Valley Center
San Diego County, California · EIA plant ID 60509 · Operator: Heelstone Energy Holdings, LLC
Nameplate2MWSummer 2 MW
Generators1in service
Net generation4GWh12 mo to Dec 2025
Capacity factor21%solar units, summer MW
Heat rate—thermal plants only
First online2016
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) |
|---|---|---|---|
| 2016 | 0.3 | 20.2% | — |
| 2017 | 5.9 | 29.5% | — |
| 2018 | 6 | 29.7% | — |
| 2019 | 5.6 | 27.9% | — |
| 2020 | 5.8 | 28.9% | — |
| 2021 | 5.8 | 28.8% | — |
| 2022 | 5.9 | 29.4% | — |
| 2023 | 3.5 | 17.5% | — |
| 2024 | 4.7 | 23.1% | — |
| 2025 | 4.3 | 21.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| PV1 | Solar Photovoltaic | PV | 2.3 | 2.3 | Dec 2016 | Operating | — | coming soon |
Owner / operator
Operator: Heelstone Energy Holdings, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Heelstone Energy Holdings, LLC | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Valley Center 85 | 85 MW | 2.6 km |
| Valley Center 54 | 54 MW | 2.6 km |
| Valley Center 2 | 5 MW | 2.6 km |
| Valley Center 1 | 3 MW | 2.6 km |
| NLP Granger | 3 MW | 4 km |
| Bear Valley | 1 MW | 9.4 km |