Star Peak Energy Transition Corp. and Stem, Inc. Announce Registration Statement Effectiveness and April 27, 2021 Scheduled Special Meeting to Approve Business Combination

EVANSTON, Ill.--(BUSINESS WIRE)--Star Peak Energy Transition Corp. (NYSE: STPK), a publicly traded special purpose acquisition company (“Star Peak”), and Stem, Inc., a global leader in artificial intelligence (AI)-driven clean energy storage systems (“Stem”), today announced that Star Peak’s registration statement on Form S-4 (File No. 333-251397), relating to the previously announced merger of Star Peak and Stem, has been declared effective by the U.S. Securities and Exchange Commission. Star Peak will mail Stockholders as of March 4, 2021 the definitive proxy statement/consent solicitation/prospectus relating to the Special Meeting of Star Peak Stockholders (the “Special Meeting”).