Centrais Eletricas de Santa Catarina S A : 4Q22 Release*

DISCLAIMER

This document has been prepared by Centrais Elétricas de Santa Catarina - Celesc S.A. to indicate the Company's overall situation and its business development. The document belongs to Celesc and should not be used for any other purpose without the Company's prior written authorization.

The information contained in this document related to business prospects, projected operating and financial results, and Celesc's growth outlooks are merely projections and, as such, are exclusively based on the Executive Board's expectations. These expectations crucially depend on market conditions, Brazil's economic performance, the industry, and international markets and, therefore, are subject to change.

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CONTENTS

OPERATING AND FINANCIAL HIGHLIGHTS ................................................................................ 4

RESULTS SUMMARY ................................................................................................................... 4

1. RELEVANT EVENTS ............................................................................................................... 5

2 CELESC GROUP ........................................................................................................................ 6

2.1 Corporate Profile ........................................................................................................... 6

3. PERFORMANCE BY SEGMENT .................................................................................................. 8

3.1. Celesc Distribuição S.A ................................................................................................. 8

3.1.1. Company's Profile ...................................................................................................... 8

3.1.2. Economic and Financial Performance ............................................................................ 8

3.2. Celesc Geração S.A . .................................................................................................... 30

3.2.1. Company's Profile .................................................................................................... 30

3.2.2. Economic and Financial Performance .......................................................................... 32

3.2.3. Operational Performance ........................................................................................... 40

3.3. CONSOLIDATED ......................................................................................................... 42

3.3.1. Economic and Financial Performance .......................................................................... 42

4. 2022 TARIFF ADJUSTMENT .................................................................................................. 49

5. SUSTAINABLE DEVELOPMENT .............................................................................................. 50

5.1 Environmental ............................................................................................................. 50

5.2 Social .......................................................................................................................... 51

4.3 Governance ................................................................................................................. 53

6. CAPITAL MARKET PERFORMANCE ........................................................................................ 55

7. CORPORATE RATING ............................................................................................................ 56

8. EXHIBITS ............................................................................................................................. 57

• 8.1 Financial Statements ................................................................................................... 57

• 8.2 Relevant Events .......................................................................................................... 66

OPERATING AND FINANCIAL HIGHLIGHTS

R$855.6M (9M22)

R$437.2M (9M22)

Annual TariffReadjustment

Average effect of

11.32%

(2022/2023 cycle)

PMOO

R$274.5M (3Q22) R$750.0M (9M22)

RESULTS SUMMARY

Net Operating Income R$2.5B (3Q22) R$7.5B (9M22)Consolidated Investment R$371.4M (3Q22) R$967.4 M(9M22)

Company Shares 3.08% (3Q22) -9.31% (12 months)

Financial Indicators - Consolidated (R$ Million)

Operational Indicators

Celesc Distribuição - Total Billed Energy (GWh)

Celesc Geração - Billed Energy (GWh)

Gross Operating Income Net Operating Income

Net Operating Revenue (Excluding Construction Revenue)

Operating Costs and Expenses

Operating Costs and Expenses (excluding Construction Costs)

EBITDA (IFRS)

EBITDA Margin (IFRS)

Adjusted EBITDA (non-recurring) Adjusted EBITDA Margin, excluding Construction Revenue (%)

Net Income (IFRS)

Net Margin (IFRS)

Net margin - ex-construction revenue Adjusted net profit (non-recurring)

Adjusted Net Margin, excluding Construction Revenue (%) Investments in Generation and Power Distribution

1. RELEVANT EVENTS1

•  Celesc achieves certification in the Great Place to Work

•  Celesc and ESG

•  Celesc is elected the best distributor of the South region

•  Annual Tariff Adjustment - Celesc D

•  Digital Transformation Week encourages a new culture at the Company

•  Inauguration of the Itapema Meia Praia Substation (SE)

•  Celesc activates LD Ratones 138 kV

•  Energy Efficiency Project approved by ANEEL will benefit seven hospitals in Santa Catarina

•  Distribution of Interest on Equity (IoE)

1 Further information on the main events of the period can be found in the Exhibits section in the end of this document.

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