Energy Storage Market Outlook

The Energy Storage Market Outlook (ESMO) is a quarterly publication produced by the Solar Energy Industries Association and Benchmark Mineral Intelligence. ESMO draws on Benchmark’s proprietary grid and behind the meter data on U.S. energy storage deployment, which when combined with SEIA’s industry leading expertise, provides a detailed analysis of the state of the U.S. energy storage market and forecasts to inform industry leaders, investors, manufacturers, and policymakers. The report includes comprehensive analysis of deployment trends, market sizing, and growth projections for utility scale and behind the meter segments, in addition to an energy storage supply chain analysis, federal and state policy overview, and technology roadmaps and developments.

Key Findings

• In Q2 2026, battery energy stationary storage (BESS) installations reached 20.2 GWh GWh, the largest quarter in history and a a 108% quarter-over-quarter increase
• The utility-scale market continued underpin growth, with 18 GWh installed, largely supported by seven gigawatt scale projects. Arizona installed over 6.2 GWh of utility scale projects, the largest quarterly deployment for any state in history. .
• In the BTM space, residential storage added 657 MWh and commercial and industrial (C&I) added 1.8 GWh, largely on the back of demand from data centers.
• Two cell factories opened in Q2, bringing total cell manufacturing capacity to over 50 GWh. A new module manufacturing facility opened as well, bringing total module manufacturing capacity to over 100 GWh.
• By 2030, the market is set to exceed annual installations of 110 GWh and install a cumulative 683 GWh.

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