Fitch Ratings has assigned an 'A+' rating to Northern States Power Company-Minnesota's (NSP-Minnesota) issuance of green first mortgage bonds (FMBs).

The FMBs will rank pari passu with NSP-Minnesota's other senior secured obligations.

Net proceeds will be used to finance or refinance existing and future eligible green expenditures, including amounts that were previously financed with commercial paper (CP).

NSP-Minnesota's Long-Term Issuer Default Rating (IDR) is 'A-'. The Rating Outlook is Stable.

Key Rating Drivers

Relatively Constructive Regulation: NSP-Minnesota operates in a relatively constructive and stable regulatory environment across three states, predominantly in Minnesota. Supportive regulatory mechanisms include fuel cost and purchased power adjustments and capital investment riders for environmental improvements, renewable generation and electric transmission. A revenue decoupling pilot program in Minnesota provides further cash flow stability by eliminating the impact of weather and energy efficiency programs.

Minnesota 2022 Electric Rate Case: In October 2021, NSP-Minnesota filed a three-year electric rate case with the Minnesota Public Utilities Commission (MPUC) totaling $677 million. The filing is based on forward test years and a 10.2% ROE and 52.5% equity ratio. The MPUC approved in December 2021 a $247 million interim rate increase beginning Jan. 1, 2022. A final order by the MPUC is expected by June 2023.

Minnesota 2022 Natural Gas Rate Case: In November 2021, NSP-Minnesota filed a request with the MPUC for an annual natural gas rate increase of $36 million, or 6.6%. The filing is based on a 2022 forecast test year and a 10.5% ROE and 52.5% equity ratio. The MPUC approved in December 2021 a $25 million interim rate increase beginning Jan. 1, 2022. A final order by the MPUC is expected by April 2023.

Winter Storm Uri: NSP-Minnesota realized $230 million of excess net natural gas, fuel and purchased energy costs in February 2021 as a result of the natural gas supply and demand imbalance that resulted from Winter Storm Uri's extreme cold temperatures. These costs were largely deferred as regulatory assets. NSP-Minnesota filed with the MPUC seeking recovery of $36 million of those costs through the standard 12-month true-up and $179 million of those costs over an extended period. An MPUC decision is expected in the summer of 2022 regarding disallowances and the final cost recovery plan.

Large Capex Plan: NSP-Minnesota has a large capex plan that includes significant spending associated with management's 'steel for fuel' renewable energy investment strategy and electric transmission. Capex is projected to total approximately $10.25 billion over 2022-2026. Riders for certain capital investments mitigate concerns associated with high capital spending.

Adequate Financial Metrics: Fitch expects NSP-Minnesota's financial metrics to remain supportive of existing ratings. Fitch forecasts FFO leverage to average 3.5x-3.8x through 2024.

Parent/Subsidiary Linkage: Parent and subsidiary linkage exists and follows a weak parent/strong subsidiary approach for NSP-Minnesota. Fitch considers NSP-Minnesota to be stronger than parent Xcel Energy Inc. (BBB+/Stable) due to the utility's low-risk operations and exposure to relatively constructive regulatory jurisdictions.

Fitch considers the legal ring-fencing factor 'porous' due to the general protections afforded by economic regulation, including a restriction on dividend payments. The access & control factor is also evaluated as 'porous.' Xcel centrally manages the treasury function for its utilities and is the sole source of equity. There is also a shared revolving credit facility for Xcel and its utility subsidiaries; however, each subsidiary issues its own long-term debt. Fitch would allow the utilities' Long-Term IDRs to be up to two notches higher than Xcel's Long-Term IDR.

Derivation Summary

The credit profiles of NSP-Minnesota, Public Service Company of Colorado (PSCo; A-/Stable) and Northern States Power Company-Wisconsin (NSP-Wisconsin; A-/Stable) are similar and well positioned at an 'A-' Long-Term IDR. PSCo, NSP-Minnesota and NSP-Wisconsin all operate within relatively constructive regulatory environments with reasonably good rates of return. All three entities undertook large capex plans, although timely cost recovery in their respective regulatory jurisdictions helps mitigate concerns about high capex.

