Companhia Paranaense de Energia COPEL : Notice to Debenture Holders - Fulfillment of the Step Down Condition of the Rate of the First Series of the 6th Debenture Issue

NOTICE TO DEBENTURE HOLDERS

COMPANHIA PARANAENSE DE ENERGIA - COPEL

CNPJ/ME 76.483.817/0001-20 - NIRE 41300036535 - Registro CVM 1431-1

B3 (CPLE3, CPLE5, CPLE6, CPLE11)

NYSE (ELP)

LATIBEX (XCOP, XCOPO, XCOPU)

Fulfillment of the Step Down Condition of the Rate of the

First Series of the 6th Debenture Issue

Companhia Paranaense de Energia - COPEL ("Company"), a company that generates, transmits, distributes and trades energy, hereby informs the debenture holders of the 6th (sixth) Issue of Unsecured Simple Debentures Not Convertible into Shares, with Additional Personal Guarantee, in Two Series, for Public Distribution, with Restricted Efforts, of Copel Distribuição S.A. ("Debenture Holders", and "6th Debenture Issue") that on May 19, 2022, its full replacement Copel Distribuição S.A. obtained registration as a Category "B" publicly-held company with the CVM.

Accordingly, the Company informs that the Spread of the First Series applicable as of the next Capitalization Period will be equivalent to one hundred percent (100%) of the accumulated variation of the average daily DI (Interbank Deposits) rates, "over extra group", expressed as an annual percentage based on a calendar year of two hundred and fifty-two (252) business days, calculated and published daily by B3 S.A. - Brasil, Bolsa, Balcão, on its daily newsletter, available on its website (http://www.B3.com.br), plus a spread of one point seventy-five percent (1.75%) per year, based on a calendar year of two hundred and fifty-two (252) business days, on the Face Value of First Series Debentures or balance of the Face Value of First Series Debentures, as applicable, from the First Payment Date or from the immediately previous Payment Date of First Series Debentures Remuneration (as defined below), as applicable.

Moreover, the Company, the Trustee, and the Guarantor executed the second amendment to the "Indenture of the 6th (sixth) Issue of Unsecured Simple Debentures Not Convertible into Shares, with Additional Personal Guarantee, in Two Series, for Public Distribution, with Restricted Efforts, of Copel Distribuição S.A." ("Indenture"), to reflect the Adjusted Spread of the First Series of the 6th Debenture Issue.

The terms capitalized in singular or plural, not otherwise defined in this Notice, shall have the meanings attributed to them in the Indenture, even after their use.

Curitiba, June 30, 2022.

Ana Letícia Feller

Chief Corporate Management Officer acting as Chief Financial and Investor Relations Officer

For further information, please contact the Investor Relations team:

[e-mail] or [phone]