Henrietta Solar Project
Kings County, California · EIA plant ID 58975 · Operator: Southern Power Co
Nameplate102MWSummer 100 MW
Generators1in service
Net generation170GWh12 mo to Dec 2025
Capacity factor19%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 | 132.1 | 35.3% | — |
| 2017 | 250.1 | 28.0% | — |
| 2018 | 254.4 | 28.5% | — |
| 2019 | 236.4 | 27.0% | — |
| 2020 | 241.3 | 27.5% | — |
| 2021 | 240.3 | 27.4% | — |
| 2022 | 229.6 | 26.2% | — |
| 2023 | 234.2 | 26.7% | — |
| 2024 | 218 | 24.8% | — |
| 2025 | 170.4 | 19.4% | — |
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 | 102 | 100 | Aug 2016 | 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).
| Parrey, LLC | 100.0% | 102 MW |
Nearby plants
Within 80 km.
| Java Solar, LLC | 14 MW | 1.9 km |
| RE Kansas South LLC | 20 MW | 2.7 km |
| RE Kansas Solar, LLC | 20 MW | 4.1 km |
| Lemoore 1 | 2 MW | 4.4 km |
| Kings CSG 3 LLC Community Solar | 3 MW | 7.9 km |
| Slate Hybrid | 440 MW | 8 km |