Slides
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Corporate Presentation 2026 CART * COPEL Pura Energia Photo : Caxias Hydroelectric Plant
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COPEL | 2026 | Corporate Presentation 2 Disclaimer Any statements made during this conference call regarding Copel’s business outlook, projections, and operational and financial targets are based on the beliefs and assumptions of the Company’s management, as well as on information currently available. Forward-looking statements are not guarantees of performance; they involve risks, uncertainties, and assumptions, as they refer to future events and, therefore, depend on circumstances that may or may not occur. General economic conditions, industry conditions, and other operational factors may affect Copel’s future performance and may lead to results that differ materially from those expressed in such forward-looking statements.
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COPEL | 2026 | Corporate Presentation 3 Slide 4 Slide 11 Slide 18 Summary 04 11 18 38 47 24
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COPEL | 2026 | Corporate Presentation 4 Copel At a Glance
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COPEL | 2026 | Corporate Presentation 5 Notes: (1) Leverage as of June 30, 2026. (2) Reference date: July 30, 2026. (3) Segment contribution to recurring Ebitda for June 2026 (LTM). (4) Municipality of Porto União in Santa Catarina. * LTM: database as of June 26 Copel: an integrated electric utility Revenue Operating R$26.5 billion Recurring Ebitda (21.6% margin) R$6.1 billion Leverage(1) 2.9x Market Cap(2) R$44.2 billion Recurring Net Income (8.8% margin) R$2.1 billion 4th Largest Brazilian DisCo with a concession until 2045 5.3 million consumers 194,000 km2 Concession Area Long-term Assets R$1.9 billion RAP Cycle 26/27 9.7k km Transmission lines Synergistic business model with strategic and operational integration 1.5k consumer Top 10 among energy traders in Brazil DisCo Electric grid: 71% of Ebitda(3) Transmission 64% of the concession renewed for 30+ years 100% renewable portfolio 6,226 MW Installed capacity GenCo TradeCo Energy market: 29% of Ebitda(3) Hydroelectric Wind Transmission Line Substation Distribution(4) Financial Highlights LTM*
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COPEL | 2026 | Corporate Presentation 6 COPEL | 2026 | Apresentação Corporativa 6 Copel Distribuição: Brazil’s fourth-largest DisCo, with a concession through 2045 | Copel: Energy consumption growth surpasses the national average Brazil’s GDP Energy Consumption - Brazil Energy Consumption - Copel | Quality KPIs: DEC (Equivalent Duration of Interruption per Consumer Unit) | Quality KPIs: FEC (Equivalent Frequency of Interruption per Consumer Unit) (hours) (%) Regulatory Limit DEC Copel Brazil Regulatory limit FEC 4º Brazil’s highest GDP An economy growing 1.5 times faster than Brazil’s GPD (last 10 years) 4º in HDI in Brazil (0.822 vs. 0.805 for Brazil) Per capita GDP 7.8% higher than the national average (R$ 64,351 vs. R$ 50,687 in Brazil) Ranked 3rd in the national ranking of agribusiness exporters Concession in the State of Paraná | RAB (R$ billion) +71.4% | Delinquency (5 bps) | Energy sold in the concession area(1) (GWh) CAGR +2.1% (vs. 2.0% S/SE) | Change in the number of consumers (million) ¹Includes the billled grid market, accounting for the impact of distributed micro and mini-generation 395 municipalities in the concession area 404 substations 219,421 km of distribution lines 194,336 km concession area 5.3 million consumers +19.9 CAGR +2.0% +136.9% Notes: According to 2021-2024 data. 49% Recurring Ebitda Jun/26 (LTM)
