Results Presentation – 1Q26

ENGIE Brasil Energia S.A.

May 7,

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Results Presentation 1Q26 3

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Capacity Reserve Auction (LRCAP): Jaguara HPP secured 195.78 MW of contracted capacity for a 15-year period as of August 2030.

Addition of 232 MW of installed capacity, with total CAPEX of approximately BRL

1.2 billion.

Successful bid in Aneel Transmission Auction 01/2026, securing Lot 2 e Sub-lots 3.

Facilities located in SC and PR, as well as CE and RN, for a 30-year term concession.

The Board of Directors approved the adherence to the mechanism for renegotiation of the liability recorded as Public Asset Use (UBP) for the Cana Brava and Ponte de Pedra HPP concessions.

Fitch Ratings reaffirmed the Long-Term National Rating at 'AAA(bra)'. The long term-international ratings were also reiterated at 'BB+' (foreign currency) and 'BBB-' (local currency), all with a stable outlook.

Approval the distribution of dividends at the AGM, in the amount of R$ 557.8 million (R$ 0.4883/share), related to the fiscal year of 2025.

Ex-dividends starting May 5, 2026.

Payment on May 20, 2026.

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Results Presentation 1Q26 5

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| Adjusted Ebitda1 (R$ million)

2,044

2,248

4

+10.0%

R$ 265 million R$ 27 million

1Q25 1Q26

R$ 34 million

Adjusted Ebitda Non-recurring

| Adjusted Net Income (R$ million)

826 792

R$ 204 million R$ 62 million R$ 28 million

3 3

-4.1%

823

789

1Q25 1Q26

Adjusted Net Income Non-recurring

Note: 1Adjusted Ebitda: net income + income tax and social contribution + financial result + depreciation and amortization + non-recurring.

Results Presentation 1Q26 6

1 2 3 4 5 6 7

| Emissions intensity1 (tCO2e/MWh)

0.0478

| Health and Safety - Frequency rate

(own employees + service providers)*

| Gender distribution in leadership

positions (%)

1.140

67.8%

68.3%

0.900

0.450

0.900

32.2%

31.7%

0.0233

0.0019

0.0008

1Q25 1Q26

ENGIE NIS*

*Source: Ministry of Science, Technology and Innovation

| Investments in Innovation (R$ million)

11.7

12.9

1Q25 1Q26

Frequency rate Reference (≤)

*Nº of acidentes / millions of hours of exposure to the risk

| Social Responsibility Investments (R$ million)

1.5

1.4

1.0

2.5

1Q25 1Q26

Women Men

| Engaged People - "Conexão" Community

Relationship Program

13,689

10,696

Note:

1Q25 1Q26

1Q25 1Q26

Incentivized Resources Own Resources

1Q25 1Q26

Results Presentation 1Q26 7

1 Emissions data subject to review after annual consolidation into the emissions inventory.

02

1 2 3 4 5 6 7

+2.9 p.p.

-0.2 p.p.

96.6% 99.5%

91.7% 93.0%

93.8% 95.6%

+1.3 p.p.

+1.8 p.p.

99.98%99.78%

Hydro

Wind

Photovoltaic

Transmission

1Q25 1Q26

Note: Considering programmed and forced stoppages.

Results Presentation 1Q26 9

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| % of Curtailment over Generation - 1Q26 (avg MW)

Wind + solar generation

Total generation

214

1,250

(17%)

Generation Curtailment

214

6,054

(4%)

Curtailment in 1Q26 in line with National Integrated System (SIN).

Organic

growth

in wind and solar generation with entry into full commercial operation of the Serra

| % of Curtailment* per source

Source: ENGIE Brasil Energia internal study based on premises disclosed by ONS and subject to updates.

do Assuruá Wind and Assú Sol Photovoltaic Complexes.

Increased proprietary installed capacity by 1.4 GW between 1Q25 and 1Q26.

Results Presentation 1Q26 10

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New solar

Solar

SHP

Biomass

Wind

1Q26

1Q25

691

729

21

21

5

236

1,056

109

989

| Generation by Complementary Source (avg MW)

+6.7%

234

| Generating Scaling Factor ( GSF ' )

-7p.p

1.052

1.102

1.047

1.021

1.005

1.057

0.985

0.909

Jan

Feb

Mar 1Q

2025 2026

Note:

1GSF': without the effects of seasonality of the agents.

