Slide 1: 2Q26 Results Presentation
a ANAAALE ie — | | ‘BSLI GRUPO STED NM
Slide 2: Disclaimer
Disclaimer Disclaimer This presentation may contain forward-looking statements, which are subject to risks and uncertainties, as they were based on the expectations of the Company’s management and on available information. These prospects include statements concerning the Company’s current intension
Slide 3: 2Q26 Highlights
RESULTS PRESENTATION 2Q26 | Highlights Financial Operational Adjusted EBITDA Growth in Wire B Market R$ 2.92 billion 4.2% Cash for the period Losses below regulatory levels (12 months) R$ 9.96 billion, 2.5x short-term debt 17.9% Covenants Equatorial Maranhão 3.1x Net Debt / EBITDA Losses Below Regul
Slide 4: Consolidated Financial Performance
CONSOLIDATED FINANCIAL PERFORMANCE
Slide 5: 2Q26 Economic and Financial Performance
RESULTS PRESENTATION Macro Index IPCA: 4.64% SELIC: 14.25% IGP-M: 3.16% 2Q26 | Economic and Financial Performance 12 months Adjusted Results R$ Million Debt and Covenants R$ Billion +7.7% 50 4 +0.8% EBITDA +4.1% Ex-Sabesp 504 40 3.1x 3,1x TERM AND AVERAGE COST 369 2,901 2,925 3 5.6 years | 14.15% p.
Slide 6: Distribution
DISTRIBUTION
Slide 7: 2Q26 Distribution
RESULTS PRESENTATION Macro Index IPCA: 4.64% SELIC: 14.25% IGP-M: 3.16% 2Q26 | Distribution 12 months Operational Financial Gross Injected (2Q25 vs 2Q26) Adjusted Gross Margin R$ Million 18,143 +4.7% +10.4% 18,994 (+393) Wire B Market (2Q25 vs 2Q26) 3,772 4,166 131 23 32 -10 93 10 114 13,923 +4.2% 1
Slide 8: Other Segments
GRUPO equaterial OTHER SEGMENTS
Slide 9: 2Q26 Other Segments
RESULTS PRESENTATION 2Q26 | Other Segments Sanitation Renováveis Renewables Adjusted EBITDA EBITDA - Echoenergia (Echo Par + Echo Cresc.) R$ Million R$ Million -22.6% -10.4% 174.8 7.3 AVERAGE WATER AND SEWAGE TARIFF 135.3 6.6 2Q25 2Q26 R$ 4.04 R$ 4.96 2Q25 2Q26 2Q25 2Q26 Constrained-off Impact since
Slide 10: 2Q26 Future Outlook
RESULTS PRESENTATION 2Q26 | Future Outlook Copasa Next Steps Continued Operating Cost 1 Extraordinary Shareholder’s Meeting (EGM) and 4 Discipline Acquisition Refinancing Tariff Reviews 2 CEEE-D and CEA Tariff Reviews 5 Operational Quality Improvement Investments: CEEE-D: R$3.47bn and CEA: R$992m Ac
Slide 11: Q&A
GRUPO equaterial Q&A 2Q26
Slide 12: ri@equatorialenergia.com.br
ri@equatorialenergia.com.br