US Battery Storage Hits New High as Grid-Scale Projects Surge
New data shows the US added 20.2 gigawatt-hours of battery capacity in the second quarter of 2026, a record. The growth is mainly from large utility-scale projects, while residential installations are expected to drop 16% this year because a key tax credit expired. Overall, the country is on pace to install 71 gigawatt-hours in 2026, a 20% increase over last year.
The record-breaking quarter was propelled by seven massive utility-scale projects, each exceeding one gigawatt-hour of capacity. This expansion is primarily driven by declining battery costs and the urgent requirement to balance increasing solar and onshore wind generation on the grid.
While commercial behind-the-meter systems, especially those for data centers, saw robust growth, home installations experienced a significant decline following the expiration of a key subsidy in 2025. Furthermore, new tariffs and tax rules are pushing the industry toward domestic cell production, though local manufacturing capacity is not expected to satisfy demand until the next decade, which may elevate short-term costs.
This surge in grid-scale storage could enhance grid reliability and potentially lower electricity costs by enabling wider use of renewable energy. However, the residential slowdown may leave homeowners more exposed to power outages or higher peak-hour rates. The ongoing shift to domestic manufacturing could create new industrial jobs, but it may also raise initial project expenses, potentially slowing the pace of future installations.