WAL456
Cameron County, Texas · EIA plant ID 64777 · Operator: Walmart Stores Texas, LLC
Nameplate1MWSummer 1 MW
Generators3in service
Net generation0GWh12 mo to Dec 2025
Capacity factor3%gas/coal/oil units, summer MW
Heat rate9,997Btu/kWhfossil units, electric fuel, HHV
First online2021Runs as peaking
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), gas/coal/oil 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2021 | 0 | 0.0% | — |
| 2022 | 0.3 | 3.0% | 13,974 |
| 2023 | 0.4 | 3.6% | 14,000 |
| 2024 | 0.3 | 2.6% | 14,526 |
| 2025 | 0.4 | 3.4% | 9,997 |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Natural Gas Internal Combustion Engine | IC | 0.4 | 0.4 | Sep 2021 | Operating | — | coming soon |
| GEN2 | Natural Gas Internal Combustion Engine | IC | 0.4 | 0.4 | Sep 2021 | Operating | — | coming soon |
| GEN3 | Natural Gas Internal Combustion Engine | IC | 0.4 | 0.4 | Sep 2021 | Operating | — | coming soon |
Owner / operator
Operator: Walmart Stores Texas, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Walmart Stores Texas, LLC | 100.0% | 1 MW |
Nearby plants
Within 80 km.
| Aggreko MSR Grid PC7 | 10 MW | 2.8 km |
| Hecate Grid East Valley Storage | — | 4.1 km |
| Silas Ray | 143 MW | 7 km |
| Villa Cavasos | 9 MW | 9.2 km |
| SMT Los Fresnos LLC | 10 MW | 11 km |
| Resaca Oasis Storage | — | 14.7 km |