Hollister Wastewater Facility
San Benito County, California · EIA plant ID 68016 · Operator: Solar Star Arizona II LLC
Nameplate1MWSummer 1 MW
Generators1in service
Net generation2GWh12 mo to Dec 2025
Capacity factor20%solar units, summer MW
Heat rate—thermal plants only
First online2011
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 | 1.7 | 18.8% | — |
| 2025 | 1.7 | 19.8% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| HOLWF | Solar Photovoltaic | PV | 1 | 1 | Nov 2011 | Operating | — | coming soon |
Owner / operator
Operator: Solar Star Arizona II LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Solar Star Arizona II LLC | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| Hollister Solar LLC | 2 MW | 1.6 km |
| Enerparc CA1 LLC | 2 MW | 4.7 km |
| Graniterock Quarry | 4 MW | 14.2 km |
| Gilroy Peaking Energy Center | 144 MW | 17.7 km |
| Gilroy Power Plant | 130 MW | 17.8 km |
| Gavilan Community College Solar Project | 2 MW | 20.9 km |