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1849.8 MW Sub. Coal operating in Limestone, TX — Electric Reliability Council of Texas, Inc.
1,849.8 MW
Nameplate Capacity
2
Generators
units
Conventional Steam Coal
Technology
1985
Operating Since
Coordinates
31.4219, -96.2525
County
Limestone, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | NRG Texas Power LLC | NRG Texas Power | — |
| Owner(s) | NRG Texas Power LLC | NRG Energy | — |
| Status | Operating | — | — |
Limestone Generating Station is a coal-fired power plant in the United States, one of the largest in Texas. In 2022 it was the 6th largest emitter of carbon dioxide in the state. In 2022 there was an underground fire of a conveyor belt linking from a disused mine. It is one of 3 most NOx emitting power plants in Texas.
Read more on WikipediaThe Limestone power plant is located in Limestone County, Texas. It is a conventional steam coal plant with a total capacity of 1849.8 MW across two generators. The plant began operating in 1985 and is owned by NRG Energy, with NRG Texas Power LLC as the operator. Limestone is the second-largest coal plant in Texas (out of 8) and the ninth-largest in the United States (out of 75).
In the most recent year with available data, Limestone generated 7,523,395 MWh of electricity, resulting in a capacity factor of 46.3%. The plant operates within the Electric Reliability Council of Texas (ERCOT) balancing authority, which falls under the Texas Reliability Entity (TRE) NERC region.
Generated from EIA, GEM, and public data sources
ISO/RTO
ERCOT
Market
ISO/RTO Member
NERC Region
TRE — Texas Reliability Entity
Balancing Authority
428.1K MWh
Latest Month
7.5M MWh
Annual Generation
46.3%
Capacity Factor
CO₂ Intensity
2388 lb/MWh
NOx
2 lb/MWh
SO₂
Point of Interconnection
Nearest Substation
Limestone Station · 345 kV
Substation Distance
< 10 km
Operator
CenterPoint Energy
Coord Source
OSM spatial
Market Position
ISO/RTO Market
ERCOT
LMP Node
LEG_LEG_G2
Pricing Hub
HB_NORTH
Alt. Hub / Zone
LZ_NORTH
Location Type
Resource Node
Node Source
EIA-860 direct report
Last updated 2026-03-26
View all 5 articlesElectric Reliability Council of Texas, Inc. (ERCO)
Grid Voltage
345.0 kV
Regulatory Status
NR — Non-Regulated
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
2 lb/MWh
CH₄
0.295 lb/MWh
N₂O
0.043 lb/MWh
Capacity Factor
37.4%
Annual Net Gen
6059 GWh
CO₂eq
2408 lb/MWh
Subregion
ERCOT All