The following discussion should be read in conjunction with the financial
statements contained in this Form 10-Q, as well as Management's Discussion and
Analysis of Financial Condition and Results of Operations and Risk Factors
contained in the Form 10-K. We intend for this discussion to provide the reader
with information that will assist in understanding our financial statements, the
changes in certain key items in those financial statements, and the primary
factors that accounted for those changes, as well as how certain accounting
principles affect our financial statements. The discussion also provides
information about the financial results of our business segments to provide a
better understanding of how those segments and their results affect the
financial condition and results of operations of Ameren as a whole. Also see the
Glossary of Terms and Abbreviations at the front of this report and in the Form
10-K.

Ameren, headquartered in St. Louis, Missouri, is a public utility holding company whose primary assets are its equity interests in its subsidiaries. Ameren's subsidiaries are separate, independent legal entities with separate businesses, assets, and liabilities. Dividends on


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Ameren's common stock and the payment of expenses by Ameren depend on
distributions made to it by its subsidiaries. Ameren's principal subsidiaries
are listed below. Ameren has other subsidiaries that conduct other activities,
such as providing shared services.

•Union Electric Company, doing business as Ameren Missouri, operates a
rate-regulated electric generation, transmission, and distribution business and
a rate-regulated natural gas distribution business in Missouri.
•Ameren Illinois Company, doing business as Ameren Illinois, operates
rate-regulated electric transmission, electric distribution, and natural gas
distribution businesses in Illinois.
•ATXI operates a FERC rate-regulated electric transmission business in the MISO.

Ameren's and Ameren Missouri's financial statements are prepared on a
consolidated basis and therefore include the accounts of their majority-owned
subsidiaries. All intercompany transactions have been eliminated. Ameren
Missouri's subsidiaries were created for the ownership of renewable generation
projects. Ameren Illinois has no subsidiaries. All tabular dollar amounts are in
millions, unless otherwise indicated.

In addition to presenting results of operations and earnings amounts in total,
we present certain information in cents per share. These amounts reflect factors
that directly affect Ameren's earnings. We believe this per share information
helps readers to understand the impact of these factors on Ameren's earnings per
share.

OVERVIEW

Net income attributable to Ameren common shareholders in the three months ended
September 30, 2022, was $452 million, or $1.74 per diluted share, compared with
$425 million, or $1.65 per diluted share, in the year-ago period. Net income
attributable to Ameren common shareholders in the nine months ended
September 30, 2022, was $911 million, or $3.51 per diluted share, compared with
$865 million, or $3.36 per diluted share, in the year-ago period. Net income for
the three and nine months ended September 30, 2022, was favorably affected by
increased rate base investments across all segments and a higher recognized ROE
at Ameren Illinois Electric Distribution, increased base rate revenues at Ameren
Missouri pursuant to the December 2021 MoPSC electric rate order, and increased
retail electric sales volumes at Ameren Missouri, primarily resulting from
colder winter and warmer summer temperatures experienced in 2022. Net income for
the three and nine months ended September 30, 2022, compared with the year-ago
periods, was unfavorably affected by increased other operations and maintenance
expenses not subject to formula rates, riders, or trackers, primarily due to a
reduction in the cash surrender value of COLI, an increase due to the expiration
of contracts relating to refined coal tax credits at Ameren Missouri in 2021,
and higher transmission and distribution expenses due to a change in the timing
of capitalized work, disciplined project management, and other project-related
costs. Net income comparisons in both periods were also unfavorably affected by
increased financing costs from debt issuances; a higher effective income tax
rate, primarily due to changes in the cash surrender value of COLI; and an
increase in the weighted-average basic common shares outstanding.

Ameren's strategic plan includes investing and operating its utilities in a
manner consistent with existing regulatory frameworks, enhancing those
frameworks, and advocating for responsible energy and economic policies, as well
as creating and capitalizing on opportunities for investment for the benefit of
its customers, shareholders, and the environment. Ameren remains focused on
disciplined cost management and strategic capital allocation. Ameren invested
$2.4 billion in its rate-regulated businesses in the nine months ended
September 30, 2022.

In December 2021, Ameren Missouri filed a motion with the United States District
Court for the Eastern District of Missouri to modify a September 2019 remedy
order issued by the district court to allow the retirement of the Rush Island
Energy Center in advance of its previously expected useful life in lieu of
installing a flue gas desulfurization system. The March 31, 2024 compliance date
contained in the district court's September 2019 remedy order remains in effect
unless extended by the district court. In July 2022, in response to an Ameren
Missouri request for a final, binding reliability assessment, the MISO
designated the Rush Island Energy Center as a system support resource and
concluded that certain mitigation measures, including transmission upgrades,
should occur before the energy center is retired. The transmission upgrade
projects have been approved by the MISO, and Ameren Missouri has started design
and procurement activities necessary to complete the upgrades and expects to
complete the upgrades by late 2025. In October 2022, the FERC approved a system
support resource agreement, which became effective retroactively as of September
1, 2022. The agreement details the manner of continued operation for a system
support resource that results in operating during peak demand times and
emergencies. The system support resource designation and the related agreement
are subject to annual renewal and revision. In September 2022, the Rush Island
Energy Center began operating consistent with the system support resource
agreement. In addition, in October 2022, the FERC established hearing and
settlement procedures in response to an August 2022 request from Ameren Missouri
for recovery of non-energy costs under the related MISO tariff. The FERC is
under no deadline to issue an order related to this proceeding. Revenues and
costs under the MISO tariff are expected to be included in the FAC. The district
court has the authority to determine the retirement date and operating
parameters for the Rush Island Energy Center and is not bound by the MISO
determination of the Rush Island Energy Center as a system support resource or
the FERC's approval. The district court is under no deadline to issue a ruling
modifying the remedy order. Related to this matter, in February 2022, the MoPSC
issued an order directing the MoPSC staff to review Ameren Missouri's planned
accelerated retirement of the Rush Island Energy
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Center, including potential impacts on the reliability and cost of Ameren
Missouri's service to its customers; Ameren Missouri's plans to mitigate the
customer impacts of the accelerated retirement; and the prudence of Ameren
Missouri's actions and decisions with regard to the Rush Island Energy Center,
which is expected to be addressed in the 2022 electric service regulatory rate
review, among other things. In April 2022, the MoPSC staff filed an initial
report with the MoPSC in which the staff concluded early retirement of the Rush
Island Energy Center may cause reliability concerns. The MoPSC staff is under no
deadline to complete this review. Ameren Missouri expects to seek approval from
the MoPSC to finance the costs associated with the retirement, including the
remaining unrecovered net plant balance associated with the facility, through
the issuance of securitized utility tariff bonds pursuant to the Missouri
securitization statute. See Note 9 - Commitments and Contingencies under Part I,
Item 1, of this report for additional information.

In February 2022, Ameren Missouri filed an annual update to its Smart Energy
Plan with the MoPSC, which includes a five-year capital investment overview with
a detailed one-year plan for 2022. The Smart Energy Plan is designed to upgrade
Ameren Missouri's electric infrastructure and includes investments that will
upgrade the grid and accommodate more renewable energy. Investments under the
plan are expected to total approximately $8.4 billion over the five-year period
from 2022 through 2026, with expenditures largely recoverable under the PISA and
the RESRAM.

In February 2022, Ameren Missouri, through a subsidiary, entered into a
build-transfer agreement to acquire, after construction, a 150-MW solar
generation facility, which is expected to be located in southeastern Illinois
and, if approved by the MoPSC, to serve customers under Ameren Missouri's
Renewable Solutions Program. In June 2022, Ameren Missouri, through a
subsidiary, entered into a build-transfer agreement to acquire, after
construction, a 200-MW solar generation facility, which is expected to be
located in central Missouri and support Ameren Missouri's compliance with the
state of Missouri's requirement of achieving 15% of retail sales from renewable
energy sources, of which 2% must be derived from solar energy sources. The
acquisitions are aligned with the 2022 Change to the 2020 IRP, which Ameren
Missouri filed with the MoPSC in June 2022, and are subject to certain
conditions, including the issuance of certificates of convenience and necessity
by the MoPSC, obtaining MISO transmission interconnection agreements, and
approval by the FERC. In July 2022, Ameren Missouri filed for certificates of
convenience and necessity with the MoPSC for both facilities and expects
decisions by March 2023 and April 2023 for the 200-MW facility and the 150-MW
facility, respectively. Depending on the timing of regulatory approvals and the
impact of potential sourcing issues, the projects could be completed as early as
the fourth quarter of 2024.

In June 2022, Missouri Senate Bill 745 was enacted and became effective on
August 28, 2022. The law extended Ameren Missouri's PISA election through
December 2028 and allows for an additional extension through December 2033 if
requested by Ameren Missouri and approved by the MoPSC, among other things. The
law established a 2.5% annual limit on increases to the electric service revenue
requirement used to set customer rates due to the inclusion of incremental PISA
deferrals in the revenue requirement. The limitation will be effective for
revenue requirements approved by the MoPSC after January 1, 2024, and will be
based on the revenue requirement established in the immediately preceding rate
order. The current rate limitation, which is effective through 2023, is a 2.85%
cap on the compound annual growth rate in the average overall customer rate per
kilowatthour, based on the electric rates that became effective in April 2017,
less half of the annual savings from the TCJA that was passed on to customers as
approved in a July 2018 MoPSC order. The law also established electric and
natural gas property tax trackers that allow Ameren Missouri to defer the
difference between actual property taxes incurred and related taxes included in
customer rates as a regulatory asset or regulatory liability, with the
difference expected to be reflected in rate base in a subsequent rate order.
Upon the effective date of the law, Ameren Missouri began deferring amounts
under these trackers.

In August 2022, Ameren Missouri filed a request with the MoPSC seeking approval
to increase its annual revenues for electric service by $316 million. The
electric rate increase request is based on a 10.2% ROE, a capital structure
composed of 51.9% common equity, a rate base of $11.6 billion, and a test year
ended March 31, 2022, with certain pro-forma adjustments expected through an
anticipated true-up date of December 31, 2022. The MoPSC proceeding relating to
the proposed electric service rate changes will take place over a period of up
to 11 months, with a decision by the MoPSC expected by June 2023 and new rates
effective by July 2023.

In September 2022, the ICC issued an order approving the performance metrics to
be used by Ameren Illinois in determining ROE incentives and penalties under an
MYRP. The ICC order approved total ROE incentives and penalties of 24 basis
points, allocated among seven approved performance metrics. These performance
metrics include improvements in service reliability in both the frequency and
duration of outages, a reduction in peak loads, an increased percentage of spend
with diverse suppliers, a reduction in disconnections for certain customers, and
improved timeliness in response to customer requests for interconnection of
distributed energy resources. The ROE incentives and penalties would apply
annually from 2024 through 2027 if, as planned, Ameren Illinois elects to file
an MYRP by January 20, 2023.

In April 2022, Ameren Illinois filed its annual electric distribution service
performance-based formula rate update with the ICC to be used for 2023 rates. In
July 2022, Ameren Illinois filed a revised request seeking to increase its
annual revenues for electric distribution service by $84 million. In August
2022, the ICC staff submitted its calculation of the revenue requirement
included in Ameren Illinois' update filing, recommending a $61 million increase
in Ameren Illinois' electric distribution service rates. An ICC decision in this
proceeding is required by December 2022, with new rates effective in January
2023.
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In June 2022, Ameren Illinois filed its annual electric customer
energy-efficiency formula rate update to increase its rates by $17 million with
the ICC. In August 2022, the ICC staff submitted a calculation of the revenue
requirement included in Ameren Illinois' filing, recommending a $15 million
increase in rates. An ICC decision in this proceeding is required by December
2022, with new rates effective January 2023.

In June 2022, the ICC issued an order approving Ameren Illinois' revised
energy-efficiency plan that includes annual investments in electric
energy-efficiency programs of approximately $120 million per year through 2025,
which reflects the increased level of annual investments allowed under the IETL.
The ICC has the ability to reduce the amount of electric energy-efficiency
savings goals in future program years if there are insufficient cost-effective
programs available, which could reduce the investments in electric
energy-efficiency programs. The electric energy-efficiency program investments
and the return on those investments are collected from customers through a rider
and are not recovered through the electric distribution service
performance-based formula ratemaking framework.

In 2021, the MISO issued a report outlining a preliminary long-range
transmission planning roadmap of projects through 2039, which considers the
rapidly changing generation mix within MISO resulting from significant additions
of renewable generation, actual and expected generation plant closures, and
state mandates or goals for clean energy or carbon emissions reductions. In July
2022, the MISO approved the first tranche of projects under the first phase of
the roadmap. A portion of these projects were assigned to various utilities, of
which Ameren was awarded projects that are estimated to cost approximately
$1.8 billion, based on MISO's cost estimate. The MISO is expected to initiate
requests for proposals in December 2022 and March 2023 for additional first
tranche projects crossing Missouri, which are expected to be awarded between
late-2023 and early-2024. In July 2022, a group of industrial customers filed a
complaint with the FERC, challenging provisions of a MISO tariff that exclude
regional transmission projects from the MISO's competitive bid process based on
state laws related to the right of first refusal, which provide an incumbent
utility the right to build, maintain, and own transmission lines located within
its service territory. The complaint seeks to require MISO to revise its tariff
to prohibit the application of state laws related to the right of first refusal
in the MISO's long-range transmission planning and require projects to be bid on
a competitive basis, to the maximum extent possible. It also is asking for
refunds related to any costs under the tariff that would not comply with the
sought-after revisions. The FERC is under no deadline to issue an order in this
proceeding.

The IRA was enacted in August 2022, and extends federal production and
investment tax credits for projects beginning construction through 2024 and
creates clean energy tax credits for projects placed in service after 2024,
among other things. The clean energy tax credits will support Ameren's net-zero
carbon emission goals and Ameren Missouri's 2022 Change to the 2020 IRP,
incentivize electrification, and enhance customer affordability during Ameren's
transition to clean energy. In addition, the new law imposes a 15% minimum tax
on adjusted financial statement income, as defined in the law, for corporations
whose average annual adjusted financial statement income exceeds $1 billion for
three consecutive preceding tax years effective for tax years beginning after
December 31, 2022. Once a corporation exceeds this three-year average annual
adjusted financial statement income threshold, it will be subject to the minimum
tax for all future tax years. See Note 12 - Income Taxes under Part I, Item 1,
of this report for additional information.

RESULTS OF OPERATIONS



Our results of operations and financial position are affected by many factors.
Economic conditions, energy-efficiency investments by our customers and by us,
technological advances, distributed generation, and the actions of key customers
can significantly affect the demand for our services. Ameren and Ameren Missouri
results are also affected by seasonal fluctuations in winter heating and summer
cooling demands, as well as by energy center maintenance outages. Additionally,
fluctuations in interest rates and conditions in the capital and credit markets
affect our cost of borrowing, our pension and postretirement benefits costs, the
cash surrender value of COLI, and the asset value of Ameren Missouri's nuclear
decommissioning trust fund. Almost all of Ameren's revenues are subject to state
or federal regulation. This regulation has a material impact on the rates we
charge customers for our services. Our results of operations, financial
position, and liquidity are affected by our ability to align our overall
spending, both operating and capital, with the frameworks established by our
regulators. See Note 2 - Rate and Regulatory Matters under Part I, Item 1, of
this report and Note 2 - Rate and Regulatory Matters under Part II, Item 8, of
the Form 10-K for additional information regarding Ameren Missouri's, Ameren
Illinois', and ATXI's regulatory mechanisms.

We are observing inflationary pressures on the prices of commodities, labor,
services, materials, and supplies, as well as increasing interest rates. Ameren
Missouri is also experiencing coal transportation disruptions. Ameren Missouri
and Ameren Illinois are generally allowed to pass on to customers prudently
incurred costs for fuel, purchased power, and natural gas supply. Additionally,
for certain non-commodity cost changes, the use of trackers, riders, and formula
ratemaking, as applicable, mitigates our exposure.
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Due to a change in customer behavior and certain business practices resulting
from the COVID-19 pandemic, there has been a shift in sales volumes by customer
class at both Ameren Missouri and Ameren Illinois, which began in 2020, with an
increase in residential sales, and a decrease in commercial and industrial
sales. While our electric sales volumes in the first nine months of 2022,
excluding the estimated effects of weather and customer energy-efficiency
programs, were comparable to the same period in 2021 and, at Ameren Missouri,
were comparable to pre-pandemic levels, Ameren Illinois' sales volumes remain
below pre-pandemic levels. However, revenues from Ameren Illinois' electric
distribution business, residential and small nonresidential customers of Ameren
Illinois' natural gas distribution business, and Ameren Illinois' and ATXI's
electric transmission businesses are decoupled from changes in sales volumes.
While our customers are also observing inflationary pressures, those pressures
have not significantly affected customer payments. As of September 30, 2022,
accounts receivable balances that were 30 days or greater past due or that were
a part of a deferred payment arrangement represented 17%, 12%, and 21%, or
$117 million, $39 million, and $78 million, of Ameren's, Ameren Missouri's, and
Ameren Illinois' customer trade receivables before allowance for doubtful
accounts, respectively. In comparison, as of September 30, 2021, these
percentages were 18%, 12%, and 25%, or $97 million, $33 million, and
$64 million, for Ameren, Ameren Missouri, and Ameren Illinois, respectively.
Ameren Illinois' electric distribution and natural gas distribution businesses
have bad debt riders, which provide for recovery of bad debt write-offs, net of
any subsequent recoveries. Ameren Missouri does not have a bad debt rider or
tracker, and thus its earnings are exposed to increases in bad debt expense,
absent regulatory relief.

