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EARNINGS RELEASE PRESENTATION GRUPO energisa ENGI11 B3 LISTED N2 ri.energisa.com.br 2 Q26
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IMPORTANT NOTICE This presentation may contain forward-looking statements pertaining to expected future events or results, in accordance with the regulations of the Brazilian Securities Commission. Such statements rely on assumptions and analysis performed by the Company according to its experience, the economic environment, market conditions and expected future events, many of which are out of the Company’s control. Important factors which may lead to significant differences between actual results and forward-looking statements include: the Company’s business strategy, the Brazilian and international economic situation, technology, financial strategy, development of the public services industry, hydrological conditions, financial markets situation, uncertainty related to future operations’ results, plans, objectives, expectations and intentions, among others. In view of the aforementioned factors, the Company’s actual results may differ significantly from those indicated or implicit in forward-looking statements. The information and opinions contained in this document shall not be interpreted as a recommendation to possible investors, and no investment decision should rely on such information or opinions. No company advisor or related parties are liable for any loss resulting from the use or contents of this presentation. w w w . r i . e n e r g i s a . c o m . b r /
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F I N A N C I A L P E R F O R M A N C E 2Q ri.energisa.com.br CONSOLIDATED
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(1) Ajustado: descontado do VNR da Distribuição, do EBITDA societário da Transmissão e com adição do EBITDA regulatório da Transmissão além dos efeitos não recorrentes e/ou não caixa Financial Performance CONSOLIDATED 440 88 2T25 2T26 LUCRO LÍQUIDO em R$ Milhões ajustado recorrente (1) -80% 2T25 JUROS em R$ Milhões 2T26 SWAP + MTM EFEITO ACORDO ERO 1.590 2.734 DESPESAS FINANCEIRAS +72% 297 OUTRAS DESPESAS Levar impacto das despesas financ. Para endividamento 1.943 1.954 23 39 2T25 2T26 EBITDA ajustado recorrente (1) em R$ Milhões +Equivalência patrimonial da Norgás 1.966 1.993 +1,4% Mesmo com evolução operacional, o lucro foi impactado pela pressão nas despesas financeiras do período SPEECH: MESMA TAXA DE JUROS ENTRE OS TRI JUROS SOBRE UM SALDO MAIOR MAIS OU MENOS 200 MM DE JUROSNON-RECURRING AND/OR NON-CASH EFFECTS The agreement between the State of Rondônia and ERO resulted in the settlement of CAERD's legacy liabilities, generating a net cash inflow. ERO Settlement +R$489 million in EBITDA +R$94 million in Net Income MAINS IMPACTS Transmission Asset Disposal Accounting reclassification of assets held for sale, with no cash impact and affecting statutory earnings only. -R$596 million in Other Operating Income (Expenses) MAIS IMPACT Visit our website ri.energisa.com.br
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(1) Adjusted: excluding Distribution Network Replacement Value (NRV), excluding Transmission statutory EBITDA, and including Transmission regulatory EBITDA, as well as non-recurring and/or non-cash effects. 440 88 2T25 2T26 NET INCOME in R$ Million Recurring Adjusted (1) -80% 1.943 1.954 23 39 2Q25 2Q26 EBITDA Recurring Adjusted (1) in R$ Million +Equivalence Norgás 1.966 1.993 +1,4% Despite operational improvement, net income was impacted by higher financial expenses during the period. Financial Performance CONSOLIDATED 2Q25 2Q26
