US Battery Storage Market Shatters Records With 20.2 GWh Q2 Deployment

The US battery storage market installed an unprecedented 20.2 GWh of new capacity in Q2 2026, pushing first-half additions to 30.8 GWh. Utility-scale projects drove the massive expansion with 18 GWh of installations, heavily concentrated across Arizona, Texas, and California. Residential home battery installations plummeted 27% year-over-year to 657 MWh following the expiration of the federal 25D clean energy tax credit. Demand forecasts through 2030 have been raised 11.5% to 683 GWh as data centers increasingly rely on onsite storage to bypass local grid constraints. “This record growth highlights that storage is a powerful reliability tool that strengthens our energy security, meets rising demand, and puts downward pressure on electricity bills.” — Tim Pawlenty