Ameren Missouri principally uses coal and enriched uranium for fuel in its
electric operations and purchases natural gas for its customers. Ameren Illinois
purchases power and natural gas for its customers. The prices for these
commodities can fluctuate significantly because of the global economic and
political environment, weather, supply, demand, and many other factors. We have
natural gas cost recovery mechanisms for our Illinois and Missouri natural gas
distribution businesses, a purchased power cost recovery mechanism for Ameren
Illinois' electric distribution business, and a FAC for Ameren Missouri's
electric business.

We employ various risk management strategies to reduce our exposure to commodity
risk and other risks inherent in our business. The reliability of Ameren
Missouri's energy centers and our transmission and distribution systems, and the
level and timing of operations and maintenance costs and capital investment, are
key factors that we seek to manage in order to optimize our results of
operations, financial position, and liquidity.

Earnings Summary

The following table presents a summary of Ameren's earnings for the three and nine months ended September 30, 2022 and 2021:



                                                             Three Months   

Nine Months


                                                           2022        2021        2022       2021
Net income attributable to Ameren common shareholders    $   452      $ 425      $  911      $ 865
Earnings per common share - diluted                         1.74       1.65 

3.51 3.36




Net income attributable to Ameren common shareholders increased $27 million, or
9 cents per diluted share, in the three months ended September 30, 2022,
compared with the year-ago period. The increase was due to net income increases
of $22 million, $15 million, and $5 million at Ameren Missouri, Ameren Illinois
Electric Distribution, and Ameren Transmission, respectively, and a decrease in
net loss of $4 million at Ameren Illinois Natural Gas. These earnings increases
were partially offset by an increase in net loss of $19 million for activity not
reported as part of a segment, primarily at Ameren (parent).

Net income attributable to Ameren common shareholders increased $46 million, or
15 cents per diluted share, in the nine months ended September 30, 2022,
compared with the year-ago period. The increase was due to net income increases
of $28 million, $24 million, $14 million, and $7 million at Ameren Illinois
Electric Distribution, Ameren Transmission, Ameren Missouri, and Ameren Illinois
Natural Gas, respectively. These increases were partially offset by an increase
in net loss of $27 million for activity not reported as part of a segment,
primarily at Ameren (parent).
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Earnings per diluted share were favorably affected in the three and nine months ended September 30, 2022, compared to the year-ago periods (except where a specific period is referenced), by:



•increased rate base investments at Ameren Transmission and Ameren Illinois
Electric Distribution and a higher recognized ROE due to a higher estimated
annual average of the monthly yields of the 30-year United States Treasury bonds
at Ameren Illinois Electric Distribution, which increased revenues at these
segments (7 cents and 17 cents per share, respectively);
•higher base rates at Ameren Missouri pursuant to the December 2021 MoPSC
electric rate order, partially offset by the amortization of previously deferred
depreciation expense under the PISA and RESRAM, financing costs otherwise
recoverable under the PISA and RESRAM, a higher base level of expenses, and the
net recovery for amounts associated with the reduction in sales volumes
resulting from MEEIA programs (10 cents and 12 cents per share, respectively);
•increased electric retail sales at Ameren Missouri, primarily resulting from
changes in customer usage patterns in the three months ended September 30, 2022,
and colder winter temperatures and warmer summer temperatures experienced in
2022 for the nine months ended September 30, 2022 (estimated at 2 cents and
10 cents per share, respectively);
•increased base rate revenues for the inclusion of previously deferred interest
charges pursuant to the December 2021 MoPSC electric rate order, partially
offset by lower deferral of interest charges related to infrastructure
investments associated with the PISA and RESRAM (1 cent and 6 cents per share,
respectively);
•increased Ameren Illinois Natural Gas earnings from investments in qualifying
infrastructure recovered under the QIP and higher base rates for the nine months
ended September 30, 2022, pursuant to the ICC's January 2021 natural gas rate
order (1 cent and 6 cents per share, respectively);
•the absence in 2022 of the FERC's March 2021 order, primarily related to the
historical recovery of materials and supplies inventories, which decreased
Ameren Transmission revenues in 2021 (3 cents per share for the nine months
ended September 30, 2022); and
•increased other income, net, primarily due to increased non-service cost
components of net periodic benefit income not subject to formula rates or
trackers (1 cent and 2 cents per share, respectively).

Earnings per diluted share were unfavorably affected in the three and nine months ended September 30, 2022, compared to the year-ago periods, by:



•increased other operations and maintenance expenses not subject to formula
rates, riders, or trackers, primarily due to a reduction in the cash surrender
value of COLI, an increase due to the expiration of contracts relating to
refined coal tax credits at Ameren Missouri in 2021, and higher transmission and
distribution expenses due to a change in the timing of capitalized work,
disciplined project management, and other project-related costs, (4 cents and 25
cents per share, respectively);
•increased financing costs, primarily at Ameren Missouri and Ameren (parent),
largely due to higher long-term debt balances (4 cents and 10 cents per share,
respectively);
•an increase in the effective tax rate, primarily due to a change in the cash
surrender value of COLI (3 cents and 4 cents per share, respectively); and
•increased weighted-average basic common shares outstanding resulting from
issuances of common shares as detailed in Note 4 - Long-term Debt and Equity
Financings under Part I, Item 1, of this report, and Note 5 - Long Term Debt and
Equity Financings under Part II, Item 8, of the Form 10-K (1 cent and 3 cents
per share, respectively).

The cents per share variances above are presented based on the weighted-average
basic common shares outstanding in the three and nine months ended September 30,
2021, and do not reflect the impact of dilution on earnings per share, unless
otherwise noted. The amounts above other than variances related to income taxes
have been presented net of income taxes using Ameren's 2022 blended federal and
state statutory tax rate of 26%. For additional details regarding the Ameren
Companies' results of operations, including explanations of Electric and Natural
Gas Margins; Other Operations and Maintenance Expenses; Depreciation and
Amortization Expenses; Taxes Other Than Income Taxes; Other Income, Net;
Interest Charges; and Income Taxes, see the major headings below.



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Below is Ameren's table of income statement components by segment for the three
and nine months ended September 30, 2022 and 2021:

                                                               Ameren
                                                              Illinois               Ameren                                        Other /
                                          Ameren              Electric              Illinois                Ameren               Intersegment
                                         Missouri           Distribution           Natural Gas           Transmission            Eliminations           Ameren
Three Months 2022:
Electric revenues                       $  1,338          $         672          $          -          $          169          $         (39)         $ 2,140
Fuel                                        (117)                     -                     -                       -                      -             (117)
Purchased power                             (247)                  (350)                    -                       -                     34             (563)
Electric margins                             974                    322                     -                     169                     (5)           1,460
Natural gas revenues                          21                      -                   146                       -                     (1)             166
Natural gas purchased for resale              (7)                     -                   (51)                      -                      -              (58)
Natural gas margins                           14                      -                    95                       -                     (1)             108
Other operations and maintenance
expenses                                    (252)                  (145)                  (59)                    (14)                    (5)           

(475)


Depreciation and amortization expenses      (208)                   (84)                  (24)                    (31)                    (3)           

(350)


Taxes other than income taxes               (106)                   (21)                  (12)                     (3)                    (2)            (144)
Operating income (loss)                      422                     72                     -                     121                    (16)             599
Other income, net                             25                     15                     6                       5                      7               58
Interest charges                             (58)                   (19)                  (10)                    (21)                   (18)            (126)
Income (taxes) benefit                         9                    (17)                    -                     (27)                   (43)             (78)
Net income (loss)                            398                     51                    (4)                     78                    (70)             453
Noncontrolling interests - preferred
stock dividends                               (1)                     -                     -                       -                      -            

(1)


Net income (loss) attributable to
Ameren common shareholders              $    397          $          51          $         (4)         $           78          $         (70)         $   452
Three Months 2021:
Electric revenues                       $  1,113          $         428          $          -          $          160          $         (33)         $ 1,668
Fuel                                        (184)                     -                     -                       -                      -             (184)
Purchased power                              (57)                  (126)                    -                       -                     24             (159)
Electric margins                             872                    302                     -                     160                     (9)           1,325
Natural gas revenues                          16                      -                   127                       -                      -              143
Natural gas purchased for resale              (4)                     -                   (41)                      -                      -              (45)
Natural gas margins                           12                      -                    86                       -                      -               98
Other operations and maintenance
expenses                                    (240)                  (148)                  (55)                    (16)                     2            

(457)


Depreciation and amortization expenses      (161)                   (78)                  (22)                    (28)                    (1)           

(290)


Taxes other than income taxes               (104)                   (21)                  (12)                     (2)                    (3)            (142)
Operating income (loss)                      379                     55                    (3)                    114                    (11)             534
Other income, net                             27                     10                     4                       5                     10               56
Interest charges                             (32)                   (19)                  (11)                    (20)                   (12)             (94)
Income (taxes) benefit                         2                    (10)                    2                     (26)                   (38)             (70)
Net income (loss)                            376                     36                    (8)                     73                    (51)             426
Noncontrolling interests - preferred
stock dividends                               (1)                     -                     -                       -                      -            

(1)


Net income (loss) attributable to
Ameren common shareholders              $    375          $          36          $         (8)         $           73          $         (51)         $   425


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                                                               Ameren
                                                              Illinois               Ameren                                        Other /
                                          Ameren              Electric              Illinois                Ameren              Intersegment
                                         Missouri           Distribution           Natural Gas           Transmission           Eliminations           Ameren
Nine Months 2022:
Electric revenues                       $  2,966          $       1,641          $          -          $          465          $       (101)         $ 4,971
Fuel                                        (376)                     -                     -                       -                     -             (376)
Purchased power                             (458)                  (683)                    -                       -                    83           (1,058)
Electric margins                           2,132                    958                     -                     465                   (18)           3,537
Natural gas revenues                         130                      -                   811                       -                    (1)             940
Natural gas purchased for resale             (65)                     -                  (366)                      -                     -             (431)
Natural gas margins                           65                      -                   445                       -                    (1)             509
Other operations and maintenance
expenses                                    (744)                  (440)                 (185)                    (46)                  (12)          

(1,427)


Depreciation and amortization expenses      (550)                  (247)                  (72)                    (91)                   (5)            

(965)


Taxes other than income taxes               (281)                   (60)                  (59)                     (7)                   (8)            (415)
Operating income (loss)                      622                    211                   129                     321                   (44)           1,239
Other income, net                             72                     46                    16                      12                    34              180
Interest charges                            (157)                   (55)                  (32)                    (63)                  (49)            (356)
Income (taxes) benefit                        13                    (50)                  (31)                    (71)                   (9)            (148)
Net income (loss)                            550                    152                    82                     199                   (68)             915
Noncontrolling interests - preferred
stock dividends                               (3)                    (1)                    -                       -                     -             

(4)


Net income (loss) attributable to
Ameren common shareholders              $    547          $         151          $         82          $          199          $        (68)         $   911
Nine Months 2021:
Electric revenues                       $  2,543          $       1,227          $          -          $          426          $        (88)         $ 4,108
Fuel                                        (422)                     -                     -                       -                     -             (422)
Purchased power                             (195)                  (347)                    -                       -                    63             (479)
Electric margins                           1,926                    880                     -                     426                   (25)           3,207
Natural gas revenues                          99                      -                   642                       -                     -              741
Natural gas purchased for resale             (40)                     -                  (235)                      -                     -             (275)
Natural gas margins                           59                      -                   407                       -                     -              466
Other operations and maintenance
expenses                                    (683)                  (402)                 (164)                    (46)                    6           

(1,289)


Depreciation and amortization expenses      (474)                  (230)                  (66)                    (83)                   (3)            

(856)


Taxes other than income taxes               (266)                   (59)                  (52)                     (6)                   (9)            (392)
Operating income (loss)                      562                    189                   125                     291                   (31)           1,136
Other income, net                             74                     29                    10                      10                    28              151
Interest charges                            (107)                   (56)                  (31)                    (63)                  (33)            (290)
Income (taxes) benefit                         7                    (38)                  (29)                    (63)                   (5)            (128)
Net income (loss)                            536                    124                    75                     175                   (41)             869
Noncontrolling interests - preferred
stock dividends                               (3)                    (1)                    -                       -                     -             

(4)


Net income (loss) attributable to
Ameren common shareholders              $    533          $         123          $         75          $          175          $        (41)         $   865


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Below is Ameren Illinois' table of income statement components by segment for the three and nine months ended September 30, 2022 and 2021:



                                             Ameren
                                            Illinois               Ameren                  Ameren                 Other /
                                            Electric              Illinois                Illinois              Intersegment
                                          Distribution           Natural Gas            Transmission            Eliminations          Ameren Illinois
Three Months 2022:
Electric revenues                       $         672          $          -          $           117          $         (31)                     758
Purchased power                                  (350)                    -                        -                     31                     (319)
Electric margins                                  322                     -                      117                      -                      439
Natural gas revenues                                -                   146                        -                      -                      146
Natural gas purchased for resale                    -                   (51)                       -                      -                      

(51)


Natural gas margins                                 -                    95                        -                      -                       95
Other operations and maintenance
expenses                                         (145)                  (59)                     (11)                     -                     

(215)


Depreciation and amortization expenses            (84)                  (24)                     (22)                     -                     

(130)


Taxes other than income taxes                     (21)                  (12)                      (1)                     -                      (34)
Operating income (loss)                            72                     -                       83                      -                      155
Other income, net                                  15                     6                        5                      -                       26
Interest charges                                  (19)                  (10)                     (13)                     -                      (42)
Income (taxes) benefit                            (17)                    -                      (19)                     -                      (36)
Net income (loss)                                  51                    (4)                      56                      -                      103
Preferred stock dividends                           -                     -                        -                      -                        -
Net income (loss) attributable to
Ameren common shareholders              $          51          $         (4)         $            56          $           -          $           103
Three Months 2021:
Electric revenues                                 428          $          -          $           108          $         (18)                     518
Purchased power                                  (126)                    -                        -                     18                     (108)
Electric margins                                  302                     -                      108                      -                      410
Natural gas revenues                                -                   127                        -                      -                      127
Natural gas purchased for resale                    -                   (41)                       -                      -                      

(41)


Natural gas margins                                 -                    86                        -                      -                       86
Other operations and maintenance
expenses                                         (148)                  (55)                     (14)                     -                     

(217)


Depreciation and amortization expenses            (78)                  (22)                     (18)                     -                     

(118)


Taxes other than income taxes                     (21)                  (12)                      (1)                     -                      (34)
Operating income (loss)                            55                    (3)                      75                      -                      127
Other income, net                                  10                     4                        5                      -                       19
Interest charges                                  (19)                  (11)                     (11)                     -                      (41)
Income (taxes) benefit                            (10)                    2                      (18)                     -                      (26)

Net income (loss) attributable to
Ameren common shareholders              $          36          $         (8)         $            51          $           -          $            79


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                                             Ameren
                                            Illinois               Ameren                  Ameren                 Other /
                                            Electric              Illinois                Illinois              Intersegment            Ameren
                                          Distribution           Natural Gas            Transmission            Eliminations           Illinois
Nine Months 2022:
Electric revenues                       $       1,641          $          -          $           320          $         (75)         $   1,886
Purchased power                                  (683)                    -                        -                     75               (608)
Electric margins                                  958                     -                      320                      -              1,278
Natural gas revenues                                -                   811                        -                      -                811
Natural gas purchased for resale                    -                  (366)                       -                      -               (366)
Natural gas margins                                 -                   445                        -                      -                445
Other operations and maintenance
expenses                                         (440)                 (185)                     (38)                     -               (663)
Depreciation and amortization expenses           (247)                  (72)                     (63)                     -               (382)
Taxes other than income taxes                     (60)                  (59)                      (3)                     -               (122)
Operating income (loss)                           211                   129                      216                      -                556
Other income, net                                  46                    16                       13                      -                 75
Interest charges                                  (55)                  (32)                     (38)                     -               (125)
Income taxes                                      (50)                  (31)                     (49)                     -               (130)
Net income                                        152                    82                      142                      -                376
Preferred stock dividends                          (1)                    -                        -                      -                 (1)
Net income attributable to common
shareholder                             $         151          $         82          $           142          $           -          $     375
Nine Months 2021:
Electric revenues                       $       1,227          $          -          $           277          $         (49)         $   1,455
Purchased power                                  (347)                    -                        -                     49               (298)
Electric margins                                  880                     -                      277                      -              1,157
Natural gas revenues                                -                   642                        -                      -                642
Natural gas purchased for resale                    -                  (235)                       -                      -               (235)
Natural gas margins                                 -                   407                        -                      -                407
Other operations and maintenance
expenses                                         (402)                 (164)                     (38)                     -               (604)
Depreciation and amortization expenses           (230)                  (66)                     (54)                     -               (350)
Taxes other than income taxes                     (59)                  (52)                      (3)                     -               (114)
Operating income (loss)                           189                   125                      182                      -                496
Other income, net                                  29                    10                       10                      -                 49
Interest charges                                  (56)                  (31)                     (36)                     -               (123)
Income taxes                                      (38)                  (29)                     (40)                     -               (107)
Net income                                        124                    75                      116                      -                315
Preferred stock dividends                          (1)                    -                        -                      -                 (1)
Net income attributable to common
shareholder                             $         123          $         75          $           116          $           -          $     314

Electric and Natural Gas Margins



Electric margins are defined as electric revenues less fuel and purchased power
costs. Natural gas margins are defined as natural gas revenues less natural gas
purchased for resale. We consider electric and natural gas margins useful
measures to analyze the change in profitability of our electric and natural gas
operations between periods. We have included the analysis below to complement
the financial information we provide in accordance with GAAP. However, these
margins may not be a presentation defined under GAAP, and they may not be
comparable to other companies' presentations or more useful than the GAAP
information we provide elsewhere in this report.
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Electric Margins
                                                     Increase by Segment
                              Overall Ameren Increase of             Overall Ameren Increase of
     Total by Segment(a)        $135 Million (QTD YoY)                 $330 Million (YTD YoY)

[[Image Removed: aee-20220930_g4.jpg]][[Image Removed: aee-20220930_g5.jpg]][[Image Removed: aee-20220930_g6.jpg]] (a)Includes other/intersegment eliminations of $(5) million, $(9) million, $(18) million, and $(25) million in the three months ended September 30, 2022 and 2021, and nine months ended September 30, 2022 and 2021, respectively.


