Athens Solar I (Hybrid)Planned
Placer County, California · EIA plant ID 67982 · Operator: vesper energy development llc
500 MW planned (Batteries, Solar Photovoltaic), first expected Jun 2028 · EIA-860M
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online—
Capacity factor by year
Net MWh ÷ (summer MW × hours), primary-fuel units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
No capacity factor available.
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.
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 |
|---|---|---|---|---|---|---|---|---|
| ATHS1 | Solar Photovoltaic | PV | 250 | 250 | planned Jun 2028 | Planned | — | coming soon |
| ATHSB | Batteries | BA | 250 | 250 | planned Jun 2028 | Planned | — | coming soon |
Owner / operator
Operator: vesper energy development llc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Nacimiento Hydro Project | 4 MW | 47.5 km |
| Salinas River Cogeneration | 39 MW | 53.3 km |
| Aera San Ardo Cogen Facility | 3 MW | 54 km |
| Sargent Canyon Cogeneration | 38 MW | 54.9 km |
| King City Power Plant | 133 MW | 58 km |
| King City Peaking | 47 MW | 58.1 km |