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R$ Billion CONSOLIDATED DEBT 3,1 3,1 3,4 3,5 3,1 27,6 29,2 32,8 33,3 32,5 Net Debt / Adjusted EBITDA Covenant Ratio (LTM, x) JUN 25 SEP 25 DEC 25 MAR 26 JUN 26 AVERAGE DEBT MATURITY 6,7 years AVERAGE COST OF DEBT 99,7% of CDI Quasi Equity and asset divestments support deleveraging and strengthen the Group’s capital structure 12.815 3.726 6.078 2.017 5.480 4.022 21.728 jun/26 2026 2027 2028 2029 2030 Após 2030 Cash | Financial Investments | Sector Credits Debt DEBT AMORTIZATION SCHEDULE $ Million FINANCIAL EXPENSES $ Million (807) (2) (1.786) (948) (1.590) 613 (2.734) 2T25 JUROS MTM + SWAP OUTRAS DESPESAS Desp antes CAERD EFEITO caerd 2t262Q25 2Q262Q26 Ex. ERO INTEREST OTHERS ERO Settlement SWAP + MTM +72% Financial Performance CONSOLIDATED After 2030
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2 Q ri.energisa.com.br Electricity Distribution Quality energy for everyone PER FO R MA N CE PER FO R MA N CE
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Power Market Energisa continued to grow faster than Brazil EMT e EMS +6% ESS, EMR e ERO +4% HIGHLIGHTS Distributed Energy Volume in % 10,5 10,9 2Q25 2Q26 +4%in GWh 41% 21% 17% 9% 12% 31% 35% 19% 6% 9% YTD through June 2026 vs. 2025 4,0 6,2 2,9 3,4 0,91,1 3,4 -0,6 2,7 -1,7 Total Residential Industrial Commercial Other Categories Energisa Brasil BRAZIL ✓ Crescimento acima do Brasil em todas as classes, especialmente residencial e industrial ✓ Residencial foi o principal destaque na Energisa, impulsionado pelo aumento do consumo médio e consumidores (renda e clima) ✓ Crescimento residencial moderado do Brasil impactado pelo clima mais ameno em períodos pontuais ✓ Industrial também foi destaque na Energisa, puxado por produção de alimentos. Peso relativo no Grupo dessa atividade é maior que no Brasil ✓ Metalurgia e químicos foram a principal queda, com maior representatividade no agregado do país RESIDENCIAL RURAL INDUSTRIAL COMMERCIAL OTHERS Energisa has a higher residential share than the Brazilian average (41% vs. 31%) Fonte: EPE +4% Fonte: Energisa — perfil de consumo por classe e ramo industrial (2025); EPE — Anuário Estatístico de Energia Elétrica 2025 (mix nacional por classe, base SIMPLES) Market growth across all concession areas Consumption mix provides resilience against industrial cycles +82%
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PMSO in R$ Million CAPEXHighlight of the increase in operating costs at EMT and EMS to support compliance with regulatory targets. Investments in quality, efficiency, and market expansion. 1.398 1.567 2T25 2T26 Investments that enhance service quality +12% 2025 2026 in R$ Million 827 928 2T25 2T26 2Q26 vs 2Q25 / in R$ Million BY DISTRIBUTION UTILITY +1 2% 2Q25 2Q26 EMT EMS ESE EMR ERO EAC ETO EPB ESS 81 43 6 2 2 (11) (9) (10) (2) 2Q25 2Q26
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Operational Discipline 5th consecutive quarter below the regulatory limit 7 of 9 distribution utilities operate below the regulatory limit 96,69 96,76 96,89 96,98 97,21 2Q22 2Q23 2Q24 2Q25 2Q26 13,05% 12,28% r e a l Regulatory Collection Rate (%) Last Twelve Months (LTM) (% of Energy Injected) Last 12 Months 7,68 9,16 9,59 13,93 8,75 14,34 5,14 18,70 23,44 9,31 10,10 12,03 16,52 9,53 16,68 6,32 23,77 39,08 EMR ESE EPB EMT EMS ETO ESS ERO EAC DEC OVERALL WITHIN REGULATORY LIMITS (%) DEC/ FEC GLOBAL(%)2026 LIMIT (%) Best Result in the Company's History 3,81 4,09 3,40 6,14 4,18 5,50 3,01 7,30 7,85 6,20 6,07 6,85 10,70 6,07 9,94 5,06 14,57 26,78 EMR ESE EPB EMT EMS ETO ESS ERO EAC FEC OVERALL WITHIN LIMITS (%) Consolidated Losses Global Quality Indicators Delinquency Management Allowance for Expected Credit Losses Indicator (R$ million) 1,41 1,43 1,35 1,41 0,56 *Adjusted (excluding non-recurring effects) Excludes the provision related to overdue receivables from Oi and the debt settlement agreement with CAERD. 433 443 424 447 433 2T25 3T25 4T25 1T26 2T26 1,37* 2Q25 3Q25 4Q25 1Q26 2Q26
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ri.energisa.com.br Gas Distribution 2Q RELIABILITY FLEXIBILITY PER FO R MA N CE