      Ameren Missouri         Ameren Illinois Electric Distribution              Ameren Transmission           Other/Intersegment Eliminations


Natural Gas Margins
                                                Increase (Decrease) by Segment
                                                                        Overall Ameren Increase
                                Overall Ameren Increase                   of $43 Million (YTD
                               of $10 Million (QTD YoY)                          YoY)
      Total by Segment(a)


[[Image Removed: aee-20220930_g7.jpg]][[Image Removed: aee-20220930_g8.jpg]][[Image Removed: aee-20220930_g9.jpg]]
(a)Includes $14 million and $12 million at Ameren Missouri in the three and nine
months ended September 30, 2022, respectively. Includes other/intersegment
eliminations of $(1) million and $(1) million in the three and nine months ended
September 30, 2022, respectively.

Ameren Missouri Ameren Illinois Natural Gas Other/Intersegment Eliminations


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The following tables present the favorable (unfavorable) variations by Ameren
segment for electric and natural gas margins for the three and nine months ended
September 30, 2022, compared with the year-ago periods:

                                                                           

Electric and Natural Gas Margins


                                                                Ameren Illinois
                                              Ameren               Electric             Ameren Illinois                                           Other /Intersegment
               Three Months                  Missouri            Distribution             Natural Gas             Ameren Transmission(a)             Eliminations             Ameren
Electric revenue change:
Base rates (estimate)(b)                   $       70          $           24          $             -          $                     9          $                -          $  103
Effect of weather (estimate)(c)                     2                       -                        -                                -                           -               2

Sales volumes and changes in customer
usage patterns (excluding the estimated
effects of weather and MEEIA)                       5                       -                        -                                -                           -               5

Off-system sales, capacity, and FAC
revenues, net                                     138                       -                        -                                -                           -             138
Ameren Illinois energy-efficiency program
investment revenues                                 -                       2                        -                                -                           -               2
Other                                               2                      (2)                       -                                -                           -               -
Cost recovery mechanisms - offset in fuel
and purchased power(d)                            (23)                    224                        -                                -                          (6)            195
Other cost recovery mechanisms(e)                  31                      (4)                       -                                -                           -              27
Total electric revenue change              $      225          $          244          $             -          $                     9          $               (6)         $  472
Fuel and purchased power change:
Energy costs (excluding the estimated
effect of weather)                         $     (139)         $            -          $             -          $                     -          $      

- $ (139)



Effect of higher net energy costs included
in base rates                                      (6)                      -                        -                                -                           -              (6)
Transmission services charges                       1                       -                        -                                -                           -               1
Other                                              (2)                      -                        -                                -                           4               2
Cost recovery mechanisms - offset in
electric revenue(d)                                23                    (224)                       -                                -                           6            (195)

Total fuel and purchased power change $ (123) $ (224) $

             -          $                     -          $               10          $ (337)
Net change in electric margins             $      102          $           20          $             -          $                     9          $                4          $  135
Natural gas revenue change:

Base rates (estimate)                      $        1          $            -          $             -          $                     -          $                -          $    1

QIP                                                 -                       -                        5                                -                           -               5
VBA                                                 -                       -                        4                                -                           -               4
Other                                               -                       -                       (1)                               -                          (1)             (2)
Cost recovery mechanisms - offset in
natural gas purchased for resale(d)                 3                       -                       10                                -                           -              13
Other cost recovery mechanisms(e)                   1                       -                        1                                -                           -               2
Total natural gas revenue change           $        5          $            -          $            19          $                     -          $               (1)         $   23
Natural gas purchased for resale change:

Cost recovery mechanisms - offset in
natural gas revenue(d)                     $       (3)         $            -          $           (10)         $                     -          $                -          $  (13)
Total natural gas purchased for resale
change                                     $       (3)         $            -          $           (10)         $                     -          $                -          $  (13)
Net change in natural gas margins          $        2          $            -          $             9          $                     -          $               (1)         $   10




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                                                                 Ameren Illinois           Ameren
                                               Ameren               Electric              Illinois                                           

Other /Intersegment


                Nine Months                   Missouri            Distribution           Natural Gas          Ameren Transmission(a)             Eliminations             Ameren
Electric revenue change:
Base rates (estimate)(b)                    $      146          $           71          $        -          $                    39          $                -          $  256
Effect of weather (estimate)(c)                     30                       -                   -                                -                           -              30

Sales volumes and changes in customer usage
patterns (excluding the estimated effects
of weather and MEEIA)                                9                       -                   -                                -                           -               9

Off-system sales, capacity, and FAC
revenues, net                                      192                       -                   -                                -                           -             192
Ameren Illinois energy-efficiency program
investment revenues                                  -                       8                   -                                -                           -               8
Other                                                3                       -                   -                                -                           -               3
Cost recovery mechanisms - offset in fuel
and purchased power(d)                               5                     335                   -                                -                         (13)            327
Other cost recovery mechanisms(e)                   38                       -                   -                                -                           -              38
Total electric revenue change               $      423          $          414          $        -          $                    39          $              (13)         $  863
Fuel and purchased power change:
Energy costs (excluding the estimated
effect of weather)                          $     (195)         $            -          $        -          $                     -          $                -          $ (195)
Effect of weather (estimate)(c)                     (5)                      -                   -                                -                           -              (5)
Effect of higher net energy costs included
in base rates                                       (9)                      -                   -                                -                           -              (9)

Other                                               (3)                     (1)                  -                                -                           7               3
Cost recovery mechanisms - offset in
electric revenue(d)                                 (5)                   (335)                  -                                -                          13            (327)

Total fuel and purchased power change $ (217) $ (336) $ - $

                     -          $               20          $ (533)
Net change in electric margins              $      206          $           78          $        -          $                    39          $                7          $  330
Natural gas revenue change:

Base rates (estimate)                       $        4          $            -          $        3          $                     -          $                -          $    7
Change in rate design (estimate)                     -                       -                   1                                -                           -               1
QIP                                                  -                       -                  20                                -                           -              20
VBA                                                  -                       -                   4                                -                           -               4
Other                                                -                       -                   3                                -                          (1)              2
Cost recovery mechanisms - offset in
natural gas purchased for resale(d)                 25                       -                 131                                -                           -             156
Other cost recovery mechanisms(e)                    2                       -                   7                                -                           -               9
Total natural gas revenue change            $       31          $            -          $      169          $                     -          $               (1)         $  199
Natural gas purchased for resale change:

Cost recovery mechanisms - offset in
natural gas revenue(d)                      $      (25)         $            -          $     (131)         $                     -          $                -          $ (156)
Total natural gas purchased for resale
change                                      $      (25)         $            -          $     (131)         $                     -          $                -          $ (156)
Net change in natural gas margins           $        6          $            -          $       38          $                     -          $          

(1) $ 43




(a)Includes an increase in transmission margins of $9 million and $43 million at
Ameren Illinois for the three and nine months ended September 30, 2022, compared
with the year-ago periods.
(b)For Ameren Illinois Electric Distribution and Ameren Transmission, base rates
include increases or decreases to operating revenues related to the revenue
requirement reconciliation adjustment under formula rates. For Ameren Missouri,
base rates exclude an increase for the recovery of lost electric margins
resulting from the MEEIA customer energy-efficiency programs and an increase in
base rates for RESRAM. These changes in Ameren Missouri base rates are included
in the "Sales volumes and changes in customer usage patterns (excluding the
estimated effects of weather and MEEIA)" and "Cost recovery mechanisms - offset
in fuel and purchased power" line items, respectively.
(c)Represents the estimated variation resulting primarily from changes in
cooling and heating degree-days on electric and natural gas demand compared with
the year-ago periods; this variation is based on temperature readings from the
National Oceanic and Atmospheric Administration weather stations at local
airports in our service territories.
(d)Electric and natural gas revenue changes are offset by corresponding changes
in "Fuel," "Purchased power," and "Natural gas purchased for resale" on the
statement of income, resulting in no change to electric and natural gas margins.
Activity in Other/Intersegment Eliminations represents the elimination of
related-party transactions between Ameren Missouri, Ameren Illinois, and ATXI,
as well as Ameren Transmission revenue from transmission services provided to
Ameren Illinois Electric Distribution. See Note 8 - Related-party Transactions
and Note 14 - Segment Information under Part I, Item 1, of this report for
additional information on intersegment eliminations.
(e)Offsetting expense increases or decreases are reflected in "Other operations
and maintenance," "Depreciation and amortization," or in "Taxes other than
income taxes," within the "Operating Expenses" section and "Income Taxes" in the
statement of income. These items have no overall impact on earnings.

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Ameren

Ameren's electric margins increased $135 million, or 10%, and $330 million, or
10%, for the three and nine months ended September 30, 2022, respectively,
compared with the year-ago periods, due to increased margins at Ameren Missouri,
Ameren Illinois Electric Distribution, and Ameren Transmission, as discussed
below. Ameren's natural gas margins increased $10 million, or 10%, and $43
million, or 9%, for the three and nine months ended September 30, 2022,
respectively, compared with the year-ago periods, due to increased margins at
Ameren Illinois Natural Gas and Ameren Missouri, as discussed below.

Ameren Transmission

Ameren Transmission's margins increased $9 million, or 6%, and $39 million, or
9%, for the three and nine months ended September 30, 2022, respectively,
compared with the year-ago periods. Base rate revenues were favorably affected
by increased capital investment (+$7 million and +$17 million, respectively), as
evidenced by a 10% increase in rate base used to calculate the revenue
requirement, higher recoverable expenses (+$1 million and +$12 million,
respectively), and a higher equity percentage in the capital structure at Ameren
Illinois (+$1 million and +$3 million, respectively). For the nine months ended
September 30, 2022, margins increased due to the absence in 2022 of the FERC's
March 2021 order (+$7 million). See Transmission Formula Rate Revisions in
Note 2 - Rate and Regulatory Matters under Part I, Item 1, of this report for
additional information regarding the March 2021 FERC order.

Ameren Missouri



Ameren Missouri's electric margins increased $102 million, or 12%, and $206
million, or 11%, for the three and nine months ended September 30, 2022,
respectively, compared with the year-ago periods. Revenues associated with "Cost
recovery mechanisms - offset in fuel and purchased power" decreased $23 million
and increased $5 million for the three and nine months ended September 30, 2022,
respectively, due to changes in amortization of costs previously deferred under
the FAC that were reflected in customer rates. The changes to "Cost recovery
mechanisms - offset in fuel and purchased power" are fully offset by "Cost
recovery mechanisms - offset in electric revenue," in the table above, and
result in no impact to margins. Ameren Missouri's 5% exposure to net energy cost
variances under the FAC is reflected within "Off-system sales, capacity, and FAC
revenues, net" and "Energy costs (excluding the estimated effect of weather)".

The following items had a favorable effect on Ameren Missouri's electric margins for the three and nine months ended September 30, 2022, compared with the year-ago periods (except where a specific period is referenced):



•The December 2021 MoPSC electric rate order effective February 28, 2022,
resulted in higher electric base rates, excluding the change in base rates for
the MEEIA customer energy efficiency programs and the RESRAM, partially offset
by higher net energy costs included in base rates, increased margins $64 million
and $137 million, respectively. The change in electric base rates is the sum of
the change in "Base rates (estimate)" (+$70 million and +$146 million,
respectively) and the "Effect of higher net energy costs included in base rates"
(-$6 million and -$9 million, respectively) in the table above.
•Summer temperatures were warmer as cooling degree days increased 3% for the
nine months ended September 30, 2022, and winter temperatures were colder as
heating degree days increased 1% for the three months ended March 31, 2022. The
aggregate effect of weather was comparable for the three months ended
September 30, 2022, and increased margins $25 million for the nine months ended
September 30, 2022. The change in margins due to weather is the sum of the
"Effect of weather (estimate)" on electric revenues (+$2 million and +$30
million, respectively) and the "Effect of weather (estimate)" on fuel and
purchased power (-$5 million for the nine months ended September 30, 2022) in
the table above.
•Other cost recovery mechanisms increased margins $31 million and $38 million,
respectively, due to increased RESRAM revenues (+$30 million and +$43 million,
respectively) primarily resulting from higher sales from electric generation
included in the RESRAM and lower deferral of revenues due to inclusion of
production tax credits in base rates pursuant to the December 2021 electric rate
order, increased excise taxes (+$1 million and +$7 million, respectively), and a
decrease in recoverable MEEIA program costs (-$12 million for the nine months
ended September 30, 2022).
•Excluding the estimated effects of weather and the MEEIA customer
energy-efficiency programs, electric revenues increased an estimated $5 million
and $9 million, respectively. The increase was primarily due to an increase in
retail sales volumes and an increase in the average retail price per
kilowatthour due to changes in customer usage patterns.

Ameren Missouri's electric margins were comparable for the three months ended
September 30, 2022, with a decrease of $1 million, and decreased $3 million for
the nine months ended September 30, 2022, due to its 5% exposure to net energy
cost variances under the FAC. The change in net energy costs is the sum of
"Off-system sales, capacity and FAC revenues, net" (+$138 million and +$192
million, respectively) and "Energy costs (excluding the estimated effect of
weather)" (-$139 million and -$195 million, respectively) in the table above.
Net energy costs were higher than those reflected in base rates, primarily
because of higher purchased power costs due to higher energy prices in the three
and nine months ended September 30, 2022. In the three and nine months ended
September 30, 2022, capacity revenues and costs increased as the capacity price
set by the annual MISO auction in 2022 increased from $5 per MW-day to $237 per
MW-day. The April 2021 MISO auction pricing was effective from June 2021 through
May 2022, while the April 2022 MISO auction pricing established the annual rate
beginning in June 2022. For the three and nine months ended September 30, 2022,
increased capacity revenues of $158 million
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and $210 million, respectively, are reflected in "Off-system sales, capacity and
FAC revenues, net" and increased capacity costs of $152 million and $202
million, respectively, are reflected in "Energy costs (excluding the estimated
effect of weather)" in the table above. See Outlook for additional information
related to the April 2022 MISO auction.

Ameren Missouri's natural gas margins were comparable for the three months ended
September 30, 2022, and increased $6 million, or 10%, for the nine months ended
September 30, 2022, compared with the year-ago periods. Margins increased for
the nine months ended September 30, 2022, due to increased base rates as a
result of the December 2021 MoPSC natural gas rate order effective February 28,
2022. Purchased gas costs increased $25 million for the nine months ended
September 30, 2022 due to 2022 amortization of natural gas costs previously
deferred under the PGA, driven by a significant increase in cost and customer
demand as result of the extremely cold weather in mid-February 2021. The
increased purchased natural gas costs are fully offset by an increase in natural
gas revenues under the PGA, resulting in no impact to margin. The increase in
purchased natural gas cost is reflected in "Cost recovery mechanisms - offset in
natural gas revenue" and the associated recoverability from customers is
reflected in "Cost recovery mechanisms - offset in natural gas purchased for
resale" in the table above.

Ameren Illinois

Ameren Illinois' electric margins increased $29 million, or 7%, and $121
million, or 10%, for the three and nine months ended September 30, 2022,
respectively, compared with the year-ago periods, driven by increased margins at
Ameren Illinois Electric Distribution and Ameren Illinois Transmission. Ameren
Illinois Natural Gas' margins increased $9 million, or 10%, and $38 million, or
9%, for the three and nine months ended September 30, 2022, respectively,
compared with the year-ago periods.

Ameren Illinois Electric Distribution

Ameren Illinois Electric Distribution's margins increased $20 million, or 7%,
and $78 million, or 9%, for the three and nine months ended September 30, 2022,
respectively, compared with the year-ago periods. Purchased power costs
increased $224 million and $335 million for the three and nine months ended
September 30, 2022, respectively. Purchased power costs were higher primarily
due to increased energy prices (+$107 million and +$181 million, respectively)
largely reflecting the results of IPA procurement events, and increased capacity
prices (+$39 million and +$50 million, respectively). In the three and nine
months ended September 30, 2022, capacity revenues and costs increased as the
capacity price set by the annual MISO auction in 2022 increased from $5 per
MW-day to $237 per MW-day. The April 2021 MISO auction pricing was effective
from June 2021 through May 2022, while the April 2022 MISO auction pricing
established the annual rate beginning in June 2022. See Outlook for additional
information related to the April 2022 MISO auction. In addition to increased
energy and capacity prices, higher volumes increased purchased power costs (+$65
million and +$79 million, respectively), primarily due to residential and small
commercial customer switching from alternative retail electric suppliers to
Ameren Illinois' supplied power. The increased purchased power costs are fully
offset by an increase in electric revenues under the cost recovery mechanisms
for purchased power, resulting in no impact to margin. The increase in purchased
power cost is reflected in "Cost recovery mechanisms - offset in electric
revenue" and the associated recoverability from customers is reflected in "Cost
recovery mechanisms - offset in fuel and purchased power" in the table above.

