Full Breakdown
Surge in U.S. Battery Energy Storage Deployment Amid Supply Chain Challenges
9/29/2025, 9:26:19 PM
Record Growth in Battery Storage Installations
The United States experienced a significant increase in battery energy storage deployment during the second quarter of 2025, with a total of 5.6 gigawatts (GW) added from April to June. This surge was primarily driven by utility-scale storage, which accounted for 4.9 GW, marking a 62% year-over-year growth. According to a report by the American Clean Power (ACP) and Wood Mackenzie, this capacity is sufficient to power approximately 3.7 million homes during peak-demand hours. Notably, states such as California, Texas, and Arizona each contributed over 1 GW of new storage installations.
Future Growth Markets and Supply Chain Concerns
Looking ahead, Florida and Georgia are projected to become major markets for battery storage, largely due to aggressive procurement strategies by utilities. For instance, Georgia Power has issued a request for proposals for 500 MW of grid-scale storage. However, experts warn that supply chain challenges may hinder the growth of utility-scale storage. Allison Weis, global head of storage at Wood Mackenzie, noted that after 2025, new battery sourcing requirements will be implemented to qualify for the investment tax credit (ITC). While domestic supply is increasing, reliance on imports from China may be necessary to address potential shortages.
Residential Storage Market Expansion
The residential battery storage market also saw remarkable growth, with installations reaching 608 MW in Q2, a 132% increase compared to the previous year. California, Arizona, and Illinois led this growth, with California achieving a 79% battery attachment rate in solar projects. The report indicates that residential storage is expected to outpace solar installations due to favorable policies and high attachment rates in key markets.
Long-Term Projections and Regulatory Risks
The ACP and Wood Mackenzie forecast that U.S. battery storage capacity will reach 87.8 GW by 2029, driven by both residential and utility-scale segments. However, there are concerns regarding a potential 10% decline in utility-scale installations by 2027, primarily due to uncertainties surrounding new regulations on battery cell sourcing.
Criticism of Utility Practices
The Sierra Club's annual report highlights a troubling trend among utilities, which are reportedly backtracking on climate commitments while increasing investments in fossil fuels. Of the 75 utilities analyzed, 65 have some form of climate pledge, yet many are planning to add 118 GW of new gas capacity by 2035. Critics argue that utilities are using load growth as a justification for expanding gas infrastructure instead of investing in renewable energy solutions.
Official Statements & Responses
Allison Feeney, a research analyst at Wood Mackenzie, stated, “Residential storage is expected to outpace solar due to stronger policy resilience.” Meanwhile, Congresswoman Kathy Castor emphasized the need for utilities to adopt cleaner energy solutions, saying, “America is the land of opportunity and innovation, and we need to break down a lot of these barriers.”
Verbatim Quotes
- “Weiss commented, “After 2025, utility-scale storage projects must comply with new, stringent battery sourcing requirements to receive the ITC [investment tax credit].” — Allison Weis, Global Head of Storage, Wood Mackenzie
- “Utilities are greenwashing,” — Sierra Club Report
- “Wind, solar and all of these distributed resources should be the default option for cheap, clean and reliable power,” — Noah Ver Beek, Senior Energy Campaigns Analyst, Sierra Club
This comprehensive overview illustrates the rapid growth of battery energy storage in the U.S., alongside the challenges and criticisms facing the industry as it navigates regulatory changes and supply chain issues.