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COPEL | 2026 | Corporate Presentation 7 COPEL | 2026 | Apresentação Corporativa 7 Copel Transmissão: a comprehensive transmission platform with long-term concessions TRANSMISSION 100% INTEGRATED INTO THE NATIONAL GRID 1Annual Permitted Revenue, considering equity interests. 2Reflects the weighted average of concession contracts for Cycle 26/27 of the RAP. R$1.9 billion RAP Cycle1 26-27 96% RAP¹ renewed for 15 years 9.7k km of transmission lines 8 states 18 years² of remaining concession term Upgrades and improvements in transmission: high return on investment with no competition— potential for R$ 1.5 billion in Capex over the next 9 years | RAP Growth1 (km) | Remaining RAP1 : maturity by 2046 (%) 7 concessions expiring 3 concessions expiring 5 concessions expiring Average remaining concession term of 18 years2 22% Recurring Ebitda Jun/26 (LTM)
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COPEL | 2026 | Corporate Presentation 8 COPEL | 2026 | Apresentação Corporativa 8 19% Wind Power CURITIBA GOV. JOSÉ RICHA HYDROELECTRIC PLANT 1,240 MW GOV. NEY BRAGA HYDROELECTRIC POWER PLANT 1,260 MW GOV. BENTO MUNHOZ Hydroelectric Plant 1,676 MW GOV. PARIGOT DE SOUZA HPP 260 MW ARTURO ANDREOLI SMHP 10 MW SANTA CLARA 84 MW JORDÃO RIVER DIVERSION 6.5 MW BELA VISTA SMALL HYDROPOWER PLANT 30 MW JAYME CANET JÚNIOR (MAUÁ) HPP 361 MW FUNDÃO 84 MW PR GenCo: 100% renewable portfolio, with 64% of the concession renewed for more than 30 years 100% renewable portfolio RN OWN EQUITY Wind farms 1 Includes assets with equity interests. 2 Includes installed capacity from other equity investments. RS DONA FRANCISCA HYDROELECTRIC PLANT 29 MW | Breakdown by source (2Q26)1 6,226 MW 6,615 6,967 6,967 6,226 (MW) Copel Geração Coverage1 6,967 6,226 1.2 GW Installed capacity 46 Installments 81% Hydro 5.1 GW Installed capacity 13 Power plants | Change in Installed Capacity in Operation1, 2 Divestment of UEGA, consolidating the portfolio 100% renewable 29% Recurring Ebitda Jun/26 (LTM))
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COPEL | 2026 | Corporate Presentation 9 198.99 224.70 Integrated portfolio Low transaction costs P-mix (R$/MWh) 37 % 63 % TradeCo: a strategic and integrated operation with a synergistic business model 207.96204.88 Trading | Energy Balance (Hydro + Wind) | Hydroelectric Power Availability1 | Distribution of Sales in the Open Market 1H26Over 70 years Operations in the energy market 13,268 GWh sold in 1H26 1,519 contracts Among the 10 largest energy traders in Brazil Low cumulative delinquency rate (only 0.01%) 28% 72% B2B B2C Availability 2026 2027 2028 2029–2030 Hydroelectric (%)1 20% 28% 44% 78% SalesAvailability 1 Does not include: (i) Allocations from HPP GPS (73 MWavg) (ii) 96% of the contract volume for HPP Mauá (or 184 MWavg), which is the hedged amount for GSF fluctuations.
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COPEL | 2026 | Corporate Presentation 10 (*) Solid financial performance: long-term revenue and growing profitability | Recurring Ebitda (R$ billion) | Net income and dividend distribution | Capex (R$ billion) | Net debt and leverage (1) Includes only continuing operations. *Including the premium paid for the transition to the Novo Mercado. ¹Excludes investment in asset swap ²Considers the budget supplement for investments related to LRCAP (1) (2) (¹)
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COPEL | 2026 | Corporate Presentation 11 Strategic Overview and Recent Results
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COPEL | 2026 | Corporate Presentation 12 Excellence Operational Expansion Strategic waves to drive a sustainable future Structural efficiency 12 Strategic Planning for 2035 Copel’s Management Model InnovationGrowth (organic and inorganic) Talent Attraction and Retention Optimal Capital Structure DisCo tariff adjustment [B]’s Novo Mercado3 Concession Renewals (hydroelectric plants) Decarbonization of the Energy Mix Cost Reduction Portfolio Optimization
