County of San Diego COC Hybrid
San Diego County, California · EIA plant ID 64601 · Operator: Solar Star California LXXVIII, LLC
Nameplate2MWSummer 2 MW
Generators2in service
Net generation3GWh12 mo to Dec 2025
Capacity factor21%solar units, summer MW
Heat rate—thermal plants only
First online2020
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) |
|---|---|---|---|
| 2021 | 2.9 | 19.5% | — |
| 2022 | 3.3 | 22.4% | — |
| 2023 | 3.1 | 20.2% | — |
| 2024 | 3.1 | 20.9% | — |
| 2025 | 3.1 | 20.9% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| ESS | Batteries | BA | 0.4 | 0.5 | Jul 2020 | Operating | — | coming soon |
| PV | Solar Photovoltaic | PV | 1.7 | 1.7 | Jul 2020 | Operating | — | coming soon |
Owner / operator
Operator: Solar Star California LXXVIII, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Solar Star California LXXVIII, LLC | 81.0% | 2 MW |
| 53 SP Solar Trust | 19.1% | 0 MW |
Nearby plants
Within 80 km.
| Kearny South Energy Storage | 10 MW | 0.1 km |
| Kearny North Energy Storage | 10 MW | 0.3 km |
| L3 Harris San Diego | — | 1.3 km |
| Kyocera America Project | 4 MW | 1.8 km |
| Kearny Mesa Storage LLC | 1 MW | 2.1 km |
| EnerSmart Mesa Heights Sub Station | — | 2.2 km |