Lost Hills/Blackwell
Kern County, California · EIA plant ID 58711 · Operator: Southern Power Co
Nameplate32MWSummer 32 MW
Generators2in service
Net generation59GWh12 mo to Dec 2025
Capacity factor21%solar units, summer MW
Heat rate—thermal plants only
First online2015
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), solar units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
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) |
|---|---|---|---|
| 2015 | 66.5 | 30.3% | — |
| 2016 | 92 | 32.7% | — |
| 2017 | 89 | 31.8% | — |
| 2018 | 90.3 | 32.2% | — |
| 2019 | 85.4 | 30.5% | — |
| 2020 | 84.4 | 30.0% | — |
| 2021 | 90.5 | 32.3% | — |
| 2022 | 87.4 | 31.2% | — |
| 2023 | 77.1 | 27.5% | — |
| 2024 | 80.6 | 28.7% | — |
| 2025 | 58.9 | 21.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| BLKW | Solar Photovoltaic | PV | 12 | 12 | Apr 2015 | Operating | — | coming soon |
| LTHL | Solar Photovoltaic | PV | 20 | 20 | Apr 2015 | Operating | — | coming soon |
Owner / operator
Operator: Southern Power Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Lost Hills Solar, LLC | 62.5% | 20 MW |
| Blackwell Solar, LLC | 37.5% | 12 MW |
Nearby plants
Within 80 km.
| Blackwell?s Corner Storage Facility | 2 MW | 0.9 km |
| Berrenda Mesa Water District | 6 MW | 1.7 km |
| Blackwell Solar Park | 20 MW | 2.3 km |
| Lost Hills Oilfield | 2 MW | 3.3 km |
| Roll Lost Hills | retired | 5.1 km |
| Wonderful Lost Hills | 17 MW | 6 km |