Sanborn Hybrid 3Under construction
Kern County, California · EIA plant ID 69956 · Operator: Terra-Gen Operating Co-Hybrid
578 MW under construction (Batteries, Solar Photovoltaic), first expected Oct 2026 · EIA-860M
Nameplate—MWSummer — MW
Generators0in service · 578 MW building
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 |
|---|---|---|---|---|---|---|---|---|
| S10BS | Batteries | BA | 210 | 210 | planned Dec 2026 | Under construction | — | coming soon |
| S10PV | Solar Photovoltaic | PV | 210 | 210 | planned Dec 2026 | Under construction | — | coming soon |
| S8 | Solar Photovoltaic | PV | 55 | 55 | planned Oct 2026 | Under construction | — | coming soon |
| S9 | Solar Photovoltaic | PV | 103 | 103 | planned Dec 2026 | Under construction | — | coming soon |
Owner / operator
Operator: Terra-Gen Operating Co-Hybrid. 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.
| Edwards Sanborn S4 | 60 MW | 1.9 km |
| Edwards Sanborn S3 | 71 MW | 2.4 km |
| PRC-Desoto Intl/PPG Aerospace | 2 MW | 3.4 km |
| Edwards Sanborn E1A | 293 MW | 3.9 km |
| Edwards Sanborn S1 | 85 MW | 3.9 km |
| Edwards Sanborn E1B | 290 MW | 4 km |