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Timmerman Power Plant

Caldwell County, Texas · EIA plant ID 66335 · Operator: Lower Colorado River Authority
Natural gasNatural Gas Internal Combustion EngineERCOTBA: ERCO
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Nameplate368MWSummer 366 MW
Generators20in service
Net generation208GWh12 mo to Dec 2025
Capacity factor31%gas/coal/oil units, summer MW
Heat rate9,963Btu/kWhfossil units, electric fuel, HHV
First online2025Runs as intermediate

Monthly net generation

EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
02040GWh

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%10%20%30%2025202631.5% · 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.
9,9639,9639,963202520269,963 Btu/kWh · 12 mo
Annual data table
YearNet GWhCapacity factorHeat rate (Btu/kWh)
2025207.931.4%9,963

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
G1Natural Gas Internal Combustion EngineIC1818Aug 2025Operating—coming soon
G10Natural Gas Internal Combustion EngineIC1818Aug 2025Operating—coming soon
G11Natural Gas Internal Combustion EngineIC18.818.6Apr 2026Operating—coming soon
G12Natural Gas Internal Combustion EngineIC18.818.6Apr 2026Operating—coming soon
G13Natural Gas Internal Combustion EngineIC18.818.6Apr 2026Operating—coming soon
G14Natural Gas Internal Combustion EngineIC18.818.6Apr 2026Operating—coming soon
G15Natural Gas Internal Combustion EngineIC18.818.6Apr 2026Operating—coming soon
G16Natural Gas Internal Combustion EngineIC18.818.6Apr 2026Operating—coming soon
G17Natural Gas Internal Combustion EngineIC18.818.6Apr 2026Operating—coming soon
G18Natural Gas Internal Combustion EngineIC18.818.6Apr 2026Operating—coming soon
G19Natural Gas Internal Combustion EngineIC18.818.6Apr 2026Operating—coming soon
G2Natural Gas Internal Combustion EngineIC1818Aug 2025Operating—coming soon
G20Natural Gas Internal Combustion EngineIC18.818.6Apr 2026Operating—coming soon
G3Natural Gas Internal Combustion EngineIC1818Aug 2025Operating—coming soon
G4Natural Gas Internal Combustion EngineIC1818Aug 2025Operating—coming soon
G5Natural Gas Internal Combustion EngineIC1818Aug 2025Operating—coming soon
G6Natural Gas Internal Combustion EngineIC1818Aug 2025Operating—coming soon
G7Natural Gas Internal Combustion EngineIC1818Aug 2025Operating—coming soon
G8Natural Gas Internal Combustion EngineIC1818Aug 2025Operating—coming soon
G9Natural Gas Internal Combustion EngineIC1818Aug 2025Operating—coming soon

Owner / operator

Operator: Lower Colorado River Authority. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Lower Colorado River Authority100.0%368 MW

Nearby plants

Within 80 km.
Metro BESS—18.9 km
Hays Energy Project989 MW20.5 km
Buda BESS10 MW22.7 km
Mesquite Creek LFGTE Project3 MW25.9 km
CF BESS NINE—32.2 km
Dunlap TP 14 MW34.8 km