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COPEL | 2026 | Corporate Presentation 13 COPEL | 2026 | Apresentação Corporativa 13 New Market Start of trading exclusively in common stock (12/22/2025) Copel reached the highest standard of corporate governance from [B]³ Sustainability Financial leverage of 2.9x (Net Debt/Ebitda) Tolerance range between2.6x and 3.2x (corresponding to +/- 0.3x of the new target) over 48 months Dividends and Growth Minimum distribution of 75% of net income Dividends paid at least twice a year Optimal Capital Structure Dividend Policy Strategic Advances | 2025/2026 Strategic Planning R$ 18 billion over 5 years Disco: R$ 13.5 billion; Genco: R$ 1.9 billion; and Transmission: R$ 1.8 billion + 12 GW of hydroelectric plants in the process for renewal 5 distribution concessions to be renewed M&A opportunitiesMulti-year investment
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COPEL | 2026 | Corporate Presentation 14 2026: LRCAP – Capacity Reserve Auction Strengthens the Implementation of the Company’s High-Value Creation Strategy Note: Photo of the Segredo Hydroelectric Plant. Strategic expansion of the generation portfolio Significant and sustainable economic impact Pipeline of over 4 GW for future auctions Driving the 2035 Strategy
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COPEL | 2026 | Corporate Presentation 15 Copel Wins Capacity Reserve Auction (LRCAP) with Two Hydroelectric Plants Note: Map of the state of Paraná Foz do Areia HPP1 1 2 Segredo HPP (GOV. NEY BRAGA) 1,260 MW + 1,266 MW FOZ DO AREIA HPP (GOV. BENTO MUNHOZ) 1,676 MW + 860 MW PR Installed capacity 1,676 MW 2,536 MW+ 860 MW Physical Guarantee 568 MW average 588 MW average+ 21 MWavg Installed Capacity 1,260 MW 2,526 MW+ 1,266 MW Physical Guarantee 553 MW average 609 MW average+ 56 MWm Segredo HPP2 Note: Figures are subject to rounding 8th Largest hydroelectricplant 9th Largest hydroelectricplant
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COPEL | 2026 | Corporate Presentation 16 Available installed capacity for LRCAP (MW)¹ 690.470 1,172.344 Physical Guarantee of Expansion (Mwavg)2 20.6 56.3 Power generation term 15 years 15 years Estimated start of operations August 2030 August 2030 Contracted gross price (thousand R$/MW/year)3 R$ 1,395.00 R$ 1,395.00 Estimated investment (R$ billion) R$ 1.3 R$ 3.6 Estimated leverage 70% 70% Transmission System Usage Fee – TUST (R$/MW/month)4 R$ 5.75 – R$ 6.10 R$ 6.73 – R$ 7.19 Key asset modeling indicators for the Capacity Reserve Auction 1Total installed capacity adjusted by the Capacity Availability Factor (FDispCap) for the Segredo project and by the Reference Storage for the Foz do Areia project. 2 Energy available for sale on the ACL. 3 Amount to be adjusted annually based on the IPCA index, with a reference date of September 2025. 4 Amount to be updated annually in accordance with changes in the IPCA and/or IGPM indices, with a reference date of June 2025 and calculated based on the project’s total installed capacity, which is 860 MW for Foz do Areia and 1,266 MW for Segredo. FOZ DO AREIA HPP Segredo HPP
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COPEL | 2026 | Corporate Presentation 17 Balance between dividends, flexibility and growth Minimum payout: 75% of Net Income Leverage range: 2.6x – 3.2x Convergence within 48 months Minimum frequency Twice a year ...optimization of equity value... ...consistent capital allocation Leverage (Net Debt/Ebitda) Probability (%) DELEVERAGING CONTRACTED OPTIMAL CAPITAL STRUCTURE DIVIDEND DIVIDEND POLICY New Compensation Framework and LRCAP | RTP – Regulatory Ebitda¹ | LRCAP – Capex 2026-2030 (R$ billion) (R$ billion) ² Estimated amount for the year ³ Cumulative amount for the LRCAP expansion project ¹ Return on Capital (WACC) + Regulatory Depreciation (QRR), discounted to June 2026
