City of Rosamond (CA)
Kern County, California · EIA plant ID 66667 · Operator: Standard Solar
Nameplate1MWSummer 1 MW
Generators1in service
Net generation3GWh12 mo to Dec 2025
Capacity factor32%solar units, summer MW
Heat rate—thermal plants only
First online2023
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) |
|---|---|---|---|
| 2023 | 1.2 | 20.4% | — |
| 2024 | 2.7 | 30.6% | — |
| 2025 | 2.8 | 31.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| ROSA | Solar Photovoltaic | PV | 1 | 1 | May 2023 | Operating | — | coming soon |
Owner / operator
Operator: Standard Solar. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Standard Solar | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| Pacifico Power Lancaster 01 | 6 MW | 6.3 km |
| Lancaster WAD B | 3 MW | 7.5 km |
| Willow Rock Energy Storage Center | — | 8.6 km |
| RE Rosamond Two LLC | 20 MW | 11 km |
| SEPV Sierra | 11 MW | 11.4 km |
| RE Rosamond One LLC | 20 MW | 11.6 km |