Tehachapi Energy Storage ProjectRetired
Kern County, California · EIA plant ID 59661 · Operator: Southern California Edison Co
×8 MW battery retired since 2020 (latest Dec 2022)
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—not meaningful for storage
Heat rate—thermal plants only
First online—
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
No capacity factor available.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2016 | 0 | — | — |
| 2017 | 1.7 | — | — |
| 2018 | 0 | — | — |
| 2019 | 0 | — | — |
| 2020 | 0 | — | — |
| 2021 | 0 | — | — |
| 2022 | 0 | — | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| TSP1 | Batteries | BA | 8 | 8 | Apr 2016 | Retired Dec 2022 | — | coming soon |
Owner / operator
Operator: Southern California Edison Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Terra-Gen VG Wind LLC | 7 MW | 0.8 km |
| GE - Tehachapi | retired | 3.7 km |
| Helzel & Schwarzhoff 86 | 2 MW | 3.7 km |
| Helzel & Schwarzhoff 88 Wind Farm | retired | 3.8 km |
| 85 B | 25 MW | 4.7 km |
| 85 A | 21 MW | 4.7 km |