Chestnut
Kings County, California · EIA plant ID 63849 · Operator: Chestnut Westside LLC
Nameplate286MWSummer 286 MW
Generators2in service
Net generation358GWh12 mo to Aug 2026
Capacity factor29%solar units, summer MW
Heat rate—thermal plants only
First online2023
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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) |
|---|---|---|---|
| 2024 | 363.8 | 29.2% | — |
| 2025 | 377.8 | 30.6% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| BESS1 | Batteries | BA | 135 | 135 | Dec 2023 | Operating | — | coming soon |
| CHNUT | Solar Photovoltaic | PV | 150.6 | 150.6 | Dec 2023 | Operating | — | coming soon |
Owner / operator
Operator: Chestnut Westside LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Chestnut Westside LLC | 100.0% | 286 MW |
Nearby plants
Within 80 km.
| Solar Blue | 475 MW | 1.5 km |
| Grape | — | 1.6 km |
| Aquamarine | 250 MW | 3.3 km |
| Cherry | 40 MW | 4.5 km |
| Almond | 20 MW | 5.8 km |
| Mustang Two | 150 MW | 6.3 km |