Cotulla BESS 1
La Salle County, Texas · EIA plant ID 69510 · Operator: Marubeni Power International, Inc.
Nameplate10MWSummer 10 MW
Generators1in service
Net generation—GWh12 mo
Capacity factor—not meaningful for storage
Heat rate—thermal plants only
First online2026
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 |
|---|---|---|---|---|---|---|---|---|
| COTUL | Batteries | BA | 9.9 | 9.9 | Jul 2026 | Operating | — | coming soon |
Owner / operator
Operator: Marubeni Power International, Inc.. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Marubeni Power International, Inc. | 100.0% | 10 MW |
Nearby plants
Within 80 km.
| Dahlia Energy | — | 29 km |
| Caterina | 10 MW | 42.5 km |
| La Salle ESS | — | 43.2 km |
| La Salle Solar | — | 43.4 km |
| Holcomb (TX) | 10 MW | 46.5 km |
| Shakes Solar | 200 MW | 49.2 km |