Sweetwater BESS
Nolan County, Texas · EIA plant ID 69413 · Operator: Sweetwater ESS Assets, LLC
Nameplate10MWSummer 10 MW
Generators1in service
Net generation-1GWh12 mo to Dec 2025
Capacity factor—not meaningful for storage
Heat rate—thermal plants only
First online2021
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), 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2025 | -0.8 | — | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 3006 | Batteries | BA | 10 | 10 | Sep 2021 | Operating | — | coming soon |
Owner / operator
Operator: Sweetwater ESS Assets, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Sweetwater ESS Assets, LLC | 100.0% | 10 MW |
Nearby plants
Within 80 km.
| Inadale Wind Farm LLC Hybrid | 207 MW | 13.5 km |
| Sweetwater Wind 2 LLC | 99 MW | 14.1 km |
| Sweetwater Wind 1 LLC | 38 MW | 14.6 km |
| Sweetwater Wind 4 LLC | 241 MW | 18.1 km |
| Sweetwater Wind 3 LLC | 135 MW | 18.6 km |
| Leuven Solar LLC | — | 18.9 km |