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351 MW Natural Gas operating in Gregg, TX — Southwest Power Pool
351 MW
Nameplate Capacity
1
Generators
unit
Natural Gas Steam Turbine
Technology
1974
Operating Since
Coordinates
32.3766, -94.6415
County
Gregg, TX
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Southwestern Electric Power Co | Southwestern Electric Power | — |
| Owner(s) | Southwestern Electric Power Co | American Electric Power Company | — |
| Status | Operating | — | — |
The Knox Lee power plant is a 351 MW natural gas-fired power plant located in Gregg County, Texas. The plant began operating in 1974 and utilizes a single natural gas steam turbine generator. It is owned by American Electric Power Company and operated by Southwestern Electric Power Co. Knox Lee is ranked as the 101st largest power plant in Texas out of 144, and 594th nationally out of 945 plants.
The plant operates within the Southwest Power Pool (SPP) balancing authority and the Midwest Reliability Organization (MRO) NERC region. In its latest year of reported generation, Knox Lee produced 321,255 MWh of electricity, achieving a capacity factor of 10.3%. Financial data indicates an installed cost of $138.31 per kW, according to FERC filings.
Generated from EIA, GEM, and public data sources
ISO/RTO
SPP
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
20.8K MWh
Latest Month
321.3K MWh
Annual Generation
10.3%
Capacity Factor
CO₂ Intensity
1265 lb/MWh
NOx
2 lb/MWh
SO₂
Steam turbine · Southwestern Electric Power Company · Data from 2015–2024
$198/kW
Installed Cost
$-185/kW
Annual CapEx
$58.7/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Point of Interconnection
Nearest Substation
Knox Lee · 138 kV
Substation Distance
0 km
Coord Source
OSM spatial
Market Position
ISO/RTO Market
SPP
LMP Node
CSWKNOXLEE5
Pricing Hub
SPP South Hub
Location Type
Settlement Location
Node Source
Curated node match
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Southwest Power Pool (SWPP)
Grid Voltage
138.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
0.006 lb/MWh
CH₄
0.025 lb/MWh
N₂O
0.002 lb/MWh
Capacity Factor
15.5%
Annual Net Gen
477 GWh
CO₂eq
1266 lb/MWh
Subregion
SPP South