Companhia Energetica de Minas Gerais : Results Presentation 2Q21

2Q21 RESULTS

OUR ENERGY - YOUR STRENGTH

2

Disclaimer

Certain statements and estimates in this material may represent expectations about future events or results, which are subject to risks and uncertainties that may be known or unknown. There is no guarantee that the events or results will take place as referred to in these expectations.

These expectations are based on the present assumptions and analyses from the point of view of our management, in accordance with their experience

and other factors such as the macroeconomic environment, market conditions in the electricity sector, and expected future results, many of which are not

under our control.

Important factors that could lead to significant differences between actual results and the projections about future events or results include Cemig's business strategy, Brazilian and international economic conditions, technology, our financial strategy, changes in the electricity sector, hydrological conditions, conditions in the financial and energy markets, uncertainty on our results from future operations, plans and objectives, and other factors. Due to these and other factors, our results may differ significantly from those indicated in or implied by such statements.

The information and opinions herein should not be understood as a recommendation to potential investors, and no investment decision should be based on

the veracity, currentness or completeness of this information or these opinions. None of our staff nor any party related to any of them or their representatives shall have any responsibility for any losses that may arise from use of the content of this presentation.

To evaluate the risks and uncertainties as they relate to Cemig, and to obtain additional information about factors that could give rise to different results from those estimated by Cemig, please consult the section on Risk Factors included in the Reference Form filed with the Brazilian Securities Commission (CVM) - and in the 20-FForm filed with the U.S. Securities and Exchange Commission (SEC).

In this material, financial amounts are in R$ million (R$ mn) unless otherwise stated. Financial data reflect the adoption of IFRS.

Cemig highlights

Ebitda and

Net profit

Distribution:

Opex and Ebitda

Quality

indicators

Tariff adjustment

Investment

3

Robust results in 2Q21: Ebitda	R$ 2,590 million	-	up 38.8% YoY
Net profit	R$ 1,946 million	-	up 79.9% YoY

Cemig D's Opex and Ebitda within regulatory limits for the first time:

Opex at	R$ 128 mn	-	below the regulatory level,
Ebitda at	R$ 119 mn	-	above the regulatory level.

Service quality continues to improve:

DEC outage indicator at lowest ever: 9.46 hours / 12-month

Tariff adjustment of 1.28% - zero for residential consumers (lowest increase in the sector, for second consecutive year)

R$ 822 mn capex in 1H21; principal contracting in progress for the largest investment program in Cemig's history (R$ 22.5 billion in 5 years)

Cemig highlights

Eurobond buyback

GSF effects: recognition

Revaluation: national grid assets

Acquisition

Liquidity, leverage

4

US$500 million repurchase of Eurobond completed

- in line with Cemig's published strategy

R$ 910 million addition to Intangible assets for rights to extend generating plant concessions.

Revaluation with updating of assets using own Ke as cost of capital generates gain adding R$ 211 mn to net profit.

Acquisition of Sete Lagoas Transmissora de Energia, in July, for R$ 41 mn,

• adds annual RAP of R$ 8 mn.

Solid cash position: R$ 6,998 mn

• ensures execution of investment plan, and management of debt
  Low leverage: Ebitda/Net debt = 0.91

5

Renegotiation of hydrological risk (GSF)

GSF (Generation Scaling Factor) agreement created a gain of R$ 910 mn in Intangible assets from rights to extend concessions

	Intangible assets:	Estimated	Offtake	New date for
	Right to extend concession	extension of concession	guarantee
Item	end of
	R$ mn	Months	(MWaverage)	concession
Emborcação	426	22	500	May 26, 2027
Nova Ponte	255	25	270	August 11, 2027
Sá Carvalho	40	20	56	August 27, 2026
Rosal	9	43	29	December 13, 2035
Lot D *
Três Marias	116	84	239	January 3, 2053
Salto Grande	40	84	75	January 03, 2053
Camargos	9	84	21	January 3, 2053
Itutinga	8	84	28	January 3, 2053
Other Lot D	3	-	57
Others	5	-	399	-
Total	910		1,674

* Lot D = Plants awarded at Auction 12 of 2015, with 30-year concessions from 2016.