Briefing/projectactive
WILLOW ROCK ENERGY STORAGE is a 620 MW Battery project in California, currently active.
The reported queue phase is C13. Proposed COD is 2030-07-01.
- Queue ID
- CAISO-1782
- Location
- Kern, California
- Technology
- Battery
- Market / region
- CAISO
- Point of interconnection
- Whirlwind Substation 230kV
What stands out
1
WILLOW ROCK ENERGY STORAGE is a 620 MW Battery project in California with status active.
2
The reported queue phase is C13; proposed COD is 2030-07-01.
3
Latest linked story: “US ROUNDUP: Hydrostor A-CAES project, Hawaiian Electric on Maui, Peregrine picks Wärtsilä for 500MWh Texas BESS” (Energy-Storage.News, 2025-12-24).
Market and operating context
- Queue date
- 2020-04-15
- Proposed COD
- 2030-07-01
- IA status
- IA Executed
- Study phase
- C13
- Service type
- NRIS
Why it matters
Queue phase, proposed timing, developer identity, and linked events determine how much of the stated pipeline should be treated as actionable development capacity. The project page and deeper report preserve those fields for further diligence.
