The largest upcoming BESS projects in US, including Darden Battery Energy Storage System, Copper Rays BESS Project, Swiftsure Battery Energy Storage System, Vistra Energy's Morro Bay Project, and NextEra Energy Resources's Roadhouse Project, support the. The largest upcoming BESS projects in US, including Darden Battery Energy Storage System, Copper Rays BESS Project, Swiftsure Battery Energy Storage System, Vistra Energy's Morro Bay Project, and NextEra Energy Resources's Roadhouse Project, support the. In 2025, utility-scale battery storage is projected to expand by a record 18. These systems play a crucial role in balancing supply and demand, enhancing grid stability, and supporting the integration of renewable energy. By storing energy from both renewable sources, such as solar and wind, and the conventional power grid, BESSes balance supply and demand, stabilizing power. 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. Quick Answer: What is a. After a historic 2025, when global BESS capacity surpassed 250 GW and overtook pumped hydropower, momentum is set to accelerate in 2026.