This represents a 132% increase year-over-year and an 8% jump quarter-over-quarter. Most of the growth was driven by California, Arizona, and Illinois, as attachment rates hit new highs and higher-capacity systems. . The residential storage market expanded 608 megawatts (MW) in Q2. Following a low second quarter, the industry is ramping up as the end of. . Houston/WASHINGTON, D.C., September 26, 2025 — The U.S. energy storage market set a record for quarterly growth in Q2 2025, with 5.6 gigawatts (GW) of installations, according to the latest U.S. Energy Storage Monitor report released today by the American Clean Power Association (ACP) and Wood. . We expect 63 gigawatts (GW) of new utility-scale electric-generating capacity to be added to the U.S. power grid in 2025 in our latest Preliminary Monthly Electric Generator Inventory report. This amount represents an almost 30% increase from 2024 when 48.6 GW of capacity was installed, the largest.
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