Solmar Insights
Global battery energy storage is on track for rapid expansion, with capacity projected to grow sixfold between 2025 and 2030. A new GlobalData report points to utility procurement, grid limitations, and swelling electricity demand, especially from AI-driven data centers, as catalysts driving this 42% compound annual growth rate. The United States and China collectively account for nearly three-quarters of global installed storage, reinforcing their critical role in the sector’s development through the end of the decade.
Key figures
Battery storage to increase sixfold by 2030
42% compound annual growth rate through 2030
US and China hold 74.6% of global installed battery storage
Record deployment in the United States
The US battery storage sector saw unprecedented growth at the close of 2025, adding 57.6 GWh of new storage for a cumulative grid-scale capacity of 137 GWh. This record-setting pace continued into 2026, with 9.7 GWh deployed in the first quarter alone, a 32% year-over-year increase and the highest first-quarter growth on record for the US market.
Front-of-the-meter, utility-scale projects dominate, representing over 75% of deployed capacity in early 2026. Developers commissioned 7.8 GWh in this segment in just the first quarter. According to the US Energy Information Administration, utility-scale battery additions expected in 2026 total 24 GW, primarily concentrated in Texas (53%), California (14%), and Arizona (13%).
This rising deployment aligns with national energy priorities, including the need to accommodate grid variability from renewable energy penetration and to support increasingly electrified commercial and industrial load profiles.
Grid constraints and data center demand
US growth in grid-scale battery deployment stems not only from renewable integration but also from growing demand for reliable, flexible power, most notably from the surge in AI and data center projects. These facilities require continuous, predictable energy delivery, putting new stress on already constrained transmission systems.
Increasing electricity consumption from industrial-scale data centers and electrification initiatives compels both utilities and policy makers to prioritize energy storage solutions. Batteries play a central role in time-shifting renewable energy, ensuring reliable grid operations during system peaks, and addressing localized congestion challenges.
Behind-the-meter adoption is also advancing. Commercial users are engaging with state-level virtual power plant programs, in states like Massachusetts, Texas, Arizona, and Illinois, to optimize facility-level demand and reinforce distribution network resilience.
Manufacturing capacity and supply chain shifts
Battery manufacturing in the United States is undergoing a significant transformation. Automotive EV battery factories are refocusing some of their capacity toward stationary storage cells, a response to surging stationary demand and policy incentives. Domestic battery cell manufacturing is approaching 120 GWh, supporting both grid-scale and behind-the-meter installations.
US energy storage expansion benefits from strengthening domestic supply chains. Lower lithium-ion prices and maturing manufacturing processes help reduce project capex, while national and state policy support continues to drive investments in new gigafactories and value chain localization.
Supply chain resiliency remains a strategic focus. With most current capacity concentrated in the US and China, further expansion in North America is critical to avoid bottlenecks or over-reliance on a few geographies.
Four-hour duration as new standard
Projects in both global and US markets are coalescing around four-hour duration battery storage. This marks a shift from earlier two-hour systems, reflecting how grids increasingly need to time-shift renewable generation, especially solar, into evening peak demand.
Regulatory action is helping set the tone. In California, the CPUC has established four-hour systems as the baseline for resource adequacy and capacity credit. Other states are following with programmatic and interconnection standards that favor multi-hour storage solutions.
Project developers increasingly prefer co-located solar-plus-storage design. This reduces capital and scheduling risk and enables export-limited arrangements that maximize solar output by storing excess production, improving project returns where grid interconnection is capped.
Market drivers and regulatory support
Policy and regulatory frameworks in the US are central to the acceleration of energy storage deployment. Federal, state, and ISO programs offer incentives and market constructs that reward flexible capacity for both reliability and emissions compliance.
States like Texas, California, and Arizona are leading utility procurement, driven by regional energy policies and capacity market mechanisms. In tandem, market reforms are underway to update interconnection procedures and resource planning, further reducing the friction for large project buildouts.
As supply chain costs abate and manufacturing scales, storage is poised to become foundational in supporting higher renewable penetration, unlocking grid flexibility, and enabling the reliable operation of large-scale digital infrastructure projects.
What this means for buyers
Institutional buyers, developers, and investors must anticipate a transformed energy storage landscape, with four-hour systems increasingly required for grid integration and data center resiliency. Project opportunities will be greatest in Texas, California, and Arizona, with growing value from co-located solar-plus-storage and behind-the-meter virtual power plant participation. Expanded domestic manufacturing and supply chain depth reduce procurement risk but require ongoing diligence as the pace of deployment accelerates. Early engagement with regulatory processes and interconnection queues will be essential to secure project viability through 2030.
