The U.S. energy storage market set a new record in the fourth quarter of 2021, with new system installations totaling 4,727 MWh.
According to Wood Mackenzie, a Verisk business, and the American Clean Power Association’s (ACP) latest “U.S. Energy Storage Monitor” report, Q4 2021 saw more capacity installed than in the first three quarters combined, despite project delays.
Residential storage had its strongest quarter to date with 123 MW installed, beating the previous quarterly record of 110 MW in Q1 2021. Increasingly effective solar + storage sales in markets outside of California helped establish the new quarterly benchmark and resulted in a national annual total of 436 MW.
By 2026, annual installations in the residential segment are expected to hit 2 GW/5.4 GWh, with frontrunners in California, Puerto Rico, Texas, and Florida leading that market segment.