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COPEL | 2026 | Corporate Presentation 18 Investment Thesis
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COPEL | 2026 | Corporate Presentation 19 out-22 dez-22 fev-23 abr-23 jun-23 ago-23 out-23 dez-23 fev-24 abr-24 jun-24 ago-24 out-24 dez-24 fev-25 abr-25 jun-25 ago-25 out-25 dez-25 fev-26 abr-26 jun-26 CPLE3 IBOV IBOVIEE Consistent Value Creation Material Fact – Announcement of the Intention to Privatize Privatization of Copel New Capital Structure and Dividend Policy Announcement of the transition to the Novo Mercado 176% (CPLE3) 48% (IBOV) 64% (IEE) COPEL | 2026 | Corporate Presentation Note: As of June 30, 2026. Completion of the migration to the Novo Mercado Share Buyback of Copel shares
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COPEL | 2026 | Corporate Presentation 20 PMSO Optimization * Figures updated through December 2025, considering an inflation rate of 4.71%. R$ million 20252023 2,856 2,843 3,254* -183* -131* -84* DisCoOthers GenCo Includes: – Compagas/UEGA Excludes: – Payment of one-third of a salary as vacation pay – Long-Term Incentive Plan (ILP) – PDI/PDV – CFURH/TFSEE ASSUMPTIONS 12 months through June 2023 Actual 2023 Data 2023 Results (Updated) 2025 Results (Updated) INFLATION 2,857*
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COPEL | 2026 | Corporate Presentation 2121 The shift from Cost Cutting to Efficiency ROIC KPI TRENDS FREE CASH FLOW VALUE CREATION
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COPEL | 2026 | Corporate Presentation 22 COPEL | 2026 | Apresentação Corporativa 22 Creating Value Over Time: Copel’s Virtuous Cycle Value compounding Operational efficiency Reinvestment in high-return projects Consistent returns Optimal leverage DEFINITION OF MINIMUM RETURN Minimum Rate of Return (MRR) Implicit IRR CPLE Discount Rate (Ke and WACC) Incorporated Risks: – Country – Market – Business – Activity (Distribution) - PRORET Incorporated Risks: – Shareholder Risk Perception Shareholder Risk Spread Project Risk Spread + Opportunity Cost Investment IRR > Implicit IRR
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COPEL | 2026 | Corporate Presentation 23 Positioned to capitalize on greater growth opportunities in the electric power sector ORGANIC GROWTH OPPORTUNITIES Source: ANEEL INORGANIC GROWTH OPPORTUNITIES Distribution TransmissionGeneration Marketing 5 Concessions will be renewed over the next 10 years +12 GW in hydroelectric power plant contracts expiring by 2035 Copel’s concessions are in one of Brazil’s states with the highest energy consumption Opportunity for consolidation among smaller players Organic growth in the sector remains significant, as energy consumption is expected to outpace GDP growth | Energy Consumption by State (GWh – 2021) | Energy Consumption (GWh) and GDP Growth 2024– 2034 | RAB Growth (R$bi) Robust platform with growing Capex, approaching RAB in 2026 Multiple M&A opportunities ~10,000 km of transmission lines expiring by 2035 LRCAP 2026 Operating profitably in a market with high growth potential… …places Copel in a privileged position for the next wave of market liberalization | Growth of the Brazilian Open Market in Consumers (‘000) Provisional Measure No. 1,304/2025 calls for the full liberalization of Brazil’s retail energy market by 2027, significantly expanding Copel’s addressable retail market Stable and predictable revenues Opportunities within the assets themselves 1. Consolidated trading desk 2. Extensive operational capacity 3. Expertise and Strong brand 4. Diversified client portfolio +1,266 MW 3 new turbines Segredo HPP +860 MW 2 new turbines FOZ DO AREIA HPP +71.4% + R$ 10.0 billion RTP in 2026 CAPEX INVESTED SINCE 2021 +67.5% +29.3% R$ 4.5 billion in RAP expiring by 2035 Fragmented market, with potential for consolidation Concessions maturing by 2035 (LT km) PET/PELP projects approximately R$ 30 billion in investments in new auctions over the next few years Between 2020 and 2025, 26 different groups won bids for lots, paving the way for consolidation 0 TWh 100 TWh 0 TWh Generation Market 100 TWh Maturing Accumulated +136.9% +19.9
