The world largest grid battery installations exceed 1 GW of discharge power. Concentrated in California, Australia, Texas, and China, they represent the fastest growing energy asset class globally. This guide ranks the 15 largest by power capacity.
The ranking
| Rank | Facility | Location | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 1 | Waratah Super Battery | NSW, Australia | 850 (2 hr) and 1,700 total | 1,700 |
| 2 | Moss Landing | California, USA | 750 (Phase 1) + 350 (2) | 3,000+ combined |
| 3 | Vistra Moss Landing extensions | California, USA | 750 combined | 3,000 |
| 4 | Edwards Sanborn | California, USA | 875 | 3,287 |
| 5 | Gemini | Nevada, USA | 380 solar plus 380 MW battery | 1,415 |
| 6 | Bathurst | Georgia, USA | Multi hundred MW | N/A |
| 7 | Kelso Cheves | California, USA | 325 | 1,300 |
| 8 | Manatee Energy Storage | Florida, USA | 409 | 900 |
| 9 | Riverside Storage | California, USA | 250 | 1,000 |
| 10 | Wallgrove | NSW, Australia | 50 MW plus expansion | N/A |
| 11 | Hornsdale Power Reserve | South Australia | 150 | 194 |
| 12 | Torrens Island | South Australia | 250 | 500 |
| 13 | Zhangbei | Hebei, China | 300 | 1,200 |
| 14 | Ravenswood | NY, USA | Coming online, hundreds of MW | N/A |
| 15 | Guodian Longyuan | Ningxia, China | 200 | 800 |
Ranking notes
Battery facilities are counted by power (MW) or energy (MWh). Some projects have staged phases. The list reflects operational facilities as of 2025 based on developer disclosures and industry databases.
Waratah Super Battery
Waratah in New South Wales Australia is currently the largest grid battery facility globally. Provides system security and integrates with a former coal plant retirement. Operated by Akaysha Energy.
Moss Landing complex
Moss Landing on California central coast hosts multiple battery projects. Vistra Energy operates the largest single installation at 750 MW. Complex expansions are ongoing.
Edwards Sanborn
Edwards Sanborn in California combines 875 MW of solar with 3,287 MWh of battery storage. One of the largest solar plus storage facilities operating globally.
China deployment
China has hundreds of grid battery projects, many smaller than the top 15. Rapidly scaling. Zhangbei and Ningxia projects lead in demonstrated scale.
Australia leadership
Australia has been an early leader in grid battery deployment. Hornsdale Power Reserve (originally the Tesla big battery) demonstrated economics in 2017; multiple gigawatt scale projects are now operational.
Combined capacity of top 15
Pipeline of larger projects
The pipeline includes 1 to 3 GW scale facilities in California, Texas, Australia, and China. By 2027 to 2028 expect multiple 1+ GW facilities to be operational. See IEA Renewables 2024.
Chemistry
All top 15 use lithium ion. LFP (lithium iron phosphate) is dominant chemistry for new stationary projects; some legacy sites use NMC. Emerging chemistries (sodium ion, iron flow) not yet at top 15 scale.
Revenue models
Battery revenues come from energy arbitrage, ancillary services (frequency response, capacity), and increasingly resource adequacy contracts. California CAISO and Australia AEMO markets have been leading grid battery revenue design.
Cost trajectory
Capital cost per MWh installed has fallen from over USD 400 in 2015 to USD 250 to 400 in 2025. Continued reductions expected through 2030. Total facility cost for large projects USD 300 to 800 million.
Future ranking outlook
Expect multiple 1 GW plus facilities by 2027, then 2 GW plus by 2030. Long duration (6 to 12 hour) facilities may enter as technology matures. Chinese and Middle Eastern facilities will rise in the ranking.
Frequently asked questions
What is the largest battery in the world?
Waratah Super Battery in Australia is currently the largest by operational power.
How is battery size measured?
Both power (MW discharge rate) and energy (MWh total capacity). Duration is MWh divided by MW.
Are these all lithium ion?
Yes at top 15 scale. Alternative chemistries not yet at this scale.
How long can they discharge?
Typically 2 to 4 hours at rated power. Some 4+ hour facilities exist.
How much do they cost?
USD 250 to 400 per kWh installed. Large project costs USD 300 to 800 million.
How long do batteries last?
15 to 20 years operational life. Capacity degrades over cycles.
Are they safe?
Modern facilities with proper thermal management are safe. Fire risk exists but well managed.
Do they replace power plants?
Complement solar and wind by storing surplus. Provide grid services previously provided by thermal generation.
Where can I see project data?
Wood Mackenzie and BloombergNEF track publicly. The UtilityRadar directory aggregates.
Will there be much larger batteries?
Yes. Multi GW facilities in pipeline for 2027 to 2030.
Summary
The world 15 largest battery storage facilities together provide roughly 7 GW of power and 25 GWh of energy. Waratah in Australia leads. California hosts multiple large facilities. Pipeline suggests 2027 to 2028 will bring first single facility 1+ GW battery projects to top ranks. Rapid growth in grid battery deployment is enabling variable renewable expansion.
Next reading
- Energy storage technologies ranked
- How many battery storage facilities globally
- Renewable energy complete guide
- Browse the UtilityRadar directory
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