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WAL461

Maverick County, Texas · EIA plant ID 64778 · Operator: Walmart Stores Texas, LLC
Natural gasNatural Gas Internal Combustion EngineERCOTBA: ERCO
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Nameplate1MWSummer 1 MW
Generators3in service
Net generation0GWh12 mo to Dec 2025
Capacity factor3%gas/coal/oil units, summer MW
Heat rate9,994Btu/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
0102030MWh20212022202320242025

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.
0%1%2%3%2021202220232024202520263.3% · 12 mo

Heat rate by year

Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
8,00010,00012,00014,000202220232024202520269,994 Btu/kWh · 12 mo
Annual data table
YearNet GWhCapacity factorHeat rate (Btu/kWh)
202100.1%—
20220.33.2%14,703
20230.32.8%14,736
20240.22.3%14,568
20250.33.3%9,994

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 IDTechnologyPrime moverNameplate MWSummer MWOnlineStatusPlanned retirementOEM / model
GEN1Natural Gas Internal Combustion EngineIC0.40.4Oct 2021Operating—coming soon
GEN2Natural Gas Internal Combustion EngineIC0.40.4Oct 2021Operating—coming soon
GEN3Natural Gas Internal Combustion EngineIC0.40.4Oct 2021Operating—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, LLC100.0%1 MW

Nearby plants

Within 80 km.
Pueblo BA20 MW3.2 km
Regis Escondido10 MW3.3 km
Fort Duncan BESS103 MW7.7 km
Eagle Pass10 MW15.7 km
Serrano BESS—16.4 km
Anacacho Wind Farm, LLC100 MW64.9 km