125 MW BESS operating in Kern, CA — California Independent System Operator
125 MW
Nameplate Capacity
2
Generators
units
Batteries
Technology
2024
Operating Since
Coordinates
34.8343, -118.3390
County
Kern, CA
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Tumbleweed Energy Storage, LLC | — | — |
| Owner(s) | Tumbleweed Energy Storage, LLC | — | — |
| Status | Operating | — | — |
Tumbleweed Energy Storage is a 125 MW battery energy storage system located in Kern County, California. The facility, owned and operated by Tumbleweed Energy Storage, LLC, began operating in 2024. It is interconnected to the California Independent System Operator (CAISO) balancing authority within the Western Electricity Coordinating Council (WECC) region. The plant utilizes lithium-ion (LIB) battery chemistry and has a total storage capacity of 200 MWh, providing a duration of 4 hours at its full power output.
The facility consists of two generators utilizing battery technology. Tumbleweed Energy Storage is ranked as the 94th largest power plant in California out of 112, and 434th nationally out of 514. Its primary fuel source is electricity (MWH), indicating that it charges from the grid and discharges to the grid.
Generated from EIA, GEM, and public data sources
NERC Region
WECC
Balancing Authority
California Independent System Operator
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
−2.0K MWh
Net Charging
-24.7K MWh
Annual Net Energy
-2.3%
Capacity Factor
Positive values indicate net discharge (generation exceeds station load). Negative values indicate net charging. Pure battery storage plants are typically net negative due to round-trip efficiency losses.
No financial data available for this plant.
Market Position
ISO/RTO Market
CAISO
LMP Node
WILSPR2_7_N001
Pricing Hub
TH_SP15_GEN-APND
Location Type
Pricing Node
Node Source
Curated node match
Last updated 2026-03-14
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