PLEASE NOTE: ESA is now part of the American Clean Power Association (ACP). This website material is not regularly updated and is for archival and reference purposes only. Please visit for more information.

ESA Merging with ACP

The U.S. Energy Storage Association (ESA) is merging into the American Clean Power Association (ACP), effective January 1, 2022. This merger follows the unanimous recommendation from both the ACP and ESA Board of Directors and overwhelming approval of ESA’s voting members. (Read the press release here.)

This step will ensure our members have the resources and support they need to attain ESA’s vision of 100 GW of new energy storage by 2030, and build a best-in-class trade group that is nimble, effective and able to represent the renewable energy and energy storage industries with a unified voice. 

We are excited to bring together our organizations’ resources to expand and strengthen energy storage advocacy, education, research and networking programs. ESA members can log in to the ESA Member Portal to view FAQs and other helpful info in the member portal. To learn more about ACP, visit

Please contact if you are not able to log in to the ESA Member Portal.

For additional questions around the merger, please contact

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