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COPEL | 2026 | Corporate Presentation 24 Appendices Distribution 25 Compensation Strategy 34 Generation 27 Shareholder Structure 36 Organic Investment Cycle 30 Optimal Capital Structure and Dividend Policy 37
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COPEL | 2026 | Corporate Presentation 25 2026 Tariff Review ¹Data from the 2021 cycle updated through the 2025 RTA. • Recognized RAB: R$ 19.9 billion—the highest in DisCo’s history • Regulatory Ebitda: R$ 3.5 billion (+69% vs. RTA 2025) • No disallowance in the recognition of the asset base • Regulatory WACC: 12.30%/year (real, pre-tax) • Depreciation rate: 3.88%/year • Efficiency factor (X): 0.95% • Increase in recognition of losses compared to the last Tariff Adjustment • Rates among the lowest in Brazil (R$ 0.76/kWh for residential customers) Highlights of the review Financial breakdown Approval • Total revenue: R$ 17.9 bn. → Part A: R$ 12.2 bn. (68%) | Part B: R$ 5.7 bn. (32%) • Return on capital: R$ 2.5 billion (+73% vs. previous cycle¹) • Regulatory Depreciation (QRR): R$ 1.0 billion • Average rate adjustment: 20.51% (average impact on consumers) • Tariff Deferral requested: R$ 1.3 bn. (reduces rate impact by 8.26%) • June 23 – Aneel Board Deliberation Process • June 30 – Ratification at Aneel Public Meeting (TBD) (R$ billion) RAB History
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COPEL | 2026 | Corporate Presentation 26 Composition of the Required Revenue Distribution Tariff Review = + Part A (68%)1 (R$ 12.224 mi) (uncontrollable costs) Part B (25%) (R$ 5.721 mi) (controllable costs) Return on capital (R$ 2,530 mi) QRR (Depreciation of regulatory assets) OPEX CAIMI Other revenues (60% captured in rate moderation) ¹OE = Special obligations 1Note: 2026 rate review. Data based on the ANEEL rapporteur’s vote released on June 18, 2026. Rate (1÷2) Market Energy purchase Transmission Sector Charges Distribution + + + ÷ = 2 Regulatory Ebitda Current RAB Capex (electricity assets) Regulatory WACC (pre-tax) Regulatory Depreciation Rate Net Remuneration Base x x PMSO Non-electric assets 1 (R$ 1,005 mi) (R$ 2,238 mi) (R$ 423 mi) (-R$ 475 mi) (R$ 3,535 mi)
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COPEL | 2026 | Corporate Presentation 27 COPEL | 2026 | Apresentação Corporativa 27 Hydroelectric generation* 13Plants 5,045 MWInstalled capacity Physical guarantee 2,108 MW average Availability factor 98% 46Plants 1,182 MWInstalled capacity Physical guarantee 589 MW average Availability factor 92% *Included on a pro-rata basis among partners. 2Q26 data 100% renewable portfolio 27 Total 6,227 MW 2,697 MW average GenCo Availability factor ~95% 100% remote operation and centralized Wind *
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COPEL | 2026 | Corporate Presentation 28 Pumped-storage power plant - 70 MW (pilot project) Potential to be Brazil's first pumped-storage hydroelectric plant CAPEX ≈ R$ 400–450 MILLION Proposed authorization for implementation under review by EPE The 70-MW UHR project could be implemented along the coast of Paraná to meet a need in the transmission system, using an innovative approach that has a lower environmental impact compared to the alternative of a 500-kV transmission line crossing the Serra do Mar mountain range. CLOSED* - both reservoirs are artificial and disconnected from natural watercourses SEMI-OPEN* - there is a direct connection to natural bodies of water * Note: Adapted from RSG-ITT-RT-200-00-0001_RA (Intertechne, 2026).
