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Greens Bayou

Harris County, Texas · EIA plant ID 3464 · Operator: NRG Texas Power LLC
Natural gasNatural Gas Fired Combustion TurbineERCOTBA: ERCO
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Nameplate432MWSummer 327 MW
Generators6in service
Net generation18GWh12 mo to Dec 2025
Capacity factor1%gas/coal/oil units, summer MW
Heat rate15,711Btu/kWhfossil units, electric fuel, HHV
First online1976Runs as rarely runs

Monthly net generation

EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
-50050100GWh2001200320052007200920112013201520172019202120232025

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%3%5%8%200520102015202020250.6% · 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.
10,00015,00020,00025,0002005201020152020202515,711 Btu/kWh · 12 mo
Annual data table
YearNet GWhCapacity factorHeat rate (Btu/kWh)
2001630.7——
2002277.3——
2003293.74.4%13,017
2004197.73.0%14,410
2005167.62.5%14,019
2006299.24.5%13,839
20072193.3%14,069
2008126.31.9%16,118
2009154.72.3%14,310
2010184.92.8%13,952
2011352.85.3%13,659
201292.11.4%14,247
201365.11.0%15,995
2014801.2%16,097
201594.61.4%14,428
201615.90.2%26,022
201760.1%—
2018490.7%14,476
2019158.65.5%15,320
2020110.93.8%15,082
2021213.37.4%15,420
2022211.97.4%13,865
202392.33.2%14,997
202437.11.3%15,158
202517.60.6%15,711

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
73Natural Gas Fired Combustion TurbineGT7257Dec 1976Operating—coming soon
74Natural Gas Fired Combustion TurbineGT7253Dec 1976Operating—coming soon
81Natural Gas Fired Combustion TurbineGT7253Dec 1976Operating—coming soon
82Natural Gas Fired Combustion TurbineGT7247Dec 1976Operating—coming soon
83Natural Gas Fired Combustion TurbineGT7261Dec 1976Operating—coming soon
84Natural Gas Fired Combustion TurbineGT7256Dec 1976Operating—coming soon
5Natural Gas Steam TurbineST446.4406Jun 1973Retired Dec 2017—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%432 MW

Nearby plants

Within 80 km.
Greens Bayou 6—0.2 km
TX Houston 7080 Express Lane2 MW2.7 km
WAL35001 MW5.5 km
Rentech Nitrogen Pasadena Cogeneration15 MW9.5 km
Channelview Cogeneration Plant918 MW9.6 km
Optim Energy Altura Cogen LLC644 MW10.8 km