Castor Solar
Kern County, California · EIA plant ID 60277 · Operator: ZGlobal Inc
Nameplate2MWSummer 2 MW
Generators1in service
Net generation1GWh12 mo to Dec 2025
Capacity factor6%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 | 1.5 | 14.7% | — |
| 2017 | 2.8 | 21.2% | — |
| 2018 | 2.6 | 20.1% | — |
| 2019 | 2.1 | 16.2% | — |
| 2020 | 3.1 | 23.3% | — |
| 2021 | 3.1 | 23.8% | — |
| 2022 | 2.9 | 22.4% | — |
| 2023 | 0.9 | 7.0% | — |
| 2024 | 0 | 0.0% | — |
| 2025 | 0.8 | 5.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| CASTR | Solar Photovoltaic | PV | 1.5 | 1.5 | Apr 2016 | Operating (Out of service, expected back within the year) | — | coming soon |
Owner / operator
Operator: ZGlobal Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| GL Castor I, LLC | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Eagle Creek | 3 MW | 0.8 km |
| Elk Hills Power LLC | 623 MW | 10.8 km |
| Maricopa West Solar PV, LLC | 20 MW | 12.4 km |
| Taft 26C Cogen | 12 MW | 13.2 km |
| Chalk Cliff Limited | 46 MW | 13.3 km |
| Berry Cogen | 39 MW | 14.1 km |