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COPEL | 2026 | Corporate Presentation 29 Pumped-storage hydroelectric plants are Brazil’s battery: flexibility and power Which technology is winning the battle for energy storage? 2018 – 24 Installed capacity (GW) 2018 – 24 Capacity (GW) BESS Pumped-storage hydroelectric plant 20 hours 3 hours Storage (GWh) / Capacity (GW)
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COPEL | 2026 | Corporate Presentation 30 Organic investment cycle with attractive returns R$ 3.0 billion R$ 17.8 billion ARR IRR 2026 2026–2030 High return in Distribution Modernization of hydroelectric generation in the southern submarket Upgrades and improvements in transmission – attractive returns and low risk
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COPEL | 2026 | Corporate Presentation 31 COPEL | 2026 | Apresentação Corporativa 31 Distribution Investment Plan Capex 2026–2030 2.41 3.18 R$ million 50 new substations 88 Expansions +30 substation renovations 1,200 km of new high- voltage lines Ongoing and substantial investment in power grids RRB Vehicles, systems and facilitiesxRRQ Reference: Multi-year Capex approved on November 19, 2025
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COPEL | 2026 | Corporate Presentation 32 COPEL | 2026 | Apresentação Corporativa 32 Generation Investment Plan Capex 2026-2030 Hydroelectric Capex in 2026: R$ 183.3 million Wind Capex in 2026: R$ 76.2 million HydroelectricR$ 1.3 billion To modernize assets (R$ 894 mm) – Extending service life – Greater reliability Wind PowerR$ 419 million Maintaining optimal inventory levels (R$ 199 mm) – Increased availability – Reduced wait time
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COPEL | 2026 | Corporate Presentation 33 Expansions and improvements to the transmission investment plan ORGANIC GROWTH ASSOCIATED WITH REVENUE Projected Capex for the 2027–2030 period R$ 1.482 billion Projected investment for 2026R$ 449.8 million Authorized in recent yearsR$ 769 million
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COPEL | 2026 | Corporate Presentation 34 New Compensation Strategy: Merit in Practice Through a “Skin in the Game” Model – It encourages the achievement of results at all levels of the organization. – Incentives become more significant as you move up to the highest levels of the organization: alignment with company objectives and shareholder interests, rewarding consistent execution of the strategy. Long-Term Incentives (LTI) TENURE LEVEL Short-Term Incentives (STI) Base Salary Implementation C Level Leadership Employees LTI No change: – Performance Actions – TSR as a Performance Indicator – No “safety net” STI Structural changes that drive new behaviors – Same metric: Ebitda – Inclusion of a payment trigger – Standardization of compliance rules Results Achieved Shared results
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COPEL | 2026 | Corporate Presentation 35 50% + 50% = Index 50% + 50% = Index 50% + 50% = Index 50% + 50% = Index STRATEGIC GUIDELINES PRESIDENT VICE PRESIDENTS DIRECTORS SUPERINTENDENTS MANAGERS/TEAMS A new way to set goals for a new era Strategy translated into goals. Fostering a sense of ownership. Meritocracy combined with collaboration. DEVELOPMENT MONITORING Strategy Routine Final Formula: Trigger × Index Implementation Level 100% = Index
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COPEL | 2026 | Corporate Presentation 36 COPEL | 2026 | Apresentação Corporativa 36 Shareholder Base Composition 15.9% 18.6% FREE FLOAT60.0% 5.5% A company with widely held shares, no controlling shareholder (Corporation), and voting rights limited to 10% of the total voting shares | Shareholder Distribution Note: As of June 30, 2026. ²Excludes the State of Paraná and BNDES. 1Excludes the State of Paraná and BNDES. Note: As of April 30, 2026.
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COPEL | 2026 | Corporate Presentation 37 2.9x Leverage (Net Debt/Ebitda) Probability (%) 3.2X 2.9X 2.6X 24 months Time Horizon Leverage Probability Distribution of Equity Value Optimization Optimal capital structure: – Considers 78,000 different scenarios to create the sample space – The range from 2.6X to 3.2X represents approximately 95% of the equity value optimization scenarios – The optimal leverage resulting from the study is 2.9X Net Debt/Ebitda Dividend policy: Guideline: Dividends as a tool for achieving the optimal capital structure Parameters: – Minimum of 75% of Net Income; – Leverage benchmark of 2.9x with a margin of ±0.3x (3.2x – 2.6x) and convergence within 48 months Minimum payment twice a year