The following items had a favorable effect on Ameren Illinois Electric Distribution's margins for the three and nine months ended September 30, 2022, compared with the year-ago periods (except where a specific period is referenced):



•Base rates increased due to a higher recognized ROE (+$6 million and +$14
million, respectively), as evidenced by an increase of 97 basis points in the
estimated annual average of the monthly yields of the 30-year United States
Treasury bonds, increased capital investment (+$3 million and +$7 million,
respectively), as evidenced by a 7% increase in rate base used to calculate the
revenue requirement, and higher recoverable non-purchased power expenses (+$20
million and +$59 million, respectively), partially offset by the absence in 2022
of revenue requirement reconciliation adjustment true-ups (-$5 million and -$9
million, respectively) recorded in the first and third quarters of 2021. The sum
of these changes collectively increased margins $24 million and $71 million,
respectively.
•Revenues increased $8 million for the nine months ended September 30, 2022, due
to the recovery of and return on increased energy-efficiency program investments
under performance-based formula ratemaking.

For the three months ended September 30, 2022, Ameren Illinois' other cost recovery mechanisms decreased margins $4 million, primarily due to environmental remediation revenues.

Ameren Illinois Natural Gas

Ameren Illinois Natural Gas' margins increased $9 million, or 10%, and $38
million, or 9%, for the three and nine months ended September 30, 2022,
respectively, compared with the year-ago periods. Purchased gas costs increased
$10 million and $131 million for the three and nine months ended September 30,
2022, respectively, due to 2022 amortization of natural gas costs previously
deferred under the PGA, driven by a significant increase in cost and customer
demand as a result of the extremely cold weather in mid-February 2021. The
increased purchased natural gas costs are fully offset by an increase in natural
gas revenues under the PGA, resulting in no impact to
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margin. The increase in purchased natural gas cost is reflected in "Cost recovery mechanisms - offset in natural gas revenue" and the associated recoverability from customers is reflected in "Cost recovery mechanisms - offset in natural gas purchased for resale" in the table above.

The following items had a favorable effect on Ameren Illinois Natural Gas' margins for the three and nine months ended September 30, 2022 (except where a specific period is referenced):



•Revenues increased $5 million and $20 million, respectively, due to additional
investment in natural gas infrastructure under the QIP.
•Other cost recovery mechanisms increased revenues $7 million for the nine
months ended September 30, 2022, primarily due to increased revenues for excise
taxes.
•Revenues increased $4 million for the three and nine months ended September 30,
2022, related to a change in the timing of revenues recognized under the VBA due
to changes associated with the customer usage pattern between periods. The
change in timing of revenues is not expected to materially impact full-year
results.
•Revenues increased $3 million in January 2022 due to higher base rates as a
result of the January 2021 natural gas rate order.

Ameren Illinois Transmission



Ameren Illinois Transmission's margins increased $9 million, or 8%, and $43
million, or 16%, for the three and nine months ended September 30, 2022,
respectively, compared with the year-ago periods. Base rate revenues were
favorably affected by increased capital investment (+$7 million and +$18
million, respectively), as evidenced by a 16% increase in rate base used to
calculate the revenue requirement, higher recoverable expenses (+$1 million and
+$15 million, respectively), and a higher equity percentage in the capital
structure (+$1 million and +$3 million, respectively). For the nine months ended
September 30, 2022, margins increased due to the absence in 2022 of the FERC's
March 2021 order (+$7 million). See Transmission Formula Rate Revisions in
Note 2 - Rate and Regulatory Matters under Part I, Item 1, of this report for
additional information regarding the March 2021 FERC order.
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Other Operations and Maintenance Expenses



                                                Increase (Decrease) by Segment
                                   Overall Ameren
                                  Increase of $18                    Overall Ameren Increase of
      Total by Segment(a)        Million (QTD YoY)                     $138 Million (YTD YoY)



[[Image Removed: aee-20220930_g10.jpg]][[Image Removed: aee-20220930_g11.jpg]][[Image Removed: aee-20220930_g12.jpg]]
(a)Includes $14 million and $16 million at Ameren Transmission in the three
months ended September 30, 2022 and 2021, respectively. Also includes
other/intersegment eliminations of $5 million, $(2) million, $12 million, and
$(6) million in the three months ended September 30, 2022 and 2021, and in the
nine months ended September 30, 2022 and 2021, respectively.

Ameren Missouri Ameren Illinois Natural Gas Other/Intersegment Eliminations

Ameren Illinois
       Electric                Ameren Transmission
       Distribution


Ameren

Other operations and maintenance expenses increased $18 million and $138 million
in the three and nine months ended September 30, 2022, compared with the
year-ago periods. In addition to changes by segments discussed below, other
operations and maintenance expenses increased $7 million and $18 million in the
three and nine months ended September 30, 2022 for activity not reported as part
of a segment, as reflected in "Other/Intersegment Eliminations" above, primarily
because of an increase in the elimination of the non-service cost component of
net periodic benefit income at Ameren Services. The non-service cost component
of net periodic benefit cost or income at Ameren Services is allocated to the
segments and primarily included in the segments' other operations and
maintenance expenses.

Ameren Transmission

Other operations and maintenance expenses were comparable between periods.

Ameren Missouri



Other operations and maintenance expenses increased $12 million and $61 million
in the three and nine months ended September 30, 2022, compared with the
year-ago periods. The following items increased other operations and maintenance
expenses in the three and nine months ended September 30, 2022, compared with
the year-ago periods (except where a specific period is referenced):

•The cash surrender value of COLI decreased $4 million and $22 million,
respectively, primarily because of unfavorable market returns in 2022. In the
three and nine months ended September 30, 2022, the effect of changes in the
cash surrender value of COLI were losses of $5 million and $18 million,
respectively, compared with a loss of $1 million and a gain of $4 million in the
year-ago periods, respectively.
•Labor and benefit costs increased $12 million and $18 million, respectively,
largely because of a higher base level of pension service costs reflected in
electric service rates pursuant to the December 2021 MoPSC rate order.
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•The absence in 2022 of $6 million and $18 million, respectively, in service
fees received under refined coal production agreements, as the result of the
expiration of refined coal tax credits at the end of 2021, which impact was
reflected in electric services rates pursuant to the December 2021 MoPSC rate
order.
•Transmission and distribution expenditures, excluding storm costs, increased $3
million and $8 million, respectively, primarily because of disciplined project
management and other project-related costs.
•The absence of a $5 million deferral to a regulatory asset of certain costs
previously incurred related to the COVID-19 pandemic, pursuant to the March 2021
MoPSC orders, which decreased other operations and maintenance expenses in the
nine months ended September 30, 2021.
•Energy center operating costs increased $4 million in the nine months ended
September 30, 2022, primarily because of costs related to new wind generation
facilities, which are recovered under the RESRAM.
•Customer billing costs increased $3 million in the nine months ended
September 30, 2022, primarily because credit card fees charged to customers were
discontinued in March 2022 pursuant to the December 2021 MoPSC rate order, which
incorporated an amount of such fees in electric service rates.

The above increases in the three and nine months ended September 30, 2022, compared with the year-ago periods, were partially offset by the below items (except where a specific period is referenced):

•MEEIA customer energy-efficiency program spend decreased $12 million in the nine months ended September 30, 2022, as approved by the MoPSC. •Energy center maintenance costs decreased $5 million and $9 million, respectively, primarily because of the absence in 2022 of energy center maintenance outages, as well as reduced maintenance expenditures related to reduced operations at the Meramec and Rush Island energy centers. •Storm costs decreased $5 million and $3 million, respectively.

Ameren Illinois



Other operations and maintenance expenses were comparable at Ameren Illinois
between the three months ended September 30, 2022 and 2021. Other operations and
maintenance expenses increased $59 million in the nine months ended
September 30, 2022, compared with the year-ago period, as discussed below. Other
operations and maintenance expenses decreased $3 million at Ameren Illinois
Transmission in the three months ended September 30, 2022, compared with the
year-ago period, primarily because of insignificant decreases in various
expenses. Other operations and maintenance expenses were comparable at Ameren
Illinois Transmission in the nine months ended September 30, 2022 and 2021.

Ameren Illinois Electric Distribution



Other operations and maintenance expenses decreased $3 million in the three
months ended September 30, 2022, compared with the year-ago period, primarily
because of power restoration assistance provided to other utilities in the
year-ago period. Other operations and maintenance expenses increased $38 million
in the nine months ended September 30, 2022, compared with the year-ago period
primarily because of the following items:

•Distribution system expenditures increased $15 million, primarily because of
projects deferred in 2021 as a result of storm restoration efforts for which the
associated costs were deferred as a regulatory asset in 2021.
•The cash surrender value of COLI decreased $10 million, primarily because of
unfavorable market returns in 2022, compared with favorable market returns in
2021.
•Increased bad debt expense of $8 million, primarily because of increased
recovery of bad debt costs allowed by the ICC.
•Amortization of regulatory assets associated with customer energy-efficiency
program investments under formula ratemaking increased $6 million.
•Injuries and damages increased $3 million, primarily because of an increase in
claims compared with the year-ago period.

The above increases were partially offset by a $4 million decrease in environmental remediation rider costs, which resulted from a decline in required remediation efforts.


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Ameren Illinois Natural Gas



Other operations and maintenance expenses increased $4 million in the three
months ended September 30, 2022, compared with the year-ago period, primarily
because of insignificant increases in various expenses. Other operations and
maintenance expenses increased $21 million in the nine months ended
September 30, 2022, compared with the year-ago period, primarily because of a $9
million increase in distribution system expenditures primarily related to a
change in the timing of capitalized work related to property, plant, and
equipment and operations and maintenance activity. Other operations and
maintenance expenses also increased $5 million because of a decrease in the cash
surrender value of COLI related to unfavorable market returns in 2022, compared
with favorable market returns in 2021, and $3 million related to higher labor
and benefits costs. In the nine months ended September 30, 2022, the effect of
COLI was a loss of $4 million, compared with a gain of $1 million in the
year-ago period.

Depreciation and Amortization Expenses



                                                       Increase by Segment
                                 Overall Ameren Increase
                                   of $60 Million (QTD               Overall Ameren Increase of
    Total by Segment(a),(b)               YoY)                         $109 Million (YTD YoY)



[[Image Removed: aee-20220930_g13.jpg]][[Image Removed: aee-20220930_g14.jpg]][[Image Removed: aee-20220930_g15.jpg]]
(a)Includes $31 million and $28 million at Ameren Transmission in the three
months ended September 30, 2022 and 2021, respectively. Also includes
other/intersegment eliminations of $3 million, $1 million, $5 million, and $3
million in the three months ended September 30, 2022 and 2021, and in the nine
months ended September 30, 2022 and 2021, respectively.
(b)Ameren and Ameren Missouri include PISA and RESRAM deferrals of $9 million,
$27 million, $35 million, and $68 million in the three months ended
September 30, 2022 and 2021, and in the nine months ended September 30, 2022 and
2021, respectively.

Ameren Missouri Ameren Illinois Natural Gas Other/Intersegment Eliminations

Ameren Illinois
       Electric                Ameren Transmission
       Distribution


Depreciation and amortization expenses increased $60 million, $47 million, and
$12 million in the three months ended September 30, 2022, and $109 million, $76
million, and $32 million in the nine months ended September 30, 2022, compared
with the year-ago periods, at Ameren, Ameren Missouri, and Ameren Illinois,
respectively, primarily because of additional property, plant, and equipment
investments across their respective segments. Ameren's and Ameren Missouri's
depreciation and amortization expenses for the three and nine months ended
September 30, 2022, compared with the year-ago periods, were affected by the
following, which include the effect of the additional investments:

•Depreciation and amortization rate changes pursuant to the December 2021 MoPSC
electric rate order, which increased depreciation and amortization expenses by
$17 million and $40 million, respectively.
•Increased depreciation and amortization expenses of $17 million and $40
million, respectively, for amounts previously deferred under the PISA and RESRAM
and subsequently reflected in base rates pursuant to the December 2021 MoPSC
electric rate order, largely due to investments in wind generation.
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•Fewer deferrals of depreciation and amortization expenses of $18 million and
$33 million, respectively, due to less property, plant, and equipment eligible
for recovery under the PISA and RESRAM as a result of the December 2021 MoPSC
electric rate order.
•The net over-recovery of RESRAM eligible expenses increased depreciation and
amortization expenses by $13 million in the three months ended September 30,
2022,compared with the year-ago period.
•The net deferral related to the Meramec Energy Center retirement, which
decreased depreciation and amortization expenses by $15 million and $35 million,
respectively, pursuant to the December 2021 MoPSC electric rate order, which
established a five-year recovery period for certain Meramec Energy Center costs.

Taxes Other Than Income Taxes
                                                Increase (Decrease) by Segment
                                                                        Overall Ameren Increase
                                Overall Ameren Increase                   of $23 Million (YTD
      Total by Segment(a)       of $2 Million (QTD YoY)                          YoY)



                    [[Image Removed: aee-20220930_g16.jpg]]
 [[Image Removed: aee-20220930_g17.jpg]][[Image Removed: aee-20220930_g18.jpg]]
(a)Includes $3 million, $2 million, $7 million, and $6 million at Ameren
Transmission in the three months ended September 30, 2022 and 2021, and in the
nine months ended September 30, 2022 and 2021, respectively. Also includes
other/intersegment eliminations of $2 million, $3 million, $8 million, and
$9 million in the three months ended September 30, 2022 and 2021, and in the
nine months ended September 30, 2022 and 2021, respectively.

Ameren Missouri Ameren Illinois Natural Gas Other/Intersegment Eliminations

Ameren Illinois
       Electric                Ameren Transmission
       Distribution


Taxes other than income taxes were comparable at Ameren between the three months
ended September 30, 2022 and 2021. Taxes other than income taxes increased $23
million in the nine months ended September 30, 2022, compared with the year-ago
period, primarily because of $8 million and $7 million increases in excise taxes
at Ameren Missouri and Ameren Illinois Natural Gas, respectively, mostly due to
higher base rates at Ameren Missouri, pursuant to the December 2021 MoPSC
electric rate order, and increased sales at both segments. Taxes other than
income taxes also increased $6 million in the nine months ended September 30,
2022, compared with the year-ago period, at Ameren Missouri because of increased
property taxes, primarily resulting from higher assessed values and lower
property tax refunds.
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Other Income, Net
                                                Increase (Decrease) by Segment
                                                                        Overall Ameren Increase
                                Overall Ameren Increase                   of $29 Million (YTD
      Total by Segment(a)       of $2 Million (QTD YoY)                          YoY)


[[Image Removed: aee-20220930_g19.jpg]][[Image Removed: aee-20220930_g20.jpg]][[Image Removed: aee-20220930_g21.jpg]] (a)Includes $5 million and $5 million at Ameren Transmission in the three months ended September 30, 2022 and 2021, respectively.

Ameren Missouri Ameren Illinois Natural Gas Other/Intersegment Eliminations

Ameren Illinois
       Electric                Ameren Transmission
       Distribution


Other income, net, was comparable at Ameren between the three months ended
September 30, 2022 and 2021, primarily because a $4 million increase in the
non-service cost component of net periodic benefit income at Ameren Illinois
Electric Distribution, which was partially offset by decreased income from
equity method investments for activity not reported as part of a segment. Other
Income, net, increased $29 million in the nine months ended September 30, 2022,
compared with the year-ago period, primarily because of increases in the
non-service cost component of net periodic benefit income of $14 million, $14
million, and $6 million for Ameren Illinois Electric Distribution, activity not
reported as part of a segment, and Ameren Illinois Natural Gas, respectively.
These increases in other income, net, were partially offset by a $7 million
decrease in income from equity method investments for activity not reported as
part of a segment.

See Note 5 - Other Income, Net, under Part I, Item 1, of this report for
additional information. See Note 11 - Retirement Benefits under Part I, Item 1,
of this report for more information on the non-service cost components of net
periodic benefit income.
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Interest Charges
                                                 Increase (Decrease) by Segment
                                      Overall Ameren                    Overall Ameren Increase
                                     Increase of $32                      of $66 Million (YTD
      Total by Segment(a)(b)        Million (QTD YoY)                            YoY)



[[Image Removed: aee-20220930_g22.jpg]][[Image Removed: aee-20220930_g23.jpg]][[Image Removed: aee-20220930_g24.jpg]]
(a)Includes $19 million and $19 million at Ameren Illinois Electric Distribution
in the three months ended September 30, 2022 and 2021, respectively. Also
includes $10 million and $11 million at Ameren Illinois Natural Gas in the three
months ended September 30, 2022 and 2021, respectively.
(b)Ameren and Ameren Missouri include PISA and RESRAM deferrals of $4 million,
$23 million, $25 million, and $56 million in the three months ended
September 30, 2022 and 2021, and in the nine months ended September 30, 2022 and
2021, respectively.

