U.S. Energy Storage Market Posts Record 18.9 GWh in Q2 as Longer-Duration Systems Drive Growth

The U.S. energy storage market installed a record 18.9 GWh of battery energy storage systems in Q2 2026, driven by a shift toward longer-duration storage systems and stronger residential energy capacity. Energy market growth went up 17% year-over-year (y-o-y), despite a 7% overall decline in installed power capacity y-o-y, according to the latest U.S. Energy ...