Columbia Solar Energy, LLC
Contra Costa County, California · EIA plant ID 59979 · Operator: Columbia Solar Energy LLC
Nameplate19MWSummer 19 MW
Generators1in service
Net generation12GWh12 mo to Dec 2025
Capacity factor7%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 | 4.5 | 10.6% | — |
| 2016 | 40.8 | 24.2% | — |
| 2017 | 41.3 | 24.6% | — |
| 2018 | 39.3 | 23.4% | — |
| 2019 | 38.4 | 22.8% | — |
| 2020 | 33.4 | 19.8% | — |
| 2021 | 32.6 | 19.4% | — |
| 2022 | 23.4 | 13.9% | — |
| 2023 | 19.7 | 11.7% | — |
| 2024 | 18.7 | 11.1% | — |
| 2025 | 11.9 | 7.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Solar Photovoltaic | PV | 19.2 | 19.2 | Oct 2015 | Operating | — | coming soon |
Owner / operator
Operator: Columbia Solar Energy LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Columbia Solar Energy LLC | 100.0% | 19 MW |
Nearby plants
Within 80 km.
| Los Medanos Energy Center | 678 MW | 1.3 km |
| Delta Energy Center | 944 MW | 1.9 km |
| Pittsburg RV Solar | — | 2 km |
| Diablo Energy Storage | 200 MW | 3.3 km |
| Ameresco Keller Canyon | 4 MW | 6.3 km |
| Riverview Energy Center | 47 MW | 6.5 km |