 BUENOS AIRES, Argentina, April 30, 2021 PRNewswire -- Pampa Energía S.A. NYSE: PAM; Buenos Aires Stock Exchange: PAMP Pampa or the Company, the largest independent energy integrated company in Argentina, with participation in the electricity and gas value chain, announces today it has filed its annual report on Form 20-F for the fiscal year ended December 31, 2020 the 2020 Annual Report before the U.S. Securities and Exchange Commission the SEC. 