Hellyer Solar Farm
Santa Clara County, California · EIA plant ID 62689 · Operator: County of Santa Clara (CA)
Nameplate2MWSummer 2 MW
Generators1in service
Net generation0GWh12 mo to Dec 2025
Capacity factor1%solar units, summer MW
Heat rate—thermal plants only
First online2017
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) |
|---|---|---|---|
| 2019 | 3.7 | 18.9% | — |
| 2020 | 3.7 | 19.3% | — |
| 2021 | 4.6 | 23.8% | — |
| 2022 | 3.7 | 19.2% | — |
| 2023 | 3.6 | 18.8% | — |
| 2024 | 0 | 0.0% | — |
| 2025 | 0.2 | 1.3% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| HFARM | Solar Photovoltaic | PV | 2.2 | 2.2 | Aug 2017 | Operating | — | coming soon |
Owner / operator
Operator: County of Santa Clara (CA). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| County of Santa Clara (CA) | 100.0% | 2 MW |
Nearby plants
Within 80 km.
| Guadalupe Solar Farm | 2 MW | 4.5 km |
| Yerba Buena | retired | 5.7 km |
| EQX010 Great Oaks Fuel Cell | 2 MW | 5.7 km |
| EQX015 Great Oaks Fuel Cell | 4 MW | 5.8 km |
| Equinix San Jose | 1 MW | 5.8 km |
| Equinix Great Oaks Blvd. Fuel Cell | 5 MW | 5.9 km |