Mesquite Clean Energy Center (BESS)
Cameron County, Texas · EIA plant ID 69457 · Operator: On Energy Storage
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 |
|---|---|---|---|---|---|---|---|---|
| MEBA1 | Batteries | BA | 10.1 | 10.1 | Sep 2026 | Operating | — | coming soon |
Owner / operator
Operator: On Energy Storage. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| On Energy Storage | 100.0% | 10 MW |
Nearby plants
Within 80 km.
| Accalia Point Solar, LLC | — | 1.5 km |
| BESS La Feria | 10 MW | 2.3 km |
| Nebula Solar | 135 MW | 2.6 km |
| Vancourt Solar Interconnections | 45 MW | 2.6 km |
| SMT Harlingen II LLC | 10 MW | 13.3 km |
| Santa Rosa | 9 MW | 14.7 km |