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T H Wharton

Natural gas power plant · Harris County, Texas

Nameplate capacity
1,190 MW
Rank in Texas
#19
of 1,071 plants
In service since
1967
July 1967

Details

Primary fuel
Natural gas
Technology
Natural Gas Fired Combined Cycle
Operator
NRG Texas Power LLC
County
Harris County
Generating units
17
Share of state capacity
0.59%
Rank among natural gas plants in Texas
#11 of 310
EIA plant code
3469

Generating units

Individual generating units at T H Wharton
UnitTechnologyNameplateSummerOnlineStatus
3Natural Gas Fired Combined Cycle113 MW110 MW1974Operating
4Natural Gas Fired Combined Cycle113 MW110 MW1974Operating
51Natural Gas Fired Combustion Turbine85 MW56 MW1975Operating
52Natural Gas Fired Combustion Turbine85 MW56 MW1975Operating
53Natural Gas Fired Combustion Turbine85 MW56 MW1975Operating
54Natural Gas Fired Combustion Turbine85 MW56 MW1975Operating
55Natural Gas Fired Combustion Turbine85 MW56 MW1975Operating
56Natural Gas Fired Combustion Turbine85 MW56 MW1975Operating
43Natural Gas Fired Combined Cycle57 MW54 MW1974Operating
44Natural Gas Fired Combined Cycle57 MW54 MW1974Operating
31Natural Gas Fired Combined Cycle54 MW54 MW1972Operating
32Natural Gas Fired Combined Cycle54 MW54 MW1972Operating
33Natural Gas Fired Combined Cycle54 MW54 MW1972Operating
34Natural Gas Fired Combined Cycle54 MW54 MW1972Operating
41Natural Gas Fired Combined Cycle54 MW54 MW1972Operating
42Natural Gas Fired Combined Cycle54 MW54 MW1972Operating
GT1Natural Gas Fired Combustion Turbine16 MW14 MW1967Operating

Nameplate is the maximum rated output; summer capacity is what the unit can reliably deliver on a hot day, which is typically lower.

Similarly sized plants in Texas

Wolf Hollow IINatural gas1,231 MW
Colorado Bend IINatural gas1,230 MW
Deer Park Energy CenterNatural gas1,176 MW
Odessa-Ector Power PlantNatural gas1,153 MW

About this data

From EIA’s inventory of operable generators, May 2026 release. Capacity is nameplate — the maximum rated output of the equipment, not what the plant actually generates over a year, which depends on how often it runs. A 1,190 MW solar plant and a 1,190 MW nuclear plant have the same entry here and produce very different amounts of electricity.

“In service since” is the earliest in-service date among the units still listed, so a site rebuilt around newer equipment can read as younger than the site itself. All Texas power plants · What Texas actually generates