Ameren Missouri Ameren Illinois Natural Gas Other/Intersegment Eliminations

Ameren Illinois
       Electric                Ameren Transmission
       Distribution


Interest charges increased $32 million and $66 million in the three and nine
months ended September 30, 2022, compared with the year-ago periods. The
following items increased interest charges in the three and nine months ended
September 30, 2022, compared with the year-ago periods:

•Interest charges at Ameren and Ameren Missouri reflected a deferral to a
regulatory asset of interest charges pursuant to PISA and RESRAM. The amount of
interest charges included in base rates for PISA and RESRAM deferrals was
updated when new customer rates became effective on February 28, 2022, pursuant
to the December 2021 MoPSC electric rate order, which incorporated deferrals
through September 30, 2021. Lower deferrals, due to the inclusion in base rates
of interest associated with certain property, plant, and equipment previously
deferred under the PISA and RESRAM, increased interest charges by $18 million
and $29 million, respectively.
•Issuances of long-term debt at Ameren Missouri in June 2021 and April 2022
collectively increased interest charges by $5 million and $15 million,
respectively.
•Issuances of long-term debt at Ameren (parent) in March and November 2021
collectively increased interest charges by $3 million and $9 million,
respectively.
•Interest charges at Ameren (parent) increased $3 million and $5 million,
respectively, because of higher interest rates on an increased level of
short-term borrowings.

See Note 3 - Short-term Debt and Liquidity under Part I, Item 1, of this report
and the Long-term Debt and Equity section below for additional information on
short-term borrowings and long-term debt, respectively.
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Income Taxes

The following table presents effective income tax rates for the three and nine months ended September 30, 2022 and 2021:



                                                  Three Months(a)               Nine Months(a)
                                                   2022           2021          2022           2021
Ameren                                                  15  %     14  %              14  %     13  %
Ameren Missouri                                         (2) %     (1) %              (2) %     (1) %
Ameren Illinois                                         26  %     25  %              26  %     25  %
Ameren Illinois Electric Distribution                   25  %     24  %              25  %     24  %
Ameren Illinois Natural Gas                             20  %     21  %              27  %     28  %
Ameren Illinois Transmission                            26  %     26  %              26  %     26  %
Ameren Transmission                                     25  %     26  %              26  %     26  %


(a)Estimate of the annual effective income tax rate adjusted to reflect the tax
effect of items discrete to the three and nine months ended September 30, 2022
and 2021.

See Note 12 - Income Taxes under Part I, Item 1, of this report for a reconciliation of the federal statutory corporate income tax rate to the effective income tax rate for the Ameren Companies.

LIQUIDITY AND CAPITAL RESOURCES



Collections from our tariff-based revenues are our principal source of cash
provided by operating activities. A diversified retail customer mix, primarily
consisting of rate-regulated residential, commercial, and industrial customers,
provides us with a reasonably predictable source of cash. In addition to using
cash provided by operating activities, we use available cash, drawings under
committed credit agreements, commercial paper issuances, and/or, in the case of
Ameren Missouri and Ameren Illinois, short-term affiliate borrowings to support
normal operations and temporary capital requirements. We may reduce our
short-term borrowings with cash provided by operations or, at our discretion,
with long-term borrowings, or, in the case of Ameren Missouri and Ameren
Illinois, with capital contributions from Ameren (parent). As of September 30,
2022, there have been no material changes other than in the ordinary course of
business related to cash requirements arising from these long-term commitments
provided in Item 7 of the Form 10-K for the year ended December 31, 2021. In
April, May, and September 2022, Ameren Illinois conducted procurement events,
administered by the IPA, to purchase energy products and acquire capacity
through May 2025. As a result, Ameren and Ameren Illinois' estimated minimum
purchase obligations for purchased power increased by $0.6 billion in total over
the period of October 2022 through May 2025.

We expect to make significant capital expenditures over the next five years,
supported by a combination of long-term debt and equity, as we invest in our
electric and natural gas utility infrastructure to support overall system
reliability, grid modernization, renewable energy target requirements,
environmental compliance, and other improvements. For additional information
about our long-term debt outstanding, including maturities due within one year,
and the applicable interest rates, see Note 5 - Long-term Debt and Equity
Financings under Part II, Item 8 of the Form 10-K and Note 4 - Long-term Debt
and Equity Financings under Part I, Item 1, of this report. As part of its
funding plan for capital expenditures, Ameren is using newly issued shares of
common stock, rather than market-purchased shares, to satisfy requirements under
the DRPlus and employee benefit plans and expects to continue to do so through
at least 2026. Ameren expects these issuances to provide equity of about
$100 million annually. In addition, in 2021, Ameren established an ATM program
under which Ameren may offer and sell from time to time up to $750 million of
its common stock, which includes the ability to enter into forward sales
agreements, subject to market conditions and other factors. In the fourth
quarter of 2022, Ameren expects to increase the amount available under the ATM
program by approximately $1 billion for equity needs in 2024 and beyond. There
were no shares issued under the ATM program for the three and nine months ended
September 30, 2022. Ameren has entered into multiple forward sale agreements
under the ATM program with various counterparties relating to 6.6 million shares
of common stock. As of September 30, 2022, Ameren could have settled the forward
sale agreements with physical delivery of 6.6 million shares of common stock to
the respective counterparties in exchange for cash of $587 million. As of
September 30, 2022, Ameren had substantially utilized the available capacity
under the ATM program, which takes into account the forward sale agreements.
Ameren expects to settle approximately $300 million of the forward sale
agreements and issue 3.4 million shares of common stock by December 31, 2022. In
addition, Ameren expects to settle approximately $300 million of the forward
sale agreements and issue 3.2 million shares of common stock by December 31,
2023. Ameren plans to issue approximately $300 million of equity each year from
2022 to 2026 in addition to issuances under the DRPlus and employee benefit
plans. Ameren expects its equity to total capitalization ratio to be
approximately 45% through December 31, 2026, with the long-term intent to
support solid investment-grade credit ratings. See Long-term Debt and Equity
below and Note 4 - Long-term Debt and Equity Financings under Part I, Item 1, of
this report for additional information on the ATM program, including the forward
sale agreements under the ATM program relating to common stock.

The use of cash provided by operating activities and short-term borrowings to
fund capital expenditures and other long-term investments at the Ameren
Companies frequently results in a working capital deficit, defined as current
liabilities exceeding current assets, as was the case at September 30, 2022, for
Ameren and Ameren Illinois. With the credit capacity available under the Credit
Agreements, and cash and cash equivalents, Ameren (parent), Ameren Missouri, and
Ameren Illinois, collectively, had net available liquidity of $1.1 billion at
September 30, 2022. See Credit Facility Borrowings and Liquidity for additional
information.
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The following table presents net cash provided by (used in) operating,
investing, and financing activities for the nine months ended September 30, 2022
and 2021:

                                       Net Cash Provided By                                     Net Cash Used In                                    Net Cash Provided By
                                       Operating Activities                                   Investing Activities                                 

Financing Activities


                             2022              2021            Variance            2022              2021             Variance            2022             2021            Variance
Ameren                    $  1,599          $ 1,192          $     407          $ (2,458)         $ (2,646)         $     188          $   884          $ 1,298          $    (414)

Ameren Missouri                726              645                 81            (1,255)           (1,478)               223              528              699               (171)
Ameren Illinois                835              507                328            (1,145)           (1,074)               (71)             343              542               (199)

Cash Flows from Operating Activities



Our cash provided by operating activities is affected by fluctuations of trade
accounts receivable, inventories, and accounts and wages payable, among other
things, as well as the unique regulatory environment for each of our businesses.
Substantially all expenditures related to fuel, purchased power, and natural gas
purchased for resale are recovered from customers through rate adjustment
mechanisms, which may be adjusted without a traditional rate proceeding. Similar
regulatory mechanisms exist for certain other operating expenses that can also
affect the timing of cash provided by operating activities. The timing of cash
payments for costs recoverable under our regulatory mechanisms differs from the
recovery period of those costs. Additionally, the seasonality of our electric
and natural gas businesses, primarily caused by seasonal customer rates and
changes in customer demand due to weather, such as increased demand resulting
from the extremely cold weather in mid-February 2021 discussed below,
significantly affects the amount and timing of our cash provided by operating
activities.

As a result of the significant increase in customer demand and prices for
natural gas and electricity experienced in mid-February 2021 due to extremely
cold weather, Ameren Missouri and Ameren Illinois had under-recovered costs for
the month of February 2021 under their PGA clauses and, for Ameren Missouri,
under the FAC (Ameren Missouri - PGA $53 million, FAC $50 million; Ameren
Illinois - PGA $221 million). Ameren Missouri's PGA under-recovery is being
collected from customers over 36 months beginning November 2021, pursuant to an
October 2021 MoPSC order, and the FAC under-recovery was collected over eight
months beginning October 2021. Ameren Illinois collected the PGA under-recovery
over 18 months beginning April 2021.

Ameren

Ameren's cash provided by operating activities increased $407 million in the first nine months of 2022, compared with the year-ago period. The following items contributed to the increase:



•A $561 million increase resulting from increased customer collections and
decreased expenditures under the PGA, primarily as a result of the significant
increase from customer demand and prices for natural gas experienced in
mid-February 2021 due to extremely cold weather, a net increase attributable to
other regulatory recovery mechanisms, and higher customer collections resulting
from base rate increases pursuant to Ameren Missouri's December 2021 electric
rate order.
•A $24 million decrease in coal inventory levels at Ameren Missouri, as less
coal was purchased in 2022 due to service-related delivery disruptions.
•A $23 million decrease in payments to settle ARO liabilities, primarily related
to the closure of Ameren Missouri's CCR storage facilities.
•A $21 million decrease in pension and postretirement benefit plan
contributions.
•A $12 million decrease in major storm restoration costs at Ameren Illinois,
primarily due to a January 2021 storm.

The following items partially offset the increase in Ameren's cash from operating activities between periods:



•A $51 million increase in purchases of materials and supplies inventories to
support operations in 2022 as levels were increased to mitigate against
potential supply disruptions.
•A $45 million increase in payments for nuclear refueling and maintenance
outages at Ameren Missouri's Callaway Energy Center. There was no scheduled
refueling and maintenance outage in 2021.
•A $34 million increase in payments for certain cloud computing arrangements.
•A $34 million increase in interest payments, primarily due to an increase in
the average outstanding debt.
•The absence in 2022 of $20 million in service fees received under refined coal
production agreements at Ameren Missouri, as the result of the expiration of
refined coal tax credits at the end of 2021.
•A $16 million increase in net collateral posted with counterparties, primarily
due to changes in the market prices of power, natural gas, and other fuels.
•A $15 million increase in the cost of natural gas held in storage, primarily at
Ameren Illinois, because of higher prices.
•A $13 million increase in property tax payments at Ameren Missouri, primarily
due to higher assessed property tax values.
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Ameren Missouri



Ameren Missouri's cash provided by operating activities increased $81 million in
the first nine months of 2022, compared with the year-ago period. The following
items contributed to the increase:

•A $203 million increase resulting from increased customer collections and
decreased expenditures under the PGA due to the significant increase from
customer demand and prices for natural gas experienced in mid-February 2021 due
to extremely cold weather and higher customer collections resulting from base
rate increases pursuant to the December 2021 electric rate order, partially
offset by a decrease attributable to other regulatory mechanisms.
•A $24 million decrease in coal inventory levels, as less coal was purchased in
2022 due to service-related delivery disruptions.
•A $23 million decrease in payments to settle ARO liabilities, primarily related
to the closure of CCR storage facilities.
•An $8 million decrease in pension and postretirement benefit plan
contributions.

The following items partially offset the increase in Ameren Missouri's cash from operating activities between periods:



•A $45 million increase in payments for nuclear refueling and maintenance
outages at the Callaway Energy Center. There was no scheduled refueling and
maintenance outage in 2021.
•A $35 million increase in purchases of materials and supplies inventories to
support operations in 2022 as levels were increased to mitigate against
potential supply disruptions.
•The absence in 2022 of $20 million in service fees received under refined coal
production agreements, as the result of the expiration of refined coal tax
credits at the end of 2021.
•A $15 million increase in payments for certain cloud computing arrangements.
•A $15 million increase in interest payments, primarily due to an increase in
the average outstanding debt.
•A $14 million increase in net collateral posted with counterparties, primarily
due to changes in the market prices of power, natural gas, and other fuels.
•A $13 million increase in property tax payments, primarily due to higher
assessed property tax values.

Ameren Illinois

Ameren Illinois' cash provided by operating activities increased $328 million in
the first nine months of 2022, compared with the year-ago period. The following
items contributed to the increase:

•A $355 million increase resulting from increased customer collections and
decreased expenditures under the PGA, primarily as a result of the significant
increase from customer demand and prices for natural gas experienced in
mid-February due to extremely cold weather and a net increase attributable to
other regulatory recovery mechanisms.
•A $21 million increase in income tax refunds from Ameren (parent) pursuant to
the tax allocation agreement, primarily due to lower taxable income in 2022 and
the timing of payments in 2022.
•A $12 million decrease in major storm restoration costs, primarily due to a
January 2021 storm.
•A $10 million decrease in pension and postretirement benefit plan
contributions.

The following items partially offset the increase in Ameren Illinois' cash from operating activities between periods:



•A $19 million increase in payments for certain cloud computing arrangements.
•A $16 million increase in purchases of materials and supplies inventories to
support operations in 2022 as levels were increased to mitigate against
potential supply disruptions.
•A $13 million increase in the cost of natural gas held in storage because of
higher prices.

Cash Flows from Investing Activities

Ameren's cash used in investing activities decreased $188 million during the
first nine months of 2022, compared with the year-ago period, primarily as a
result of a $176 million decrease in capital expenditures, largely resulting
from a reduction in expenditures related to wind generation assets at Ameren
Missouri, partially offset by increased expenditures for electric delivery
infrastructure upgrades at Ameren Missouri and for transmission projects at
Ameren Illinois.

Ameren Missouri's cash used in investing activities decreased $223 million
during the first nine months of 2022, compared with the year-ago period,
primarily as a result of a $330 million decrease in capital expenditures,
primarily resulting from a reduction in expenditures related to wind generation
assets and transmission projects partially offset by increased expenditures for
electric delivery infrastructure upgrades and software projects. This decrease
was partially offset by a $115 million return of net money pool advances in the
first nine months of 2021.
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Ameren Illinois' cash used in investing activities increased $71 million during
the first nine months of 2022, compared with the year-ago period, primarily as a
result of a $119 million increase in capital expenditures, largely related to
transmission projects. This increase was partially offset by a $41 million
decrease in Ameren Illinois' net money pool advances.

Cash Flows from Financing Activities



Cash provided by, or used in, financing activities is a result of our financing
needs, which depend on the level of cash provided by operating activities, the
level of cash used in investing activities, the level of dividends, and our
long-term debt maturities, among other things. Due to extremely cold winter
weather in mid-February 2021, Ameren Missouri and Ameren Illinois experienced
higher than anticipated commodity costs for natural gas purchased for resale and
purchased power, which contributed to the acceleration of the timing of certain
planned 2021 debt issuances.

Ameren's cash provided by consolidated financing activities decreased
$414 million during the first nine months of 2022, compared with the year-ago
period. During the first nine months of 2022, Ameren utilized proceeds of $1.1
billion of long-term debt to repay then-outstanding short-term debt, for
near-term capital expenditures, and to repay $450 million of maturities of
long-term debt. In addition, during the first nine months of 2022, Ameren
utilized proceeds from net commercial paper issuances of $675 million along with
cash provided by operating activities to fund, in part, capital expenditures. In
comparison, during the first nine months of 2021, Ameren utilized proceeds from
the issuance of $1.4 billion of long-term debt for general corporate purposes,
including to repay then-outstanding short-term debt, including short-term debt
incurred in connection with the increased purchases for natural gas for resale
and purchased power costs discussed above, and to fund, in part, capital
expenditures. During the first nine months of 2021, Ameren received $63 million
from net commercial paper issuances. In addition, Ameren received aggregate cash
proceeds of $297 million from the issuance of common stock under the ATM
program, the DRPlus, and the 401(k) plan and the settlement of the remaining
portion of the 2019 forward sale agreement during the first nine months of 2021.
These proceeds were used to fund a portion of Ameren Missouri's wind generation
investments and to fund, in part, other capital expenditures. During the first
nine months of 2022, Ameren paid common stock dividends of $457 million,
compared with $423 million in the year-ago period, as a result of an increase in
both the dividend rate and the number of common shares outstanding.

Ameren Missouri's cash provided by financing activities decreased $171 million
during the first nine months of 2022, compared with the year-ago period. During
the first nine months of 2022, Ameren Missouri utilized net proceeds from the
issuance of long-term debt of $524 million to repay then-outstanding short-term
debt and for near-term capital expenditures. In addition, during the first nine
months of 2022, Ameren Missouri utilized proceeds from net commercial paper
issuances of $13 million along with cash provided by operating activities to
fund, in part, capital expenditures. In comparison, during the first nine months
of 2021, Ameren Missouri utilized net proceeds from the issuance of long-term
debt of $524 million to repay then-outstanding short-term debt, including
short-term debt incurred in connection with the increased purchases for natural
gas for resale and purchased power costs discussed above. Additionally, proceeds
from the issuance of long-term debt and capital contributions of $183 million
from Ameren (parent) were used to fund a portion of wind generation investments
and to fund, in part, capital expenditures during the first nine months of 2021.

