Santa Teresa Solar
Dona Ana County, New Mexico · EIA plant ID 68866 · Operator: Santa Teresa Solar
150 MW under construction (Batteries), first expected Oct 2026 · EIA-860M
Nameplate150MWSummer 150 MW
Generators1in service · 150 MW building
Net generation99GWh12 mo to Aug 2026
Capacity factor89%solar units, summer MW
Heat rate—thermal plants only
First online2026
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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.
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 |
|---|---|---|---|---|---|---|---|---|
| STS | Solar Photovoltaic | PV | 150 | 150 | Aug 2026 | Operating | — | coming soon |
| SAN | Batteries | BA | 150 | 150 | planned Oct 2026 | Under construction | — | coming soon |
Owner / operator
Operator: Santa Teresa Solar. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Santa Teresa Solar | 100.0% | 150 MW |
Nearby plants
Within 80 km.
| Roadrunner Solar | 20 MW | 2.8 km |
| Milagro Solar I | 225 MW | 5.5 km |
| Four Peaks Camino Real | retired | 10 km |
| Rio Grande | 348 MW | 14.3 km |
| Providence Memorial Hospital | 4 MW | 19.1 km |
| Phelps Dodge Refining | 20 MW | 29.4 km |