PSCo and NSP-Minnesota benefit from a larger scale and scope of operations than NSP-Wisconsin. The financial metrics of the three entities are similar, although PSCo's leverage is expected to remain slightly higher. Fitch forecasts FFO leverage to average 4.0x-4.1x through 2024 at PSCo, 3.5x-3.8x at NSP-Minnesota and 3.8x at NSP-Wisconsin.

Key Assumptions

Fitch's Key Assumptions Within Its Rating Case for the Issuer Include:

Total base capex of $10.25 billion over 2022-2026;

Rate case outcomes consistent with historical rate orders;

Normal weather.

RATING SENSITIVITIES

Factors that could, individually or collectively, lead to a positive rating action/upgrade:

A positive rating action is unlikely in the near term due to the large capex plan;

FFO leverage expected to remain less than 3.5x on a sustained basis.

Factors that could, individually or collectively, lead to a negative rating action/downgrade:

FFO leverage expected to exceed 4.5x on a sustained basis;

A material deterioration of the Minnesota regulatory environment that meaningfully reduces the stability and predictability of earnings and cash flow;

A shift in management strategy that results in weaker financial support from Xcel.

Best/Worst Case Rating Scenario

International scale credit ratings of Non-Financial Corporate issuers have a best-case rating upgrade scenario (defined as the 99th percentile of rating transitions, measured in a positive direction) of three notches over a three-year rating horizon; and a worst-case rating downgrade scenario (defined as the 99th percentile of rating transitions, measured in a negative direction) of four notches over three years. The complete span of best- and worst-case scenario credit ratings for all rating categories ranges from 'AAA' to 'D'. Best- and worst-case scenario credit ratings are based on historical performance. For more information about the methodology used to determine sector-specific best- and worst-case scenario credit ratings, visit https://www.fitchratings.com/site/re/10111579.

Liquidity and Debt Structure

Adequate Liquidity: Fitch considers liquidity for Xcel and its utility subsidiaries to be adequate.

Xcel and its utility subsidiaries primarily meet short-term liquidity needs through the issuance of CP under each of their revolving credit facilities (RCFs), all of which expire in June 2024. RCF borrowing limits for each entity are $1.25 billion for Xcel, $700 million for PSCo, $500 million for NSP-Minnesota, $500 million for SPS and $150 million for NSP-Wisconsin. NSP-Minnesota had no borrowings and $11 million of LCs drawn at March 31, 2022, leaving $489 million of availability under its RCF.

Liquidity is also available to PSCo, NSP-Minnesota and SPS through participation in an intercompany money pool. Borrowing limits are set at $250 million for PSCo and NSP-Minnesota, $150 million for NSP-Wisconsin and $100 million for SPS.

Xcel and its utility subsidiaries require modest cash on hand. Xcel had $90 million of unrestricted cash and cash equivalents at March 31, 2022, of which $48 million was at NSP-Minnesota.

Xcel and its subsidiaries have manageable long-term debt maturity schedules over the next five years. NSP-Minnesota has $300 million of 2.15% FMBs due Aug. 15, 2022; $400 million of 2.6% FMBs due May 15, 2023; and $250 million of 7.125% FMBs due July 1, 2025. NSP-Minnesota announced April 20, 2022 that it has submitted a redemption notice to redeem all of its 2.15% FMBs due Aug. 15, 2022 on May 20, 2022.

Issuer Profile

NSP-Minnesota is a regulated integrated electric and natural gas distribution utility that serves approximately 1.5 million electric customers and 0.5 million natural gas customers primarily in Minnesota. NSP-Minnesota is a wholly-owned subsidiary of Xcel Energy Inc.

Summary of Financial Adjustments

No financial statement adjustments were made that depart materially from those contained in the published financial statements of the relevant rated entities.

Date of Relevant Committee

13 October 2021

REFERENCES FOR SUBSTANTIALLY MATERIAL SOURCE CITED AS KEY DRIVER OF RATING

The principal sources of information used in the analysis are described in the Applicable Criteria.

ESG Considerations

Unless otherwise disclosed in this section, the highest level of ESG credit relevance is a score of '3'. This means ESG issues are credit-neutral or have only a minimal credit impact on the entity, either due to their nature or the way in which they are being managed by the entity. For more information on Fitch's ESG Relevance Scores, visit www.fitchratings.com/esg.

RATING ACTIONS

Entity / Debt

Rating

Northern States Power Company-Minnesota

senior secured

LT

A+

New Rating

Page

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