Integrators based in China held 76% of the global market in 2025.
Why this market is moving now
- Battery storage installations passed 100 GW worldwide for the first time in 2025.
- World spending on battery storage is expected to pass USD 100 billion in 2026.
- Average global capital costs for battery storage systems fell by nearly 14% in 2025.
Key figures
Global figures for this market, with the year each one describes. Use Cite to copy a reference to this page.
| Figure | Value | Year | Cite |
|---|---|---|---|
| Global battery energy storage installations passed 100 GW in a single year for the first time in 2025. | 100 GW | 2025 | |
| World investment in battery energy storage systems grew by more than 30% in 2025 to nearly USD 80 billion. | 80 USD billion | 2025 | |
| World investment in battery energy storage is expected to pass USD 100 billion in 2026. | 100 USD billion | 2026 | |
| China invested USD 24 billion in battery energy storage in 2025, out of a world total of nearly USD 80 billion. | 24 USD billion | 2025 | |
| Average global capital costs for battery storage systems fell by nearly 14% in 2025 compared with 2024. | 14 % | 2025 | |
| Lithium iron phosphate (LFP) batteries made up more than 90% of global stationary battery storage installations in 2025. | 90 % | 2025 | |
| Integrators based in China held 76% of the global battery storage system market in 2025, and eight of the top 10 global integrators were headquartered in China. | 76 % | 2025 | |
| The three largest global integrators in 2025, Tesla, Sungrow and BYD, held a combined 30% market share, down from 36% for the top three in 2024. | 30 % | 2025 | |
| Tesla deployed 46.7 GWh of energy storage products worldwide in 2025. | 46.7 GWh | 2025 | |
| Fluence Energy, a global grid storage integrator, had a backlog of about USD 5.3 billion on 30 September 2025, up from USD 4.5 billion a year earlier. | 5.3 USD billion | 2025 |
Calculated figures (shares, changes and prices per kilogram) are plain arithmetic on the reported values. Read how we work.
Companies to watch
Tesla
Deployed 46.7 GWh of energy storage worldwide in 2025 and was one of the top two global integrators.
Sungrow
Held one of the top two places in the global integrator market share ranking in 2025, its third year in the top two.
BYD
Moved up five places to third in the global integrator market share ranking in 2025.
Fluence Energy
Grid storage integrator with a backlog of about USD 5.3 billion at 30 September 2025.
What the full report covers
- 01Executive summary
The answer in one page: size, direction and what moves it - 02Market definition and scope
What is in and out of the global market - 03Global market size, 2021 to 2025
Historical series and growth rates - 04Countries and regions
Demand, supply and trade by country and region - 05Outlook to 2031
Base, low and high scenarios with stated assumptions - 06Rules, policy and deadlines
Regulation and programmes that change demand - 07Drivers and barriers
What accelerates or slows adoption, by customer segment - 08Prices, costs and margins
Unit economics where public data allows - 09Competitive landscape
8 to 12 company profiles with recent moves - 10Opportunities and risks
For new entrants, suppliers and investors - 11Method and assumptions
How every figure was built
Included with the full report
- PDF report, 40 to 60 pages
- Excel data pack
- Ready-to-use charts
- Method note and assumptions
- Written to order in 5 working days
Frequently asked questions
How big is the global battery energy storage market?
Installations passed 100 GW worldwide in 2025 for the first time. Investment in battery storage systems was nearly USD 80 billion in 2025.
How fast is the global battery storage market growing?
World investment grew by more than 30% in 2025 to nearly USD 80 billion. It is expected to pass USD 100 billion in 2026.
How much does China invest in battery storage?
China invested USD 24 billion in battery energy storage in 2025, out of a world total of nearly USD 80 billion.
Who are the largest battery storage companies?
Integrators based in China held 76% of the global market in 2025. Tesla, Sungrow and BYD were the top three, with a combined 30% share. Tesla deployed 46.7 GWh in 2025.
Are battery storage prices falling?
Yes. Average global capital costs for battery storage systems fell by nearly 14% in 2025 compared with 2024.
Which battery chemistry is used most for grid storage?
Lithium iron phosphate (LFP) batteries made up more than 90% of global stationary storage installations in 2025.
Free sample
Get a free sample of this report
We send the table of contents, two sample chapters and the method note, usually within one working day. It is free to ask.
- Full table of contents
- Two sample chapters
- Method note and data outline