Results Presentation 1Q26 11

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| Energy Balance (% of total; in avg MW)

as of March 31, 2026

165

572 (3%)

(10%)

5,622

248

(4%)

572

(10%)

5,560

653

(12%)

572

(10%)

5,413

5,355

1,489

(28%)

1,683

(31%)

4,418

2,960

(50%)

2,464

(44%)

1,921

(35%)

572

(11%)

1,053

(24%)

572

(11%)

1,122

(21%)

956

(18%)

572

(13%)

649

(15%)

2,178

(37%)

2,338

(42%)

2,414

(43%)

2,230

(41%)

2,144

(40%)

2,144

(49%)

5,875

| Uncontracted energy compared to the availability of a given period

40%

41%

35%

32% 31%

25%

25%

28% 28%

12%

15%

13% 12%

7%

3% 3%

6%

4%

45%

45%

2026 2027 2028 2029 2030

12.31.2023 12.31.2024 12.31.2025 03.31.2026

2026 2027 2028 2029 2030 2031

Evolution of the number of free customers and consumer units

2,434

(+34.6% compared to 1Q25)

Number of free consumers in 1Q262

4,895

(+29.2% compared to 1Q25)

Consumer Units served in 1Q262

Regulated Market Free Market

Commercial hedge1

Available

Notes:

1 Indicative commercial hedge, subject to fluctuation depending on market conditions.

2 Considers all consumer units with active contracts.

Results Presentation 1Q26 12

03

1 2 3 4 5 6 7

691

(23%)

47

3,013

+13.1%

11

74 (149)

3,409

(2%)

2,275

(76%)

2,746

(81%)

NOR 1Q25

Price and sales volume

CCEE Others Trading

Transmission

NOR 1Q26

Generation and portfolio sale Trading Transmission

Results Presentation 1Q26 14

| TAG's Net Income Change (R$ million)

1 2 3 4 5 6 7

953

Net income 1Q25

(297)

EBIT

43

(34)

Financial result

64

Income taxes

763

Net income 1Q26

Contribution to

Ebitda

Stake of 17.5%

in TAG, resulting in the contribution of

R$ 133 million through equity income to the Company's Ebitda in 1Q26.

Results Presentation 1Q26 15

1 2 3 4 5 6 7

1,756

(84%)

1,804

168

(9%)

167

(9%)

2,044

121

34

1,525

(75%)

32

1,469

(81%)

2,248

2,089

200

(10%)

133

(6%)

+10.0%

+10.0%

+15.8%

4

(4)

1,790

(80%)

1,794

(80%)

2,244

2,040

1,529

(75%)

Ebitda 1Q25

Non-recurring

Adjusted

Ebitda 1Q25

IFRS*

adjustment

Ebitda adjusted by trans./quota 1Q25

Operating and commercial performance

Costs and Operating Expenses

Transmission Equity income

(TAG)

Ebitda adjusted by trans./quota 1Q26

IFRS*

adjustment

Adjusted Ebitda 1Q26

Non-recurring

Ebitda 1Q26

Generation and trading1 Equity Income (TAG) Transmission

Notes:

1 Considering the result from generation and trading segments.

*IFRS: International Financial Reporting Standards

Adjusted Ebitda: net income + income tax and social contribution + financial result + depreciation and amortization + non-recurring.

Results Presentation 1Q26 16

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-4.1%

-4.1%

826 (3)

204

823 789 3 792

28

Net income 1Q25

Non-recurring Adjusted net

income 1Q25

Adjusted Ebitda

Depreciation and amortization

Financial Result

Income Taxes Adjusted net Non-recurring

income 1Q26

Net income 1Q26

Results Presentation 1Q26 17

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Debt control

+

active management of debt costs

| Debt Overview (R$ million)

24,442

20,905

29,329

3.8x

31,911 6,465

4.1x

461

24,984

+

successful investment

decisions

2.9x

(R$ million)

2.1x

3.3x

2.7x

3.3x

Total Debt / Ebitda2

3.2x

ensure balanced levels of the Net Debt/Ebitda ratio.

2023 2024 2025 1Q26 Cash and

equivalents

Escrow deposits

Net Debt 1Q26

Local Currency Debt1

Total Debt / LTM Adjusted Ebitda2

Net Debt / LTM Adjusted Ebitda2

Notes:

1 Gross debt, net of hedge operations.

2 Adjusted Ebitda in the past 12 months.

Results Presentation 1Q26 18

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| Maturity Debt Schedule (R$ million)

3,245

2,551 2,397 2,604

2,199 2,208 2,200

1,876

2,222

1,885

1,603 1,595

788

231

2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037

Fixo

IPCA TJLP CDI PRE

Indexation of energy sales contracts mitigates exposure of debt to IPCA and cash position mitigates part of CDI exposure.

average average 2038 to 2043 to

2042 2048

1Q26: Nominal cost of debt:

11.3% p.a. (equivalent to IPCA + 6.9%)

Average debt term: 7.2 years 1Q25: 11.6% p.a. (equiv. to IPCA + 5.8%)

Results Presentation 1Q26 19

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| Allocated/Expected Capex (R$ million)

9,664

7,640

7,270

7,367

6,941

6,040

4,007

3,150

2,854

2,737

1,450

2022 2023 2024 2025 2026E 2027E 2028E

Adjusted Ebitda Allocated Capex Expected Capex

Results Presentation 1Q26 20

The expansion plan and maintenance CAPEX are supported by a strong cash flow generation and prudent funding strategy.