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COPEL | 2026 | Corporate Presentation 38 Results 2Q26
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COPEL | 2026 | Corporate Presentation 39 Consolidated recurring Ebitda rises 20.8% Ι Breakdown (R$ million) Ι Change (R$ million) DisCo’s Ebitda +34.5% R$ 196.3 million higher vs. 2Q25 GenCo’s Ebitda +10.1% R$ 76.8 mi higher vs. 2Q25 *Other adjustments: MTM and IFRS effect on transmission companies. *Includes Copel Serviços and Elejor’s Ebitda. COPEL | 2Q26 | 2Q26 Results 39 Holding -23.3% R$ 8.7 million loss vs. 2Q25 TradeCo’sEbitda +17.0% R$ 3.1 mi higher vs. 2Q25 Elejor’s Ebitda +70.8% R$ 12.1 million higher vs. 2Q25 Driven by operational performance and cost efficiency
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COPEL | 2026 | Corporate Presentation 40 GenCo Ι Recurring Ebitda (R$ million) Ι Recurring PMSO (R$ million) Electricity Costs: -R$ 6.4 million GSF 99.6% 2Q26 vs. 95.5% 2Q25 +R$ 85.1 mi in FCE Price: +6.4% Volume: -7.8% Electricity Grid Availability: +R$ 70.2 million Reduction of R$ 35.2 mi in earnings from MCP transactions Increased wind generation variance: -R$ 34.8 mi Curtailment: 23.7% in 2Q26 vs. 15.7% in 2Q25 -R$ 13.7 million (-6.3%) decline in PMSO Ebitda grows 10.1%, driven by higher average electricity sales prices and a favorable hydrological scenario COPEL | 2Q26 | 2Q26 Results * Excludes profit sharing, PPD, and ILP
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COPEL | 2026 | Corporate Presentation 41 DisCo Ι Recurring Ebitda Market growth and cost management drive Ebitda up 34.5% (R$ million) Ι Billed Grid Market (GWh) Ι Recurring PMSO (R$ million) T ariff adjustment for Part B of +1.3% (RTA/2025) 0.4% reduction in Recurring Manageable Costs (PMSO) Growth of +7.2% in the Billed Grid Market COPEL | 2Q26 | 2Q26 Results * Excludes profit sharing, PPD, and ILP
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COPEL | 2026 | Corporate Presentation 42 Commercial Strategy Drivers of the Company’s Results Ι Energy Mix (Hydro¹ + Wind) (P-MIX (R$/MWh)) Availability 2026 2027 2028 2029– 2030 Hydro (%)1 20% 28% 44% 78% 198.99 204.88 207.96 224.70 1 Excludes: (i) CCGF (Quotas) from GPS (73 MWavg); and (ii) 96% of the Mauá Hydroelectric Plant (or 184 MWavg) and its contracts, amount hedged against GSF fluctuations. Revenue from hydro modulation and submarket R$ 74.6 million Energy sales up +319% for 2027–2028 with P-MIX +6% (vs. hydropower sales in 1Q26) Reduced delinquency 0.01% Active portfolio management, focused on capturing market opportunities Ι Commercial performance – Focus on more targeted negotiations for 2027 – Low credit risk from sales on the open market – Leveraging favorable seasonal conditions: modulation and submarkets – Long-term availability aimed at market opportunities during upturns and protection as a natural hedge COPEL | 2Q26 | 2Q26 Results
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COPEL | 2026 | Corporate Presentation 43 Discipline in Execution: Optimized PMSO Aligned with the Pursuit of Efficiency Ι Recurrent PMSO Evolution (R$ million) +24.7% (R$ 5.4 mi) in Material and Materials and O&M +3.7% (R$ 10.3 mi) in Third-Party Services +4.3% (R$ 12.9 mi) Staff and management, including Social Security and Benefits -32.7% (R$ 35.1 mi) in Other, largely due to a decline in losses from asset decommissioning at DisCo and in the tax collection rate COPEL | 2Q26 | 2Q26 Results
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COPEL | 2026 | Corporate Presentation 44 Recurring Net Income Ι Recurring Net Income Strong Value Creation in 2Q26: Earnings Driven by Operational Performance and a Decline in the Effective Income Tax Rate (R$ million) Ι Change (R$ millions) Improved operational performance and cost efficiency | Ebitda +20.8% Lower effective income tax rate -R$ 251.4 million in financial results due to increased debt | reflects investment in assets to improve efficiency and regulatory revenue COPEL | 2Q26 | 2Q26 Results
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COPEL | 2026 | Corporate Presentation 45 Investments Ι Consolidated Capex 2Q26 Capex: Plan Execution and Focus on Quality Returns (R$ million) Ι Capex by Segment in 2Q26 ¹ Excludes investment in asset swaps. ² Takes into account the budget supplement allocated to investments related to the LRCAP 1 *Includes investments in LRCAP of ~R$ 318 million ²