Ameren Illinois' cash provided by financing activities decreased $199 million
during the first nine months of 2022, compared with the year-ago period. During
the first nine months of 2022, Ameren Illinois utilized net proceeds from the
issuance of long-term debt of $499 million to repay $400 million of maturities
of long-term debt and to repay a portion of the then-outstanding short-term
debt. Additionally, Ameren Illinois utilized proceeds from net commercial paper
issuances of $250 million and cash provided by operating activities to fund, in
part, capital expenditures. In comparison, during the first nine months of 2021,
Ameren Illinois utilized net proceeds from the issuance of long-term debt of
$449 million to repay then-outstanding short-term debt, including short-term
debt incurred in connection with the increased purchases for natural gas for
resale and purchased power costs discussed above, and to fund, in part, capital
expenditures. Ameren Illinois also received a $145 million capital contribution
from Ameren (parent) during the first nine months of 2021. In addition, Ameren
repaid $19 million of money pool borrowings and redeemed $13 million of
preferred stock during the first nine months of 2021.

See Long-term Debt and Equity in this section for additional information on maturities and issuances of long-term debt, issuances of common stock, and redemptions of preferred stock.


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Credit Facility Borrowings and Liquidity



The following table presents Ameren's consolidated liquidity as of September 30,
2022:

                                                                                             Available at
                                                                                          September 30, 2022
Ameren (parent) and Ameren Missouri:
Missouri Credit Agreement - borrowing capacity                                           $           1,200

Less: Ameren (parent) commercial paper outstanding                                                     444
Less: Ameren Missouri commercial paper outstanding                                                     178

Less: Ameren Missouri letters of credit                                                                  2
Missouri Credit Agreement - subtotal                                                                   576
Ameren (parent) and Ameren Illinois:
Illinois Credit Agreement - borrowing capacity                                                       1,100

Less: Ameren (parent) commercial paper outstanding                                                     246
Less: Ameren Illinois commercial paper outstanding                                                     353

Illinois Credit Agreement - subtotal                                                                   501
Subtotal                                                                                 $           1,077
Add: Cash and cash equivalents                                                                           7
Net Available Liquidity(a)                                                               $           1,084


(a)Does not include Ameren's forward equity sale agreements. See Note 4 - Long-term Debt and Equity Financings under Part I, Item 1, of this report for additional information.



The Credit Agreements, among other things, provide $2.3 billion of credit until
maturity in December 2025. See Note 3 - Short-term Debt and Liquidity under
Part I, Item 1, of this report for additional information on the Credit
Agreements. During the nine months ended September 30, 2022, Ameren (parent),
Ameren Missouri, and Ameren Illinois each issued commercial paper. Borrowings
under the Credit Agreements and commercial paper issuances are based upon
available interest rates at the time of the borrowing or issuance.

Ameren has a money pool agreement with and among its utility subsidiaries to
coordinate and to provide for certain short-term cash and working capital
requirements. As short-term capital needs arise, and based on availability of
funding sources, Ameren Missouri and Ameren Illinois will access funds from the
utility money pool, the Credit Agreements, or the commercial paper programs
depending on which option has the lowest interest rates.

See Note 3 - Short-term Debt and Liquidity under Part I, Item 1, of this report
for additional information on credit agreements, commercial paper issuances,
Ameren's money pool arrangements and related borrowings, and relevant interest
rates.

The issuance of short-term debt securities by Ameren's utility subsidiaries is
subject to FERC approval under the Federal Power Act. In March 2022, the FERC
issued an order authorizing Ameren Missouri to issue up to $1 billion of
short-term debt securities through March 2024. In August 2022, the FERC issued
an order authorizing Ameren Illinois to issue up to $1 billion of short-term
debt securities through September 2024. In 2021, the FERC issued an order
authorizing ATXI to issue up to $300 million of short-term debt securities
through July 2023.

The Ameren Companies continually evaluate the adequacy and appropriateness of
their liquidity arrangements for changing business conditions. When business
conditions warrant, changes may be made to existing credit agreements or to
other borrowing arrangements, or other arrangements may be made.
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Long-term Debt and Equity



The following table presents issuances (net of any issuance premiums or
discounts) of long-term debt and equity, as well as maturities of long-term debt
and redemptions of preferred stock for the nine months ended September 30, 2022
and 2021:

                                                     Month Issued,
                                                  Redeemed, or Matured           2022              2021
Issuances of Long-term Debt
Ameren:
1.75% Senior unsecured notes due 2028                    March                $     -           $   450

Ameren Missouri:
3.90% First mortgage bonds due 2052 (green
bonds) (a)                                               April                    524                 -
2.15% First mortgage bonds due 2032 (green
bonds) (a)                                                June                      -               524
Ameren Illinois:
3.85% First mortgage bonds due 2032                      August                   499                 -
2.90% First mortgage bonds due 2051 (green
bonds) (a)                                                June                      -               349
0.375% First mortgage bonds due 2023                      June                      -               100

ATXI:


2.96% Senior unsecured notes due 2052                    August                    95                 -
Total Ameren long-term debt issuances                                         $ 1,118           $ 1,423
Issuances of Common Stock
Ameren:
DRPlus and 401(k) (b)                                   Various               $    29    (c)    $    36
August 2019 forward sale agreement (d)                  February                    -               113
ATM program (e)                                         Various                     -               148
Total Ameren common stock issuances (f)                                       $    29           $   297

Maturities of Long-term Debt
Ameren Illinois:
2.70% Senior secured notes due 2022                    September              $   400           $     -

ATXI:


3.43% Senior unsecured notes due 2050                    August                    50                 -

Total Ameren long-term debt maturities                                        $   450           $     -
Redemptions of Preferred Stock
Ameren Illinois:
6.625% Series                                            March                $     -           $    12
7.75% Series                                             March                      -                 1
Total Ameren Illinois preferred stock
redemptions                                                                   $     -           $    13


(a)Ameren Missouri and Ameren Illinois intend to allocate an amount equal to the
net proceeds to sustainability projects meeting certain eligible criteria.
(b)Ameren issued a total of 0.4 million and 0.4 million shares of common stock
under its DRPlus and 401(k) plan in the nine months ended September 30, 2022 and
2021, respectively.
(c)Excludes an $8 million receivable at September 30, 2022.
(d)Ameren issued 1.6 million shares of common stock to settle the remainder of
the August 2019 forward sale agreement.
(e)Ameren issued 1.8 million shares of common stock under the ATM program.
(f)Excludes 0.4 million and 0.5 million shares of common stock valued at $31
million and $33 million issued for no cash consideration in connection with
stock-based compensation for the nine months ended September 30, 2022 and 2021,
respectively.

See Note 4 - Long-term Debt and Equity Financings under Part I, Item 1, of this report for additional information, including proceeds from issuances of long-term debt, including Ameren Missouri's April 2022 issuance of first mortgage bonds, the use of those proceeds, Ameren's forward equity sale agreements, and the ATM program.

Indebtedness Provisions and Other Covenants



At September 30, 2022, the Ameren Companies were in compliance with the
provisions and covenants contained in their credit agreements, indentures, and
articles of incorporation, as applicable, and ATXI was in compliance with the
provisions and covenants contained in its note purchase agreements. See Note 3 -
Short-term Debt and Liquidity under Part I, Item 1, of this report and Note 4 -
Short-term Debt and Liquidity and Note 5 - Long-term Debt and Equity Financings
under Part II, Item 8, of the Form 10-K for a discussion of provisions,
applicable cross-default provisions, and covenants contained in our credit
agreements, in ATXI's note purchase agreements, and in certain of the Ameren
Companies' indentures and articles of incorporation.
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We consider access to short-term and long-term capital markets to be a
significant source of funding for capital requirements not satisfied by cash
provided by our operating activities. Inability to raise capital on reasonable
terms, particularly during times of uncertainty in the capital markets, could
negatively affect our ability to maintain and expand our businesses. After
assessing their respective current operating performance, liquidity, and credit
ratings (see Credit Ratings below), Ameren, Ameren Missouri, and Ameren Illinois
each believes that it will continue to have access to the capital markets on
reasonable terms. However, events beyond Ameren's, Ameren Missouri's, and Ameren
Illinois' control may create uncertainty in the capital markets or make access
to the capital markets uncertain or limited. Such events could increase our cost
of capital and adversely affect our ability to access the capital markets.

Dividends



The amount and timing of dividends payable on Ameren's common stock are within
the sole discretion of Ameren's board of directors. Ameren's board of directors
has not set specific targets or payout parameters when declaring common stock
dividends, but it considers various factors, including Ameren's overall payout
ratio, payout ratios of our peers, projected cash flow and potential future cash
flow requirements, historical earnings and cash flow, projected earnings,
impacts of regulatory orders or legislation, and other key business
considerations. Ameren expects its dividend payout ratio to be between 55% and
70% of annual earnings over the next few years.

See Note 4 - Short-term Debt and Liquidity and Note 5 - Long-term Debt and Equity Financings under Part II, Item 8, of the Form 10-K for additional discussion of covenants and provisions contained in certain of the Ameren Companies' financial agreements and articles of incorporation that would restrict the Ameren Companies' payment of dividends in certain circumstances. At September 30, 2022, none of these circumstances existed at Ameren, Ameren Missouri, or Ameren Illinois and, as a result, these companies were not restricted from paying dividends.



The following table presents common stock dividends declared and paid by Ameren
Corporation to its common shareholders and by Ameren subsidiaries to their
parent, Ameren Corporation, for the nine months ended September 30, 2022 and
2021:

             Nine Months
           2022       2021
Ameren   $  457      $ 423

ATXI          -         82


Credit Ratings

Our credit ratings affect our liquidity, our access to the capital markets and credit markets, our cost of borrowing under our credit facilities and our commercial paper programs, and our collateral posting requirements under commodity contracts.

The following table presents the principal credit ratings by Moody's and S&P, as applicable, effective on the date of this report:



                                      Moody's          S&P

Ameren:


Issuer/corporate credit rating         Baa1           BBB+
Senior unsecured debt                  Baa1            BBB
Commercial paper                        P-2            A-2
Ameren Missouri:
Issuer/corporate credit rating         Baa1           BBB+
Secured debt                            A2              A
Senior unsecured debt                  Baa1         Not Rated
Commercial paper                        P-2            A-2
Ameren Illinois:
Issuer/corporate credit rating          A3            BBB+
Secured debt                            A1              A
Senior unsecured debt                   A3            BBB+
Commercial paper                        P-2            A-2
ATXI:
Issuer credit rating                    A2          Not Rated
Senior unsecured debt                   A2          Not Rated


A credit rating is not a recommendation to buy, sell, or hold securities. It
should be evaluated independently of any other rating. Ratings are subject to
revision or withdrawal at any time by the rating organization.
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Collateral Postings



Any weakening of our credit ratings may reduce access to capital and trigger
additional collateral postings and prepayments. Such changes may also increase
the cost of borrowing, resulting in an adverse effect on earnings. Cash
collateral postings and prepayments made with external parties, including
postings related to exchange-traded contracts, were $145 million, $140 million,
and $5 million for Ameren, Ameren Missouri, and Ameren Illinois, respectively,
and cash collateral posted by external parties were $33 million, $2 million, and
$31 million for Ameren, Ameren Missouri, and Ameren Illinois, respectively, at
September 30, 2022. A sub-investment-grade issuer or senior unsecured debt
rating (below "Baa3" from Moody's or below "BBB-" from S&P) at September 30,
2022, could have resulted in Ameren, Ameren Missouri, or Ameren Illinois being
required to post additional collateral or other assurances for certain trade
obligations amounting to $157 million, $75 million, and $82 million,
respectively.

Changes in commodity prices could trigger additional collateral postings and
prepayments. Based on credit ratings at September 30, 2022, if market prices
were 15% higher or lower than September 30, 2022 levels in the next 12 months
and 20% higher or lower thereafter through the end of the term of the commodity
contracts, then Ameren, Ameren Missouri, and Ameren Illinois could be required
to post an immaterial amount, compared to each company's liquidity, of
collateral or provide other assurances for certain trade obligations.

OUTLOOK



Below are some key trends, events, and uncertainties that may reasonably affect
our results of operations, financial condition, or liquidity, as well as our
ability to achieve strategic and financial objectives, for 2022 and beyond. For
additional information regarding recent rate orders, lawsuits, and pending
requests filed with state and federal regulatory commissions, including those
discussed below, see Note 2 - Rate and Regulatory Matters under Part I, Item 1,
of this report and Note 2 - Rate and Regulatory Matters under Part II, Item 8,
of the Form 10-K.

Operations

•We are observing inflationary pressures on the prices of commodities, labor,
services, materials, and supplies, as well as increasing interest rates. Ameren
Missouri and Ameren Illinois are generally allowed to pass on to customers
prudently incurred costs for fuel, purchased power, and natural gas supply.
Additionally, for certain non-commodity cost changes, the use of trackers,
riders, and formula ratemaking, as applicable, mitigates our exposure. The
inflationary pressures and increasing interest rates could impact our ability to
control costs and/or make substantial investments in our businesses, including
our ability to recover costs and investments, and to earn our allowed ROEs
within frameworks established by our regulators, while maintaining rates that
are affordable to our customers. In April 2022, the MISO released the results of
its 2022 capacity auction, which projected a capacity shortage in the central
region of the MISO footprint, which includes Ameren Missouri's and Ameren
Illinois' service territories. The annual auction resulted in a capacity price
increase from $5 per MW-day for June 2021 through May 2022 to $237 per MW-day
for June 2022 through May 2023. Based on estimated power prices and customer
demand as of September 30, 2022, the capacity price set by the April 2022 MISO
auction, and the amounts of energy and capacity hedged through IPA procurement
events, Ameren Illinois estimates an increase to purchased power costs for
calendar year 2022, compared to 2021, of approximately $450 million. The actual
increase to purchased power costs will vary due to differences between estimated
and realized power prices as well as customer demand satisfied by Ameren
Illinois, which will be affected by changes in customers' elections to use
Ameren Illinois or an alternative retail electric supplier for their energy
needs. Higher purchased power costs for calendar year 2023, compared to 2021, is
also likely but Ameren Illinois cannot reasonably estimate the amount of the
increase as additional energy and capacity contracts for 2023 will be entered
into as a part of an IPA procurement event in the first half of 2023, as well as
pricing determined by the April 2023 MISO capacity auction. Because of the power
procurement riders, the difference between actual purchased power costs and
costs billed to customers in a given period is deferred as a regulatory asset or
liability. These pass-through costs do not affect Ameren Illinois' net income,
as any change in costs are offset by a corresponding change in revenues. Also,
based on the capacity price set by the April 2022 MISO auction, Ameren Missouri
estimates increases to capacity revenues and purchased power costs for the
calendar year 2022, compared to 2021, of approximately $375 million. Ameren
Missouri sells nearly all of its capacity to the MISO and purchases the capacity
it needs to supply its native load sales from the MISO. Higher capacity revenues
and purchased power costs for calendar year 2023, compared to 2021, is also
likely but Ameren Missouri cannot reasonably estimate the amount of the
increases as capacity pricing for June 2023 through December 2023 will be
determined by the April 2023 MISO capacity auction. Capacity revenues and
purchased power costs are a part of the net energy costs recoverable under the
FAC, with 95% of the variance between net energy costs and the amount set in
base rates recovered or refunded through the FAC.

•The PISA permits Ameren Missouri to defer and recover 85% of the depreciation
expense and earn a return at the applicable WACC on investments in certain
property, plant, and equipment placed in service, and not included in base
rates. The regulatory asset for accumulated PISA deferrals also earns a return
at the applicable WACC, with all approved PISA deferrals added to rate base
prospectively and recovered over a period of 20 years following a regulatory
rate review. Additionally, under the RESRAM, Ameren Missouri is permitted to
recover the 15% of depreciation expense not recovered under the PISA, and earn a
return at the applicable
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WACC for investments in renewable generation plant placed in service to comply
with Missouri's renewable energy standard. Accumulated RESRAM deferrals earn
carrying costs at short-term interest rates. The PISA and the RESRAM mitigate
the effects of regulatory lag between regulatory rate reviews. Those investments
not eligible for recovery under the PISA and the remaining 15% of certain
property, plant, and equipment placed in service, unless eligible for recovery
under the RESRAM, remain subject to regulatory lag. Ameren Missouri defers its
cost of debt relating to PISA eligible investments as an offset to interest
charges with the difference between the applicable WACC and its cost of debt
recognized in revenues when recovery of such deferrals is reflected in customer
rates. As a result of the PISA election, additional provisions of the law apply
to Ameren Missouri, including limitations on electric customer rate increases.
Ameren Missouri does not expect to exceed these rate increase limitations in
2022. In June 2022, Missouri Senate Bill 745 was enacted and became effective on
August 28, 2022. The law extended Ameren Missouri's PISA election through
December 2028 and allows for an additional extension through December 2033 if
requested by Ameren Missouri and approved by the MoPSC, among other things. The
law established a 2.5% annual limit on increases to the electric service revenue
requirement used to set customer rates due to the inclusion of incremental PISA
deferrals in the revenue requirement. The limitation will be effective for
revenue requirements approved by the MoPSC after January 1, 2024, and will be
based on the revenue requirement established in the immediately preceding rate
order. The current rate limitation, which is effective through 2023, is a 2.85%
cap on the compound annual growth rate in the average overall customer rate per
kilowatthour, based on the electric rates that became effective in April 2017,
less half of the annual savings from the TCJA that was passed on to customers as
approved in a July 2018 MoPSC order.

