CPFL Energia S A : Notice to Shareholders - Declaration of Dividends

Uso Público CPFL

CPFL ENERGIA S.A.

Publicly-held Company

Corporate Taxpayer's ID (CNPJ) No. 02.429.144/0001-93 -

Corporate Registry ID (NIRE) 353.001.861-33

NOTICE TO SHAREHOLDERS

CPFL Energia S.A. ("CPFL Energia" or "Company") (B3: CPFE3) hereby informs its shareholders and the market that at the meeting of the Board of Directors (BoD), held on August 10th, 2023, at xx10:00 ap.m., among other matters, the declaration and distribution of complementary dividends was approved by the Company, in the amount of R$ 902,627,837,13 (nine hundred and two million, six hundred and twenty-seventhousand, eight hundred and thirty-sevenreais and thirteen cents), equivalent to R$ 0.783358090 per common share issued by the Company.

The payment of dividends will be made until December 31st, 2023, in a specific date to be informed in due course to the shareholders and to the market, without monetary update or incurring interest between the declaration date and the effective payment date.

We remind you that shareholders owning shares on August 17th, 2023 arewill beentitled to receive the dividends. Shares willerebe traded "ex-dividend" at the Brazilian Stock Exchange (B3 S.A. - Brasil,

Bolsa, Balcão, or "B3") as of August 18th, 2023.

For the shareholders holding shares deposited with Banco do Brasil, the financial institution responsible for the Company's bookkeeping of shares, the amounts will be credited through their bank accounts, according to the shareholders registration details on the registry of Banco do Brasil.

The payments related to shares deposited with B3's depositary will be credited to such entity and the Custodian Institutions will be responsible for transferring them to the respective shareholders.

Registration Update:

We also remind shareholders of the importance of updating their registration data, so that the payment of dividends can be effected. Find below the necessary procedures for those included in this case:

• Shareholders with shares deposited with Banco do Brasil: these shareholders should go to a branch of such bank, in order to update the registration, to sign the receipt option term ("termo de opção de recebimento"), which indicates the bank, the current account and the bank branch for depositing the credits, and will acknowledge the conditions of the type of credit involved (DOC/TED/CASH). They should also take to the bank the following original documents: ID card (RG), individual taxpayer's ID (CPF) and proof of residence, income and bank account and, if applicable, the document evidencing the unblocking of shares;
• Shareholders with shares deposited with CBLC: these shareholders should request their registration update directly from the custodial agent with whom they normally operate and also update their registration at Banco do Brasil.

Campinas, August 10th, 2023.

CPFL Energia S.A.

Yuehui Pan

Chief Financial and Investor Relations Officer