The latest EIA data cited by pv magazine puts U.S. operating battery storage capacity at 52 GW as of June 2026. The fleet has expanded at roughly 70% per year over the past three years, and developers plan another 54 GW of additions through 2028. The numbers show storage moving from a supporting technology to a central resource for balancing solar output, managing peak demand, and strengthening grid reliability.
Source: pv magazine Global. Solar News summarizes; the complete story is on the publisher's site.

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