•In 2018, the MoPSC issued an order approving Ameren Missouri's MEEIA 2019 plan.
The plan includes a portfolio of customer energy-efficiency and demand response
programs through December 2023 and low-income customer energy-efficiency
programs through December 2024. Ameren Missouri intends to invest approximately
$360 million over the life of the plan, including $80 million in 2022 and
$75 million in 2023. The plan includes the continued use of the MEEIA rider,
which allows Ameren Missouri to collect from, or refund to, customers any
difference in actual MEEIA program costs and related lost electric margins and
the amounts collected from customers. In addition, the plan includes a
performance incentive that provides Ameren Missouri an opportunity to earn
additional revenues by achieving certain customer energy-efficiency goals. If
target spending goals are achieved for 2022 and 2023, additional revenues of $11
million and $13 million would be recognized in 2022 and 2023, respectively.

•In August 2022, Ameren Missouri filed a request with the MoPSC seeking approval
to increase its annual revenues for electric service by $316 million. The MoPSC
proceeding relating to the proposed electric service rate changes will take
place over a period of up to 11 months, with a decision by the MoPSC expected by
June 2023 and new rates effective by July 2023. Ameren Missouri cannot predict
the level of any electric service rate change the MoPSC may approve, whether the
requested regulatory recovery mechanisms will be approved, or whether any rate
change that may eventually be approved will be sufficient for Ameren Missouri to
recover its costs and earn a reasonable return on its investments when the rate
change goes into effect.

•Ameren Illinois and ATXI use a forward-looking rate calculation with an annual
revenue requirement reconciliation for each company's electric transmission
business. Based on expected rate base and the currently allowed 10.52% ROE,
which includes a 50 basis point incentive adder for participation in an RTO, the
revenue requirements that will be included in 2023 rates for Ameren Illinois'
and ATXI's electric transmission businesses are $476 million and $194 million,
respectively. These revenue requirements represent an increase in Ameren
Illinois' revenue requirement of $54 million and a decrease in ATXI's revenue
requirement of $1 million from the revenue requirements reflected in 2022 rates,
primarily due to higher expected rate base at Ameren Illinois and a lower
expected rate base at ATXI. These rates will affect Ameren Illinois' and ATXI's
cash receipts during 2023, but will not determine their respective electric
transmission service operating revenues, which will instead be based on 2023
actual recoverable costs, rate base, and a return on rate base at the applicable
WACC as calculated under the FERC formula ratemaking framework.

•The allowed base ROE for FERC-regulated transmission rates previously charged
under the MISO tariff is the subject of pending proceedings. Depending on the
outcome of the proceedings, the transmission rates charged during previous
periods and the currently effective rates may be subject to change. In
March 2020, the FERC issued a Notice of Proposed Rulemaking on its transmission
incentives policy, which increased the incentive ROE for participation in an RTO
to 100 basis points from the current 50 basis points and revised the parameters
for awarding incentives, while limiting the overall incentives to a cap of 250
basis points, among other things. In April 2021, the FERC issued a Supplemental
Notice of Proposed Rulemaking, which proposes to modify the Notice of Proposed
Rulemaking's incentive for participation in an RTO by limiting this incentive
for utilities that join an RTO to 50 basis points and only allowing them to earn
the incentive for three years, among other things. If this proposal is included
in a final rule, Ameren Illinois and ATXI would no longer be eligible for the 50
basis point RTO incentive adder, prospectively. The FERC is under no deadline to
issue a final rule on this matter. Ameren is unable to predict the ultimate
impact of any changes to the FERC's incentives policy, or any further order on
base ROE. A 50 basis point change in the FERC-allowed ROE would affect Ameren's
and Ameren Illinois' annual net income by an estimated $12 million and
$8 million, respectively, based on each company's 2022 projected rate base.

•Ameren Illinois' electric distribution service performance-based formula
ratemaking framework under the IEIMA allows Ameren Illinois to reconcile
electric distribution service rates to its actual revenue requirement on an
annual basis to reflect actual recoverable costs incurred and a return at the
applicable WACC on year-end rate base. If a given year's revenue requirement
varies from the amount
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collected from customers, an adjustment is made to electric operating revenues
with an offset to a regulatory asset or liability to reflect that year's actual
revenue requirement, independent of actual sales volumes. The regulatory balance
is then collected from, or refunded to, customers within two years from the end
of the year. Pursuant to an order issued by the ICC in March 2021, Ameren
Illinois expects to use the current IEIMA formula framework to establish annual
customer rates effective through 2023, and reconcile the related revenue
requirement for customer rates established for 2022 and 2023. As such, Ameren
Illinois' 2022 and 2023 revenues would reflect each year's actual recoverable
costs, year-end rate base, and a return at the applicable WACC, with the ROE
component based on the annual average of the monthly yields of the 30-year
United States Treasury bonds plus 580 basis points. For more information on the
March 2021 ICC order, see Note 2 - Rate and Regulatory Matters under Part II,
Item 8, of the Form 10-K. By law, the decoupling provisions extend beyond the
end of existing performance-based formula ratemaking, which ensures that Ameren
Illinois' electric distribution revenues authorized in a regulatory rate review
are not affected by changes in sales volumes.

•Pursuant to the IETL, which was enacted in September 2021, Ameren Illinois may
file an MYRP with the ICC to establish base rates for electric distribution
service to be charged to customers for each calendar year of a four-year period.
The base rates for a particular calendar year would be based on forecasted
recoverable costs and an ICC-determined ROE applied to Ameren Illinois'
forecasted average annual rate base using a forecasted capital structure, with a
common equity ratio of up to 50% being deemed prudent and reasonable by law and
a higher equity ratio requiring specific ICC approval. The ROE determined by the
ICC is applicable to each calendar year of the four-year period and is subject
to annual adjustments based on certain performance incentives and penalties. An
MYRP would allow Ameren Illinois to reconcile electric distribution service
rates to its actual revenue requirement on an annual basis, subject to a
reconciliation cap and adjustments to the ROE. Ameren Illinois' existing riders
will remain effective whether it elects to file an MYRP or a traditional
regulatory rate review. Additionally, electric distribution service revenues
would continue to be decoupled from sales volumes under either election. Ameren
Illinois plans to file an MYRP by January 20, 2023, with rates effective
beginning in 2024. For additional information regarding ratemaking under an
MYRP, including details of the reconciliation cap, see Note 2 - Rate and
Regulatory Matters under Part II, Item 8, of the Form 10-K.

•In 2021, the ICC issued an order in Ameren Illinois' annual update filing that
approved a $58 million increase in Ameren Illinois' electric distribution
service rates beginning in January 2022. Ameren Illinois' 2022 electric
distribution service revenues will be based on its 2022 actual recoverable
costs, 2022 year-end rate base, and a return at the applicable WACC, with the
ROE component based on the annual average of the monthly yields of the 30-year
United States Treasury bonds plus 580 basis points. As of September 30, 2022,
Ameren Illinois expects its 2022 electric distribution year-end rate base to be
$3.9 billion. The 2022 revenue requirement reconciliation adjustment will be
collected from, or refunded to, customers in 2024. A 50 basis point change in
the annual average of the monthly yields of the 30-year United States Treasury
bonds would result in an estimated $11 million change in Ameren's and Ameren
Illinois' annual net income, based on Ameren Illinois' 2022 projected year-end
rate base, including electric energy-efficiency investments. Ameren Illinois'
recognized ROE for the first nine months of 2022 was based on an estimated
annual average of the monthly yields of the 30-year United States Treasury bonds
of 3.09%.

•In April 2022, Ameren Illinois filed its annual electric distribution service
performance-based formula rate update with the ICC to be used for 2023 rates. In
July 2022, Ameren Illinois filed a revised request seeking to increase its
annual revenues for electric distribution service by $84 million. In August
2022, the ICC staff submitted its calculation of the revenue requirement
included in Ameren Illinois' update filing, recommending a $61 million increase
in Ameren Illinois' electric distribution service rates. An ICC decision in this
proceeding is required by December 2022, with new rates effective in January
2023. These rates will affect Ameren Illinois' cash receipts during 2023, but
will not affect electric distribution service revenues, which will be based on
2023 actual recoverable costs, 2023 year-end rate base, and a return at the
applicable WACC as calculated under the Illinois performance-based formula
ratemaking framework.

•Ameren Illinois expects to file for a natural gas delivery service regulatory
rate review in early 2023, with a future test year ended December 31, 2024.
Ameren Illinois' current allowed ROE for natural gas delivery service is 9.67%,
with a capital structure composed of 52% common equity, a rate base of $2.1
billion, and a 2021 future test year.

•Pursuant to Illinois law, Ameren Illinois' electric energy-efficiency
investments are deferred as a regulatory asset and earn a return at the
applicable WACC, with the ROE component based on the annual average of the
monthly yields of the 30-year United States Treasury bonds plus 580 basis
points. The allowed ROE on electric energy-efficiency investments can be
increased or decreased by up to 200 basis points, depending on the achievement
of annual energy savings goals. While the ICC has approved a plan for Ameren
Illinois to invest approximately $120 million per year in electric
energy-efficiency programs through 2025, the ICC has the ability to reduce the
amount of electric energy-efficiency savings goals in future program years if
there are insufficient cost-effective programs available, which could reduce the
investments in electric energy-efficiency programs. The electric
energy-efficiency program investments and the return on those investments are
collected from customers through a rider and are not recovered through the
electric distribution service performance-based formula ratemaking framework.
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•Ameren Missouri's next refueling and maintenance outage at its Callaway energy
center is scheduled for the fall of 2023. During a scheduled refueling, which
occurs every 18 months, maintenance expenses are deferred as a regulatory asset
and amortized until the completion of the next refueling and maintenance outage.
During an outage, depending on the availability of its other generation sources
and the market prices for power, Ameren Missouri's purchased power costs may
increase and the amount of excess power available for sale may decrease versus
non-outage years. Changes in purchased power costs and excess power available
for sale are included in the FAC, which results in limited impacts to earnings.
In addition, Ameren Missouri may incur increased non-nuclear energy center
maintenance costs in non-outage years.

•Ameren Missouri continues to experience coal transportation disruptions in
2022, resulting in coal inventory levels below targeted levels at the Labadie
and Sioux energy centers as of the end of October 2022. Prolonged disruptions in
the delivery of coal could have adverse effects on Ameren Missouri's electric
generation operations and could result in increased purchased power expense.
Under the FAC, 95% of the variance in net energy costs, which includes purchased
power expense, from the amount set in base rates is expected to be recovered.
Further, the timing of payments for purchased power costs compared to the
recovery through customer rates under the FAC could have adverse effects on
Ameren and Ameren Missouri's liquidity.

•In December 2021, Ameren Missouri filed a motion with the United States
District Court for the Eastern District of Missouri to modify a September 2019
remedy order issued by the district court to allow the retirement of the Rush
Island Energy Center in advance of its previously expected useful life in lieu
of installing a flue gas desulfurization system. The March 31, 2024 compliance
date contained in the district court's September 2019 remedy order remains in
effect unless extended by the district court. In July 2022, in response to an
Ameren Missouri request for a final, binding reliability assessment, the MISO
designated the Rush Island Energy Center as a system support resource and
concluded that certain mitigation measures, including transmission upgrades,
should occur before the energy center is retired. The transmission upgrade
projects have been approved by the MISO, and Ameren Missouri has started design
and procurement activities necessary to complete the upgrades and expects to
complete the upgrades by late 2025. In October 2022, the FERC approved a system
support resource agreement, which became effective retroactively as of September
1, 2022. The agreement details the manner of continued operation for a system
support resource that results in operating during peak demand times and
emergencies. The system support resource designation and the related agreement
are subject to annual renewal and revision. In September 2022, the Rush Island
Energy Center began operating consistent with the system support resource
agreement. In addition, in October 2022, the FERC established hearing and
settlement procedures in response to an August 2022 request from Ameren Missouri
for recovery of non-energy costs under the related MISO tariff. The FERC is
under no deadline to issue an order related to this proceeding. Revenues and
costs under the MISO tariff are expected to be included in the FAC. The district
court has the authority to determine the retirement date and operating
parameters for the Rush Island Energy Center and is not bound by the MISO
determination of the Rush Island Energy Center as a system support resource or
the FERC's approval. The district court is under no deadline to issue a ruling
modifying the remedy order. For additional information on the NSR and Clean Air
Act litigation, see Note 9 - Commitments and Contingencies under Part I, Item 1,
of this report. Ameren Missouri filed a 2022 Change to the 2020 IRP with the
MoPSC in June 2022 to reflect, among other things, the planned acceleration of
the retirement of the Rush Island Energy Center from 2039, the retirement year
for the facility as reflected in the 2020 IRP. In February 2022, the MoPSC
issued an order directing the MoPSC staff to review Ameren Missouri's planned
accelerated retirement of the Rush Island Energy Center, including potential
impacts on the reliability and cost of Ameren Missouri's service to its
customers; Ameren Missouri's plans to mitigate the customer impacts of the
accelerated retirement; and the prudence of Ameren Missouri's actions and
decisions with regard to the Rush Island Energy Center, which is expected to be
addressed in the 2022 electric service regulatory rate review, among other
things. In April 2022, the MoPSC staff filed an initial report with the MoPSC in
which the staff concluded early retirement of the Rush Island Energy Center may
cause reliability concerns. The MoPSC staff is under no deadline to complete
this review. As of December 31, 2021, and September 30, 2022, Ameren and Ameren
Missouri classified the remaining net book value of the Rush Island Energy
Center as plant to be abandoned, net, within "Property, Plant, and Equipment,
Net" on Ameren's and Ameren Missouri's balance sheets. As part of the assessment
of any potential future abandonment loss, consideration will be given to rate
and securitization orders issued by the MoPSC to Ameren Missouri and to orders
issued to other Missouri utilities with similar facts.

•The IETL established emission standards that became effective in September
2021. Ameren Missouri's natural gas-fired energy centers in Illinois are subject
to limits on emissions, including CO2 and NOx, equal to their unit-specific
average emissions from 2018 through 2020, for any rolling twelve-month period
beginning October 1, 2021, through 2029. Further reductions to emissions limits
will become effective between 2030 and 2040, resulting in the closure of the
Venice Energy Center by 2029. The reductions could also limit the operations of
Ameren Missouri's other four natural gas-fired energy centers located in the
state of Illinois, and will result in their closure by 2040. These energy
centers are utilized to support peak loads. Subject to conditions in the IETL,
these energy centers may be allowed to exceed the emissions limits in order to
maintain reliability of electric utility service as necessary. Ameren Missouri
filed a 2022 Change to the 2020 IRP with the MoPSC in June 2022 to reflect,
among other things, the updated scheduled retirement dates of the natural
gas-fired energy centers located in the state of Illinois.

•Due to a change in customer behavior and certain business practices resulting
from the COVID-19 pandemic, there has been a shift in sales volumes by customer
class at both Ameren Missouri and Ameren Illinois, which began in 2020, with an
increase in residential
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sales, and a decrease in commercial and industrial sales. While our electric
sales volumes in the first nine months of 2022, excluding the estimated effects
of weather and customer energy-efficiency programs, were comparable to the same
period in 2021 and, at Ameren Missouri, were comparable to pre-pandemic levels,
Ameren Illinois' sales volumes remain below pre-pandemic levels. However,
revenues from Ameren Illinois' electric distribution business, residential and
small nonresidential customers of Ameren Illinois' natural gas distribution
business, and Ameren Illinois' and ATXI's electric transmission businesses are
decoupled from changes in sales volumes. Further effects of the COVID-19
pandemic on our results of operations, financial position, and liquidity in
subsequent periods will depend on its severity and longevity, future regulatory
or legislative actions with respect thereto, and the resulting impact on
business, economic, and capital market conditions.

•Ameren Missouri and Ameren Illinois continue to make infrastructure investments
and expect to seek increases to electric and natural gas rates to recover the
cost of investments and earn an adequate return. Ameren Missouri and Ameren
Illinois will also seek new, or to maintain existing, legislative solutions to
address regulatory lag and to support investment in their utility infrastructure
for the benefit of their customers. Ameren Missouri and Ameren Illinois continue
to face cost recovery pressures, including limited economic growth in their
service territories, increasing inflation, higher cost of debt, customer
conservation efforts, the impacts of additional customer energy-efficiency
programs, and increased customer use of increasingly cost-effective advancements
in innovative energy technologies, including private generation and energy
storage. However, over the long-term, we expect the decreased demand to be
partially offset by increased demand resulting from increased electrification of
the economy and as a means to address economy-wide CO2 emission concerns. We
expect that increased investments, including expected future investments for
environmental compliance, system reliability improvements, and new generation
sources, will result in rate base and revenue growth but also higher
depreciation and financing costs.

Liquidity and Capital Resources



•In February 2022, Ameren Missouri filed an annual update to its Smart Energy
Plan with the MoPSC, which includes a five-year capital investment overview with
a detailed one-year plan for 2022. The Smart Energy Plan is designed to upgrade
Ameren Missouri's electric infrastructure and includes investments that will
upgrade the grid and accommodate more renewable energy. Investments under the
plan are expected to total approximately $8.4 billion over the five-year period
from 2022 through 2026, with expenditures largely recoverable under the PISA and
the RESRAM.

