TOP 25 operational battery energy storage projects in the US 2025

Discover the Power Behind America's Energy Storage Boom — In our latest market report, we unveil our 2025 ranking of the Top 25 operational battery energy storage systems (BESS) in the United States. Backed by fresh data from Cleanview, Wood Mackenzie, and the EIA, this white paper offers critical insights into the projects, players, and trends shaping the nation’s fast-expanding BESS landscape. From California’s hybrid solar-storage giants to Arizona’s rising influence and Texas’ pure-play installations, this is your go-to guide for understanding where the biggest batteries are — and who’s behind them. Whether you’re an investor, developer, or energy strategist, this digestible yet data-rich overview captures the scale, momentum, and future direction of utility-scale storage in the U.S.