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COPEL | 2026 | Corporate Presentation 46 Indebtedness Ι Leverage Comfortable leverage in line with the new parameters of the optimal capital structure (R$ million) Ι Debt Composition and Ratios *Excludes Equity Income, considers discontinued operations, and excludes the effects of impairment, Voluntary Separation Program pay, mark-to-market (MTM), GSF renegotiation, losses on asset decommissioning, and gains on asset swaps. Nominal cost of debt Jun/26: 12.92% p.a. (equivalent to 91.33% of the CDI) Jun/25: 13.54% p.a. (equivalent to 90.88% of the CDI) COPEL | 2Q26 | 2Q26 Results
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COPEL | 2026 | Corporate Presentation 47 Results 2025
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COPEL | 2026 | Corporate Presentation 48 Ι Breakdown of Recurring Ebitda * Holding Company, Services, Elejor, and Eliminations and Reclassifications 1 Recurring Ebitda excludes Equity Income, the effect of New Replacement Value (VNR) on indemnifiable assets, the IFRS adjustment to broadcasters’ revenue, and adjustments for impairment and mark-to-market effects. R$ 5.5 billion in recurring Ebitda¹ (R$ million) (R$ million) * Holding Company, Services, Elejor, and Eliminations and Reclassifications Ι Change from the previous period Reflecting the strength of an integrated company with a diversified portfolio
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COPEL | 2026 | Corporate Presentation 49 (R$ million) 1Headcount adjusted for PLR, PPD, and ILP provisions (R$ million) Generation Sales GenCo (GWm) Ebitda up 15.0%, driven by improved performance and asset acquisitions Ι Recurring Ebitda Ι Power generation and sales Ι Recurring PMSO
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COPEL | 2026 | Corporate Presentation 50 1Headcount adjusted for PLR, PPD, and ILP provisions DisCo Recurring Ebitda increased by 5.4%, reinforcing operational strength (R$ million) Ι Recurring Ebitda (GWh) Ι Billed Grid Market (R$ million) Ι Recurring PMSO
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COPEL | 2026 | Corporate Presentation 51 TradeCo's marketing strategy is driving the company's profits – Balance between long-term investments and market exposure – Active portfolio management increases flexibility and resilience – Unhedged position to capture bull cycles and provide a natural hedge – 2026: A robust position for adverse scenarios and pricing opportunities Availability 2026 2027 2028 2029–2030 Hydroelectric (%)2 19% 31% 42% 71% 1 The Mauá Hydroelectric Plant has GSF insurance covering 96% of the Physical Guarantee;2 MWm is not considered within the scope of the quota system. 195.90 196.62 203.63 223.20 Ι Trading Strategy Ι Recurring Ebitda (R$ million) Ι Energy mix (Hydro¹ + Wind) (P-MIX (R$/MWh))
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COPEL | 2026 | Corporate Presentation 52 ¹Excludes the effects of PLR, PPD, and ILP ²Excludes nonrecurring losses from the decommissioning or disposal of assets * PLR – profit sharing, PPD – performance bonus, ILP – long-term incentive 14.7% reduction in staff and management costs... Ι Recurring PMSO Trends (R$ million) Ι Breakdown of PMSO
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COPEL | 2026 | Corporate Presentation 53 Ι Recurring net income ...a -1.6% change in consolidated net income (recurring) Ι Change (R$ million) (R$ million) * Includes Depreciation and Equity Income
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COPEL | 2026 | Corporate Presentation 54 *Excludes investment in asset swap in the amount of R$ 196.6 million * Historical Capex: strong concentration of investments in our distribution network, with a focus on revenue base, efficiency and quality (R$ million) * Ι Consolidated Ι Capex by segment
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COPEL | 2026 | Corporate Presentation 55 Indebtedness – comfortable leverage aligned with the optimal capital structure Ι Leverage Ι Debt Composition and Ratios
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COPEL | 2026 | Corporate Presentation 56 INVESTOR RELATIONS ri@copel.com | ri.copel.com (41) 3331-4011 www.tradeco.com /copel /company/copel