•In June 2022, Ameren Missouri filed a notice of change in preferred resource
plan with the MoPSC. The filing includes a 2022 Change to the 2020 IRP, which
the MoPSC may review at its election. In connection with the change, Ameren
revised its goals for reduction of carbon emissions. Ameren is targeting
net-zero carbon emissions by 2045, as well as a 60% reduction by 2030 and an 85%
reduction by 2040 based on 2005 levels. Ameren's goals include both direct
emissions from operations, as well as electricity usage at Ameren buildings,
including other greenhouse gas emissions of methane, nitrous oxide, and sulfur
hexafluoride. Achieving these goals will be dependent on a variety of factors,
including cost-effective advancements in innovative clean energy technologies
and constructive federal and state energy and economic policies. The 2022 Change
to the 2020 IRP includes expanding renewable sources by adding 2,800 MWs of
renewable generation by 2030, 400 MWs of battery storage by 2035, and a total of
4,700 MWs of renewable generation and 800 MWs of battery storage by 2040. These
amounts include 350 MWs of solar generation projects discussed below. The change
also includes adding 1,200 MWs of natural gas-fired combined cycle generation by
2031, with plans to switch to hydrogen fuel and/or blend hydrogen fuel with
natural gas and install carbon capture technology if these technologies become
commercially available at a reasonable cost, adding 1,200 MWs of additional
clean dispatchable generation by 2043, the continued implementation of customer
energy-efficiency programs, and the expectation that Ameren Missouri will seek
and receive NRC approval for an extension of the operating license for the
Callaway Energy Center beyond its current 2044 expiration date. Additionally,
the change includes extending the retirement date of the coal-fired Sioux Energy
Center from 2028 to 2030 in order to ensure reliability during the transition to
clean energy generation, which is subject to the approval of a change in the
asset's depreciable life by the MoPSC in Ameren Missouri's current electric
service regulatory rate review, accelerating the retirement date of the Rush
Island coal-fired energy center to 2025, retiring the Meramec coal-fired energy
center at the end of its useful life in 2022, retiring the generating units at
the Labadie coal-fired energy center at the end of their useful lives (two
generating units by 2036 and the other two by 2042), accelerating the retirement
date of the Venice natural gas-fired energy center to 2029, and retiring Ameren
Missouri's other natural gas-fired energy centers in Illinois by 2040. Ameren
Missouri's plan could be affected by, among other factors: Ameren Missouri's
ability to obtain certificates of convenience and necessity from the MoPSC, and
any other required approvals for the addition of renewable resources, retirement
of energy centers, and new or continued customer energy-efficiency programs; the
ability to enter into build-transfer agreements for renewable generation and
acquire that generation at a reasonable cost; the ability of developers to meet
contractual commitments and timely complete projects, which is dependent upon
the availability of necessary labor, materials, and equipment, including those
that are affected by the disruptions in the global supply chain caused by the
COVID-19 pandemic or government actions, among other things; changes in the
scope and timing of projects; the availability of federal production and
investment tax credits related to renewable energy and Ameren Missouri's ability
to use such credits; the cost of wind, solar, and other renewable generation and
battery storage technologies; the cost of natural gas or hydrogen CT
technologies; changes in environmental regulations, including those related to
CO2 and other greenhouse gas emissions; energy prices and demand; and Ameren
Missouri's ability to obtain necessary rights-of-way, easements, and
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transmission interconnection agreements at an acceptable cost and in a timely
fashion. The next integrated resource plan is expected to be filed in September
2023.

•Missouri law allows Missouri electric utility companies to petition the MoPSC
for a financing order to authorize the issuance of securitized utility tariff
bonds to finance the cost of retiring electric generation facilities before the
end of their useful lives. In connection with the planned accelerated retirement
of the Rush Island Energy Center due to the NSR and Clean Air Act Litigation
discussed above, Ameren Missouri expects to seek approval from the MoPSC to
finance the costs associated with the retirement, including the remaining
unrecovered net plant balance associated with the facility, through the issuance
of securitized utility tariff bonds. As such, Ameren Missouri did not request a
change in the depreciation rates related to the Rush Island Energy Center in the
electric regulatory rate review filed in August 2022.

•In February 2022, Ameren Missouri, through a subsidiary, entered into a
build-transfer agreement to acquire, after construction, a 150-MW solar
generation facility, which is expected to be located in southeastern Illinois
and, if approved by the MoPSC, to serve customers under Ameren Missouri's
Renewable Solutions Program. In June 2022, Ameren Missouri, through a
subsidiary, entered into a build-transfer agreement to acquire, after
construction, a 200-MW solar generation facility, which is expected to be
located in central Missouri and support Ameren Missouri's compliance with the
state of Missouri's requirement of achieving 15% of retail sales from renewable
energy sources, of which 2% must be derived from solar energy sources. The
acquisitions are subject to certain conditions, including the issuance of
certificates of convenience and necessity by the MoPSC, obtaining MISO
transmission interconnection agreements, and approval by the FERC. In July 2022,
Ameren Missouri filed for certificates of convenience and necessity with the
MoPSC for both facilities and expects decisions by March 2023 and April 2023 for
the 200-MW facility and the 150-MW facility, respectively. Depending on the
timing of regulatory approvals and the impact of potential sourcing issues
discussed below, the projects could be completed as early as the fourth quarter
of 2024. Capital expenditures related to these facilities are not included in
Ameren's and Ameren Missouri's expected capital investments discussed below.

•Ameren Missouri's 2022 Change to the 2020 IRP targets cleaner and more diverse
sources of energy generation, including solar generation. While rights to
acquire the solar facilities discussed above were secured through build-transfer
agreements, supply chain disruptions, including solar panel shortages and
increasing material costs as a result of government tariffs and other factors,
could affect the costs as well as the timing of these projects and other solar
generation projects. The supply of solar panels to the United States was
significantly disrupted as a result of an investigation initiated by the United
States Department of Commerce in late March 2022, which could result in punitive
tariffs on solar panels imported from four Southeast Asian countries. The
investigation is in response to complaints of Chinese solar manufacturers
shifting solar cells to these countries to avoid tariffs required on imports
from China. The United States Department of Commerce is expected to issue a
preliminary determination by the end of November 2022, and a final determination
by mid-2023. Additionally, certain solar panels from China have been subject to
detention by the United States Customs and Border Protection Agency as a result
of the Uyghur Forced Labor Prevention Act that was passed in December 2021. In
June 2022, President Biden authorized the United States Department of Energy to
use the Defense Production Act to rapidly expand American manufacturing of five
critical clean energy technologies, including solar panel components. President
Biden also took executive action to temporarily lift certain tariffs on solar
panels imported from the four Southeast Asian countries under investigation by
the United States Department of Commerce for 24 months in order to allow the
United States access to a sufficient supply of solar panels to meet electricity
generation needs while domestic manufacturing scales up. Any future tariffs or
other outcomes resulting from the investigation by the United States Department
of Commerce or actions by the United States Customs and Border Protection Agency
could affect the cost and the availability of solar panels and the timing and
amount of Ameren Missouri's estimated capital expenditures associated with solar
generation investments.

•Through 2026, we expect to make significant capital expenditures to improve our
electric and natural gas utility infrastructure, with a major portion directed
to our transmission and distribution systems. We estimate that we will invest up
to $18.0 billion (Ameren Missouri - up to $9.2 billion; Ameren Illinois - up to
$8.6 billion; ATXI - up to $0.2 billion) of capital expenditures during the
period from 2022 through 2026. These planned investments are based on the
assumption of continued constructive regulatory frameworks. Ameren's and Ameren
Missouri's estimates exclude renewable generation investment opportunities of
800 MWs by 2026, which are included in Ameren Missouri's 2022 Change to the 2020
IRP, and investment opportunities that may be approved by the MISO to address
reliability concerns in connection with the planned accelerated retirement of
the Rush Island Energy Center. These investment opportunities may be incremental
to or partially replace other expenditures included in the 2022 through 2026
estimates above.

•In 2021, the MISO issued a report outlining a preliminary long-range
transmission planning roadmap of projects through 2039, which considers the
rapidly changing generation mix within MISO resulting from significant additions
of renewable generation, actual and expected generation plant closures, and
state mandates or goals for clean energy or carbon emissions reductions. In July
2022, the MISO approved the first tranche of projects under the first phase of
the roadmap. A portion of these projects were assigned to various utilities, of
which Ameren was awarded projects that are estimated to cost approximately
$1.8 billion, based on MISO's cost estimate. The MISO is expected to initiate
requests for proposals in December 2022 and March 2023 for additional first
tranche projects crossing Missouri, which are expected to be awarded between
late-2023 and early-2024. These investment opportunities may be incremental to
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or partially replace other expenditures included in the 2022 through 2026
estimates discussed above. In July 2022, a group of industrial customers filed a
complaint with the FERC, challenging provisions of a MISO tariff that exclude
regional transmission projects from the MISO's competitive bid process based on
state laws related to the right of first refusal, which provide an incumbent
utility the right to build, maintain, and own transmission lines located within
its service territory. The complaint seeks to require MISO to revise its tariff
to prohibit the application of state laws related to the right of first refusal
in the MISO's long-range transmission planning and require projects to be bid on
a competitive basis, to the maximum extent possible. It also is asking for
refunds related to any costs under the tariff that would not comply with the
sought-after revisions. The FERC is under no deadline to issue an order in this
proceeding.

•In July 2022, an Illinois law prohibiting the state's oversight of certain
electric utilities' choice of RTO membership ceased to be effective. Given the
change in law and the high prices resulting from MISO's April 2022 capacity
auction, the ICC issued an order requiring Ameren Illinois to perform a
cost-benefit study of continued participation in the MISO compared to
participation in PJM Interconnection LLC, another RTO. The cost-benefit study
will examine the impacts of participation in each RTO, including reliability,
resiliency, affordability, and environmental impacts, among other things, for a
period of five to 10 years beginning June 2024. The ICC order requires Ameren
Illinois to file the study by July 2023. A 30-day comment period will follow.
The ICC is under no obligation to issue an order related to the cost-benefit
study.

•Environmental regulations, including those related to CO2 emissions, or other
actions taken by the EPA or state regulators, or requirements that may result
from the NSR and Clean Air Act Litigation discussed in Note 9 - Commitments and
Contingencies under Part I, Item 1, of this report, could result in significant
increases in capital expenditures and operating costs. Regulations enacted by a
prior federal administration can be reviewed and repealed, and replacement or
alternative regulations can be proposed or adopted by the current federal
administration, including the EPA. The ultimate implementation of any of these
regulations, as well as the timing of any such implementation, is uncertain.
However, the individual or combined effects of existing and new environmental
regulations could result in significant capital expenditures, increased
operating costs, or the closure or alteration of some of Ameren Missouri's coal
and natural gas-fired energy centers. Ameren Missouri's capital expenditures are
subject to MoPSC prudence reviews, which could result in cost disallowances as
well as regulatory lag. The cost of Ameren Illinois' purchased power and natural
gas purchased for resale could increase. However, Ameren Illinois expects that
these costs would be recovered from customers with no material adverse effect on
its results of operations, financial position, or liquidity. Ameren's and Ameren
Missouri's earnings could benefit from increased investment to comply with
environmental regulations if those investments are reflected and recovered on a
timely basis in customer rates.

•The Ameren Companies have multiyear credit agreements that cumulatively provide
$2.3 billion of credit through December 2025, subject to a 364-day repayment
term for Ameren Missouri and Ameren Illinois, with the option to seek
incremental commitments to increase the cumulative credit provided to
$2.7 billion. See Note 3 - Short-term Debt and Liquidity under Part I, Item 1,
of this report and Note 4 - Short-term Debt and Liquidity under Part II, Item 8,
in the Form 10-K for additional information regarding the Credit Agreements. See
Note 5 - Long-Term Debt and Equity Financings under Part II, Item 8, in the Form
10-K for long-term debt maturities from 2022 to 2026 and beyond at Ameren
(parent), Ameren Missouri, Ameren Illinois, and ATXI and see Note 4 - Long-Term
Debt and Equity Financings under Part I, Item 1, of this report for principal
payments made on long-term debt during 2022 through the date of this report.
Ameren, Ameren Missouri, and Ameren Illinois each believe that their liquidity
is adequate given their respective expected operating cash flows, capital
expenditures, and financing plans. To date, the Ameren Companies have been able
to access the capital markets on reasonable terms when needed. However, there
can be no assurance that significant changes in economic conditions, disruptions
in the capital and credit markets, or other unforeseen events will not
materially affect their ability to execute their expected operating, capital, or
financing plans.

•Ameren expects its cash used for currently planned capital expenditures and
dividends to exceed cash provided by operating activities over the next several
years. As part of its funding plan for capital expenditures, Ameren is using
newly issued shares of common stock, rather than market-purchased shares, to
satisfy requirements under the DRPlus and employee benefit plans and expects to
continue to do so through at least 2026. Ameren expects these issuances to
provide equity of about $100 million annually. In addition, in 2021, Ameren
established an ATM program under which Ameren may offer and sell from time to
time up to $750 million of its common stock, which includes the ability to enter
into forward sales agreements, subject to market conditions and other factors.
In the fourth quarter of 2022, Ameren expects to increase the amount available
under the ATM program by approximately $1 billion for equity needs in 2024 and
beyond. Ameren has entered into multiple forward sale agreements under the ATM
program with various counterparties relating to 6.6 million shares of common
stock. As of September 30, 2022, Ameren could have settled the forward sale
agreements with physical delivery of 6.6 million shares of common stock to the
respective counterparties in exchange for cash of $587 million. As of
September 30, 2022, Ameren had substantially utilized the available capacity
under the ATM program, which takes into account the forward sale agreements. For
additional information regarding outstanding forward sale agreements, including
settlement dates, see Note 4 - Long-Term Debt and Liquidity under Part I,
Item 1, of this report. Ameren expects to settle approximately $300 million of
the forward sale agreements and issue 3.4 million shares of common stock by
December 31, 2022. In addition, Ameren expects to settle approximately $300
million of the forward sale agreements and issue 3.2 million shares of common
stock by December 31, 2023. Ameren plans to issue approximately $300 million of
equity each year from 2022 to 2026 in addition to issuances under the DRPlus and
employee benefit plans. Ameren expects its equity to total capitalization ratio
to be approximately 45% through December 31, 2026, with
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the long-term intent to support solid investment-grade credit ratings. Ameren Missouri and Ameren Illinois expect to fund cash flow needs through debt issuances, adjustments of dividends to Ameren (parent), and/or capital contributions from Ameren (parent).



•The IRA was enacted in August 2022, and includes various income tax provisions,
among other things. The law extends federal production and investment tax
credits for projects beginning construction through 2024 and allows for a 10%
adder to the production and investment tax credits for siting projects at
existing energy communities as defined in the law, which includes sites
previously used for coal-fired generation. The law also creates clean energy tax
credits for projects placed in service after 2024. The clean energy tax credits
will apply to renewable energy production and investments, along with certain
nuclear energy production, and will be phased out beginning in 2033, at the
earliest. The phase-out is triggered when greenhouse gas emissions from the
electric generation industry are reduced by at least 75% from the annual 2022
emission rate or at the beginning of 2033, whichever is later. The law allows
for transferability to an unrelated party for cash of up to 100% of certain tax
credits generated after 2022. In addition, the new law imposes a 15% minimum tax
on adjusted financial statement income, as defined in the law, for corporations
whose average annual adjusted financial statement income exceeds $1 billion for
three consecutive preceding tax years effective for tax years beginning after
December 31, 2022. Once a corporation exceeds this three-year average annual
adjusted financial statement income threshold, it will be subject to the minimum
tax for all future tax years. Additional regulations, interpretations,
amendments, or technical corrections to or in connection with the IRA may be
issued by the IRS or United States Department of Treasury.

•As of September 30, 2022, Ameren had $177 million in tax benefits from federal
and state income tax credit carryforwards and $19 million in tax benefits from
federal and state net operating loss carryforwards, which will be utilized in
future periods. Future expected income tax payments are based on expected
taxable income, available income tax credits, and current tax law. Expected
taxable income is affected by expected capital expenditures, when property,
plant, and equipment is placed in-service or retired, and the timing of
regulatory reviews, among other things. Ameren expects federal income tax
payments at the required minimum levels from 2022 to 2026 resulting from the
anticipated use of existing production tax credits generated by Ameren
Missouri's High Prairie Renewable and Atchison Renewable energy centers,
existing tax net operating losses, tax credit carryforwards, tax overpayments,
and outstanding refunds. Ameren does not expect to be subject to the 15% minimum
tax imposed by the IRA in 2023. Ameren expects annual federal income tax
payments, including payments related to the 15% minimum tax pursuant to the IRA,
to be immaterial through 2026.

The above items could have a material impact on our results of operations,
financial position, and liquidity. Additionally, in the ordinary course of
business, we evaluate strategies to enhance our results of operations, financial
position, and liquidity. These strategies may include acquisitions,
divestitures, opportunities to reduce costs or increase revenues, and other
strategic initiatives to increase Ameren's shareholder value. We are unable to
predict which, if any, of these initiatives will be executed. The execution of
these initiatives may have a material impact on our future results of
operations, financial position, or liquidity.

REGULATORY MATTERS

See Note 2 - Rate and Regulatory Matters under Part I, Item 1, of this report.

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