Note:

1 Does not consider interests incurred during the construction.

• Approved the participation in the mechanism for renegotiating the installments due

  under the UBP for the Cana Brava and Ponte de Pedra hydropower plants concessions.

• The Law 15.235/25 authorizes the settlement of future UBP obligations, through a single payment, calculated as the present value of the installments.

Notes:

1 As of December 31, 2025.

2 As of December 8, 2025. The final amount to be paid will be restated at the variation of the SELIC rate as from December 8, 2025, until the date of final settlement. The monthly

installments paid during that same period, also adjusted at the SELIC rate, will be deducted from this adjusted balance.

1 2 3 4 5 6 7

• 16/April: Board of Directors approval

| Next steps:

• 30/April: formal adherence

❑ +30 days: amendment signing

❑ +30 days: financial settlement

Results Presentation 1Q26 21

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Contracted RAP1:

R$ 282.7 million

Capex Aneel2:

R$ 2,667 million

Concession period:

30 years

Deadline to start operation:

March 2029 (66 months)

Contracted RAP1:

In 1Q26, progress was made in environmental licensing and land clearance activities.

Ongoing pre-construction activities and engineering development.

BA

Asa Branca

Graúna

MG

ES

PR

Graúna

SP

SC

under implementation

under operation Graúna: 5% of RAP

Asa Branca: 32.3% of RAP

R$ 268.3 million

Capex Aneel2:

R$ 2,933.6 million

Concession period :

30 years

Deadline to start operation:

December 2029 (60 months)

Technical features:

• estimated length of 1,000 Km;

• 4 transmission lines of 500 kV single-circuit, crossing 60 municipalities in the states of Bahia, Minas Gerais and Espírito Santo.

  Notes:

  1 Value as of June/25.

  2 Value as of December/22.

  Technical features:

  • construction of ~732 km length (6 new transmission lines) and 2 new substations;

  • brownfield section: operation of 4 existing lines (162 km) and 2 own substations

  • 47 municipalities.

  
  
  

  LT 500kV Morro do Chapéu II -Poções III section (BA), with 334 kilometers of length was energized on November 26, 2025, representing 32.3% of total RAP.

  In 1Q26, the Installation License was obtained for all transmission lines, as well as for the construction of the Medeiros Netto II Substation.

  Notes:

  1 Valor as of June/25.

  2 Valor as of December/22.

  
  
  

  Results Presentation 1Q26 23

  
  
  

  1 2 3 4 5 6 7

  Colibri (SC, PR, CE, RN)

  CE RN

  Colibri A, B, C, D (Sublots 3)

  3-A (RN): 1 synchronous compensator 3-B (CE): 1 synchronous compensator 3-C (CE): 2 synchronous compensators 3-D (RN): 1 synchronous compensator

  Contracted RAP1:

  R$ 122.8 million

  Capex Aneel1:

  R$ 1,574.7 million

  Concession period:

  30 years

  Deadline to start operation:

  December 2029 (42 months)

  Relevant local and operational synergies with other Company assets.

  PR Colibri Sul (Lot 2): 143Km

  Sinergy:

  SC • The transmission line connects to the Ponta Grossa Substation (Gralha Azul)

  Technical features:

  • Lot 2: construction of one 230 kV transmission line, approximately 143 km in length.

  • Sublots 3A-3B-3C-3D: installation of five synchronous condensers.

    Note:

    1 Value as of August/25.

    Results Presentation 1Q26 24

    
    
    

    1 2 3 4 5 6 7

    Jaguara HPP (MG)

    BA

    Expansion of Jaguara HPP aligned with the Company's strategy to invest in high-performance assets with 100% clean energy.

Current installed capacity:

424 MW

Commercial capacity:

324 MW MG

ES

Concession period:

June 2048

Increase of installed capacity:

+232 MW (2 turbines of 116 MW)

Auction performed in March 2026.

Technical features:

• 70% of commercial capacity under quota

  regime (ACR), free of GSF.

• 30% of commercial capacity directed to the Free Contracting Environment (ACL).