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Accelerated customer base growth, infrastructure expansion, and a stronger regional presence over three years under Energisa Group’s management. 275 249 284 331 2023 2024 2025 2026 LTM Distribution Margin R$ million 210 187 218 286 2023 2024 2025 2026 LTM EBITDA R$ million + 36%+ 20%+ 28% Over 3 years R$ Millions QUARTER YTD 2Q26 2Q25 Var. % 6M26 6M25 Var. % Gross Margin 81 51 + 59 155 108 + 43 EBITDA 65 34 + 90 123 73 + 68 Net Income 18 (6) 31 (6) CAPEX 30 19 + 61 47 36 + 31 2025 vs. 2026 Espírito Santo ES Gás and Energisa Group have earned the trust of consumers in Espírito Santo. 6th Largest Customer Base in the Country IN GAS DISTRIBUTION 78 85 96 100 2023 2024 2025 2026 YTD Customer Base Thousand More Gas, More Industry, More Espírito Santo + 28%
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(2) EBITDA aj. by equity Gross Margin Per Combination 31 58 23 39 2T25 2T26 54 in R$ Million 96 Equity EBITDA +80% 51 81 139 162 2T25 2T26 in R$ Million 100% CDLs 190 243+28% CLIENTS Market developments VOLUME KM NETWORK 341 350 359 370 378 2T25 3T25 4T25 1T26 2T26 551 588 614 528 572 2T25 3T25 4T25 1T26 2T26 3,8 3,9 3,9 4,0 4,0 2T25 3T25 4T25 1T26 2T26 Thousand m³ Thousand Captive+Free Gas Distribution Combination 19 30 47 39 2T25 2T26 100% CDLs Investments 66 69 +5% Gas Distribution Combination +11% +4% +8% _Algás’ 2026 RTO increased the unit margin by 46% _Cegás expansion — first-ever piped gas supply in the CRAJUBAR region First industrial customer already connected to the network _Customer base expansion of 11.4% (2Q26 vs 2Q25) ES Gás + Norgás EDG EDG 2Q25 2Q26 2Q25 2Q26 2Q25 2Q26 Thousand 2Q25 3Q25 4Q25 1Q26 2Q26 2Q25 3Q25 4Q25 1Q26 2Q26 2Q25 3Q25 4Q25 1Q26 2Q26
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2 Q ri.energisa.com.br PER FO R MA N CE Transmission
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Asset Divestment 100% 100% EPT EAP EAM EMA EAM II EPA II EPA I EGO I ETT ETT II Energisa Transmissão de Energia S.A. LXTE LTTEPlena LMTE Transaction Scope (5 Operating Transmission Assets) R$ 2,3 Bn (Dec/25) ENTERPRISE VALUE EQUITY VALUE (Dec/25) R$ 1,5 Bn EV/EBITDA Implied 10,1x EV/RAP Implied 8,3x Asset Extension (KM) RAP 25-26 (R$ MM) Concession Expiration Status EPA I 267 68,7 Aug/47 Operational EPA II 139 56,1 Sep/48 Operational ETT 734 90 Mar/49 Operational ETT II - 5,4 Sep/51 Operational EGO I 136 54,9 Aug/47 Operational Scope 1.276 275,1 - - Shareholding Structure 1 Portfolio Optimization 2 Value Creation 3 Impact on Deleveraging 4 Strengthened Platform 2.3x Above the Market Median
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8 Concessions R$ 782 MM Operating + Non-operating Total Revenue R$ 737 MM Total RAP Fiber Optics R$ 45 MM Annual Permitted Revenue (RAP) Schedule *RAP Round 26/27 Excluding fiber-optics revenue **ANEEL terms Overview Remaining Divested 27% Transaction Scope 73% Remaining Portfolio RAP Composition IMPLEMENTATION TIMELINE ASSET PROGRESS RAP SCHEDULE** EAM 87% Current: R$ 54,2 MM (54%) Final: R$ 100,4 MM (100%) MAR/30 EAM II 88% R$ 22,2 MM AUG/27 EMA 22% R$ 128,6 MM JUN/30 740 828 609 737 2025 2026* 2027* 2030* 288
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2 Q ri.energisa.com.br PER FOR MANCE
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Combined Results of the Businesses 20 16 12 1 49 2Q25 2Q26 + 147 % DISTRIBUTED GENERATION FREE MARKET VAS EBITDA contribution by business 476 MWp Installed capacity + 26,4% Distributed Generation R$ 49 MM EBITDA +48% Revenue-generating customer base Lower delinquency, while monthly churn remained stable at levels below the market benchmark Free Market Value - Added Services GWh4.254 +1,5% Energy Sales 6M26 MTM Positive impact from forward contracts + R$ 19MM + 34% Sales growth and new business expansion EBITDA +22% R$ 8 MM in R$ Million 2Q26 2Q26 1º Half/2026 2Q26 35 110 103 213 2024 2025 UDM26 518% vs. 2024 95% vs. 2025 Combined EBITDA GROWTH Includes ECOM mark-to-market (MtM) LTM26
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2Q ri.energisa.com.br PER FOR MANCE Innovative and digital financial solutions for the energy sector.
