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T H Wharton

Harris County, Texas · EIA plant ID 3469 · Operator: NRG Texas Power LLC
Natural gasNatural Gas Fired Combined CycleNatural Gas Fired Combustion TurbineERCOTBA: ERCO
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Nameplate1,190MWSummer 1,002 MW
Generators17in service
Net generation637GWh12 mo to Aug 2026
Capacity factor7%gas/coal/oil units, summer MW
Heat rate10,649Btu/kWhfossil units, electric fuel, HHV
First online1967Runs as peaking

The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.

Monthly net generation

EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
-1000100200300GWh2001200320052007200920112013201520172019202120232025

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%200520102015202020257.2% · 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.
9,0009,50010,00010,50011,0002005201020152020202510,649 Btu/kWh · 12 mo
Annual data table
YearNet GWhCapacity factorHeat rate (Btu/kWh)
20012,172.1——
20021,757.5——
20031,74415.9%9,664
20041,656.115.0%9,546
20051,630.215.1%9,381
20061,919.821.4%9,324
20071,202.913.4%9,529
2008912.910.1%9,600
20091,104.212.3%9,729
2010959.110.7%9,648
20111,338.214.9%9,795
2012552.16.1%10,034
2013262.52.9%9,856
2014282.73.1%10,209
2015782.68.7%9,746
2016490.85.5%10,053
20174374.9%9,954
2018572.56.4%10,884
2019928.210.3%10,452
2020833.29.3%10,561
20211,55817.3%10,020
20221,525.417.3%10,129
2023955.410.9%10,700
2024671.87.6%10,315
2025798.89.1%10,193

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
3Natural Gas Fired Combined CycleCA113.1110Aug 1974Operating—coming soon
31Natural Gas Fired Combined CycleCT5454Jul 1972Operating—coming soon
32Natural Gas Fired Combined CycleCT5454Jul 1972Operating—coming soon
33Natural Gas Fired Combined CycleCT5454Jul 1972Operating—coming soon
34Natural Gas Fired Combined CycleCT5454Jul 1972Operating—coming soon
4Natural Gas Fired Combined CycleCA113.1110Aug 1974Operating—coming soon
41Natural Gas Fired Combined CycleCT5454Jul 1972Operating—coming soon
42Natural Gas Fired Combined CycleCT5454Jul 1972Operating—coming soon
43Natural Gas Fired Combined CycleCT56.754Aug 1974Operating—coming soon
44Natural Gas Fired Combined CycleCT56.754Aug 1974Operating—coming soon
51Natural Gas Fired Combustion TurbineGT8556Nov 1975Operating—coming soon
52Natural Gas Fired Combustion TurbineGT8556Nov 1975Operating—coming soon
53Natural Gas Fired Combustion TurbineGT8556Nov 1975Operating—coming soon
54Natural Gas Fired Combustion TurbineGT8556Nov 1975Operating—coming soon
55Natural Gas Fired Combustion TurbineGT8556Nov 1975Operating—coming soon
56Natural Gas Fired Combustion TurbineGT8556Nov 1975Operating—coming soon
GT1Natural Gas Fired Combustion TurbineGT16.314Jul 1967Operating—coming soon
G1Natural Gas Fired Combustion TurbineGT16.313Jul 1967not_current—coming soon
2Natural Gas Steam TurbineST247.8229Jun 1960Retired Dec 2005—coming soon

Owner / operator

Operator: NRG Texas Power LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
NRG Texas Power LLC100.0%1,190 MW

Nearby plants

Within 80 km.
NRG THW GT Electric Generating Station377 MW0.3 km
Cutten9 MW1.7 km
WAL32971 MW7.3 km
HEB000991 MW7.4 km
WAL11031 MW7.6 km
Regis Gears Harris10 MW8.8 km