US Energy Storage Sets a New Record in Q2 2025

The United States added a record 5.6 GW of battery storage from April to June 2025. The jump came from big grid projects and from homes adding batteries, too. ACP and Wood Mackenzie report that the market reached its biggest quarter ever: 5.6 GW installed in Q2 2025. That’s a new high for the US. Most of the gain came from large, utility-scale batteries. But homes also grew fast. Together, they’re helping the grid handle evening peaks and more solar power. 

Key points

• 5.6 GW total storage added in Q2 2025. 
• 4.9 GW came from utility-scale projects, up 63% year over year. 
• Homes added 608 MW, a 132% jump year over year. 
• California, Texas, and Arizona each added more than 1 GW of storage. 

By the numbers

Where the growth showed up

Three states led the quarter: California, Texas, and Arizona. Each crossed the one-gigawatt mark in Q2 2025. This reflects strong solar growth, high peak demand, and better market rules. 

New growth markets: Florida and Georgia

Analysts expect more action in the Southeast next. Florida and Georgia are poised to rise because utilities there are buying more storage. 

Georgia Power has launched a 500 MW energy storage RFP. It requires at least a two-hour duration. Projects can be standalone or tied to renewables. The RFP is run by an independent evaluator. 

• Target: 500 MW of battery storage. 
• Minimum duration: Two hours. 
• Eligible projects: Standalone storage, or storage with renewables. 
• Timeline signals: Regulatory steps and bidder events are outlined. 

This move fits with Georgia Power’s resource plans. Earlier planning documents flagged a 500 MW storage need by the late 2020s. 

Why homes are adding batteries

Homeowners want backup power during outages. They also want more control of bills. A battery lets them store daytime solar and use it later when rates are high. That’s simple, and it works. It also helps the grid during the evening. 

• Resilience: Keep lights on during blackouts.
• Rate savings: Shift solar to expensive hours.
• Grid support: Lower stress at peak times.

How this changes grid operations

Large batteries are reshaping peak hours. They charge when power is cheap. They discharge when demand spikes. This helps replace peaker plants and smooths solar swings. It also improves reliability during heat waves. :contentReference[oaicite:20]{index=20}

In short, batteries provide

• Peak support for evening demand. 
• Faster build times than many conventional plants. 
• Flexibility for grids with more wind and solar. 

What’s next

ACP warns that policy and sourcing rules may cause bumps in future years. Some analysts even see a possible dip in utility-scale installs around 2027. But the overall direction still looks strong.

For now, the data is clear. Q2 2025 set a new record. Utilities are planning more storage. Homes are joining in. And the map is widening from the West and Texas to the Southeast. That’s good news for a grid that needs flexibility and speed.

Jonas Muthoni

Jonas Muthoni is Editor-in-Chief of Microgrid Media, where he oversees reporting and analysis on microgrids, energy storage, distributed energy resources, data center power demand, grid modernization, resilience, renewable energy, and electricity policy and markets. His work focuses on the infrastructure, technologies, and regulatory developments reshaping the power system.

As Editor-in-Chief, Jonas leads Microgrid Media’s editorial strategy and standards, including story selection, source verification, technical accuracy, and the development of original reporting and analysis. His coverage draws on regulatory filings, government records, utility and company disclosures, technical documentation, and independent industry sources to explain significant developments across the evolving energy system.