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Financial Performance Key Profitability Indicators in % LTM25 LTM26 ROE -56 +36 ROIC -44 +37 Cash Generation in R$ Million 11 18 2T25 2T26 + 62% Net Income 11 19 2T25 2T26 + 67% -48 42 8 18 2024 2025 1Q26 2Q26 Voltz's new cash generation phase strengthens the Energisa Group's value creation capacity. in R$ Million 2Q25 2Q26 2Q25 2Q26
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2 Q Q&A Relações com investidores ri@energisa.com.br
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Investor Relations ri@energisa.com.br Thank you ! Share your feedback!
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Attachments
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(1) Discounted VNR Value, Non-Recurring Effect Electricity Distribution Financial Indicators 2.655 2Q26 2.791 1.700 1.713 650 319 1.398 1.567 - 51% - 1% - 137 p.p + 12% 2Q25 5.441 6M26 5.580 3.412 3.309 1.209764 2.555 3.021 - 37% + 3% - 139 p.p + 18% 6M25 Recurring Net Income (1) Adjusted gross margin(1) Recurring Adjusted EBITDA(1) Investiments In R$ million
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81 2Q26 2Q25 51 65 34 (6) 18 1930 - +90% +30p.p +61% 178179 +1% 606671 +11% 8998 +10% HOLDING Operational and Financials indicators 155 6M26 6M25 108 123 73 (6) 31 3647 - +68% + 47p.p +31% 324344 +6% 606671 +11% 8998 +10% Investiments Recurring net income (loss) EBITDA (*) Gross Margin (*) Volume milion m³ Rede KM Clients thousand In R$ million
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HOLDING Operational and Financials indicators 162 2Q26 2Q25 139 117 86 7294 4739 +31% +35% +17% -17% 374393 +5% 3.1713.371 +6% 252281 +11% 319 6M26 6M25 276 233 170 150 190 110 90 +26% +37% +16% -18% 251281 +11% 3.1713.371 +6% 252281 +11% In R$ million Recurring Net Income EBITDA Gross Margin Volume million m³ Network KM Clients thousand Investiments - The amounts are not proportional to Energisa’s ownership stake and represent 100% of CDL’s results.
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Transmission Financial Indicators 79 2Q26 2Q25 82 164 150 10(5) 7063 - +9% -3p.p. - 10% (116) (105) + 11% 83 6M26 6M25 83 334 310 21(2) 111100 (212) (211) - +8% -0,5p.p. - 9% + 1% In R$ million EBITDA Margin Regulatory(%) EBITDA Regulatory Investiments Financial results Net income (loss) Regulatory
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* EBITDA and Net Income Excluding the Mark-to-Market Effect of Energisa Comercializadora. Financial Indicators (re)energisa + 48% + 6% + 22% 2Q26 2Q25 49 33 (27) (26) 68 29 14 (48) (39) 9736 -63% + 22% +115% + 26% + 468% + 48% 6M26 6M25 95 76 (50) (9) 914 59 77 (88) (42) 14172 + 111% - 49% - 23% In R$ million Recurring EBITDA* Investiments EBITDA recurring * Net income (loss)* Energy solutions Renewables Free Market