Page 1

As filed with the Securities and Exchange Commission on April 19 , 2021 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , DC 20549 FORM 20 - F ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 Commission file number : 001-14668 COMPANHIA PARANAENSE DE ENERGIA - COPEL ( Exact Name of Registrant as Specified in its Charter ) Energy Company of Paraná ( Translation of Registrant's Name into English ) The Federative Republic of Brazil ( Jurisdiction of Incorporation or Organization ) Rua Coronel Dulcídio , 800 80420-170 Curitiba , Paraná , Brazil ( Address of Principal Executive Offices ) Daniel Pimentel Slaviero +55 41 3331 4011 - ri@copel.com Rua Coronel Dulcídio , 800 , 3rd floor – 80420.170 Curitiba , Paraná , Brazil ( Name , telephone , e - mail and / or facsimile number and address of company contact person ) Securities registered or to be registered pursuant to Section 12 ( b ) of the Act : Title of Each Class Trading Symbol ( s ) Name of Each Exchange on Which Registered N / A Preferred Class B Shares , without par value * American Depositary Shares ( as evidenced by ELP New York Stock Exchange New York Stock Exchange American Depositary Receipts ) , each representing one Preferred Class B Share * Not for trading , but only in connection with the listing of American Depositary Shares on the New York Stock Exchange . Securities registered or to be registered pursuant to Section 12 ( g ) of the Act : None Securities for which there is a reporting obligation pursuant to Section 15 ( d ) of the Act : None Indicate the number of outstanding shares of each of the Issuer's classes of capital or common stock as of December 31 , 2020 : 1,450,310,800 Common Shares , without par value * 3,267,520 Class A Preferred Shares , without par value * 1,282,975,430 Class B Preferred Shares , without par value * * Does reflect the share split that occurred on March 11 , 2021 . Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes [ X ] No [ _ ] If this report is an annual or transition report , indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 . Yes [ ] No [ X ] Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes [ X ] No [ ] Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . N / A