Tumbleweed Energy Storage
Tumbleweed Energy Storage is a 125 MW battery storage project in Kern County, California, operated by Tumbleweed Energy Storage, LLC. EIA-860M lists 2 generating units here, inside CAISO. Its units entered service in 2024.
As of 2026-07 (inventory dated 2026-07-31) · EIA-860M Preliminary Monthly Electric Generator Inventory · eia.gov/…/july_generator2026.xlsx · eia.gov/…/eia860m
- Nameplate capacity
- 125 MW
- 125 MW net summer
- Generating units
- 2
- In service
- 2024
- EIA plant ID
- 66666
Where it is
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- County
- Kern County, California
- Coordinates
- 34.8343, -118.339
- Balancing authority
- CISO
- Sector
- IPP Non-CHP
Units, technology and status
- Operator of record
- Tumbleweed Energy Storage, LLC
- Primary energy source
- Battery
- Technologies
- Batteries
- Status
- Operating
Tumbleweed Energy Storage: FAQ
- Where is Tumbleweed Energy Storage?
- In Kern County, California (CA). The map on this page is placed at the coordinates EIA files for the plant, which locate the site rather than any individual unit.
- How big is Tumbleweed Energy Storage?
- 125 MW of nameplate capacity across 2 units, as of the EIA-860M release for 2026-07.
- Who owns Tumbleweed Energy Storage?
- EIA-860M names Tumbleweed Energy Storage, LLC as the reporting entity. That is the operator of record on the survey, which is not always the ultimate owner.
- Is this the same as Tumbleweed Energy Storage LLC?
- Probably, but EIA-860M does not say. The survey records a plant name and a reporting entity — Tumbleweed Energy Storage, LLC here — not the project company that holds the asset. Project companies are commonly registered as an LLC carrying the plant's name, so a search for "Tumbleweed Energy Storage LLC" usually means this site. This page shows only what EIA files, and does not assert a corporate structure it cannot see.
- Is Tumbleweed Energy Storage still running?
- EIA-860M files it as "Operating" for 2026-07. Statuses change monthly, and this page follows the monthly release.