Notes:

1 Baseline: September 2025 (annual adjustment in August based on the IPCA).

2 Baseline: March 2026.

Results Presentation 1Q26 25

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| Production (avg MW)

+6.7%

2,998

2,944

54

2,809

Uptime

| PPAs portfolio3 (avg MW)

2,182 2,257 2,257 2,257 2,257 2,257

Installed Capacity:

3,750 MW 50 Generating Units 75 MW each GU

Physical Guarantee2:

Ratio (FID) in 1Q26:

100%1

94 538

14

538

14

95

561

14 22

95

583

14

95

95

2,182 avg MW 90m extended 2,257 avg MW 90m constant

1,565

-29

1,565

1,565

1,565

Shareholding Structure

ENGIE Brasil Participações

1Q25 1Q26

2026-27 2028-34

2035

2036-42

2043

2044-45

Notes:

Jirau part Bolivia part

Regulated Bilateral Partners

Uncontracted

Losses

AXIA Energia

MITSUI & CO.

1 Subject to final CCEE booking.

2 Order 2.946 - The Ministry of Mines and Energy established new physical guarantee amounts for the Jirau HPP of 2,222.6 aMW for operation at the 90-meter extended level and 2,335.1 aMW for operation at the 90-meter constant level. Of the total increase, one-third belongs to the Bolivian government. Therefore, the share allocated to Brazil corresponds to 2,182.2 aMW (extended level) and 2,257.2 aMW (constant level).

3 Process of concession term extension until August 16, 2047, currently under review by ANEEL, pursuant to Memorandum No. 111/2026-SCE/Aneel.

Results Presentation 1Q26 26

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Dec/25 - 1Q26

• Board of Directors authorized the start of feasibility studies for the potential transfer;

• Special Independent Committee for Transactions with Related Parties establish;

• Studies and analyses regarding the most appropriate structure for the transfer to the Company of the shareholding interest in Jirau Energia.

  Next steps

• Special Committee for Transactions with Related Parties recommendation;

• Related corporate resolutions.

Installed Capacity:

3,750 MW 50 Generating Units 75 MW each GU

Physical Guarantee2:

2,182 avg MW 90m extended 2,257 avg MW 90m constant

Shareholding

Structure ENGIE Brasil

Participações

AXIA Energia

MITSUI & CO.

Results Presentation 1Q26 27

05

1 2 3 4 5 6 7

Good portfolio management and diversification into other regulated segments, such as transmission, natural gas transportation and energy contracts in the ACR, result in stability and predictability of results.

Recent Capex cycle linked to renewables and transmission expansion still not fully contributing to Ebitda.

Investments:

Amounted to

R$ 44.2 billion,

with 79% leverage

Transmission:

| ROE1 - Adjusted Return on Equity (%)

34.9

| ROIC2 - Adjusted Return on Invested Capital (%)

3,205 km

under operation and

6 own substations

27.4

20.4

25.8

19.0

20.3

17.2

13.8

16.2 13.9

2023 2024 2025 1Q25 1Q26 2023 2024 2025 1Q25 1Q26

Notes: ENGIE Brasil Energia internal study based on the Company's Financial Statements.

1 ROE: net income of the past 4 quarters / shareholders' equity. Adjusted ROE net of non-recurring.

2 ROIC: effective tax rate x EBIT / invested capital (invested capital: debt - cash and cash equivalents -

deposits earmarked for debt servicing + SE). Adjusted ROIC net of non-recurring.

3 Nominal amount.

Adjusted Ebitda:

+141%

Dividends and Interest on Equity:

R$ 18.9 billion

Adjusted Net Income:

+74%

Results Presentation 1Q26 29

| Adjusted Ebitda breakdown:

9%

6%

14%

15%

Generation/Trading

2016

2025

1Q26

Transmission

TAG

100%

76%

80%

1 2 3 4 5 6 7

Notes:

1 Ebitda: net income + income tax and social contribution + financial result + depreciation and amortization.

2 Adjusted Ebitda represents: net income + income tax and social contribution + financial result + depreciation and amortization + impairment

+ non-recurring.

3 Adjusted Ebitda, less the effects of IFRS in the transmission segment and quota plants.

4 ROE: adjusted net income of the past 4 quarters/ shareholders' equity.

5 ROIC: effective tax rate x adjusted EBIT / invested capital (invested capital: debt - cash and cash equivalents - deposits earmarked for debt servicing + SE).

6 Adjusted amount, net of gains from hedge operations.

7 Total electricity output from the plants operated by ENGIE Brasil Energia.

8 Disregarding sales for quotas regime (Jaguara and Miranda HPPs).

9 Net of taxes, exports and trading operations.

Results Presentation 1Q26 30