Knox Lee — Plant Summary
- EIA Plant ID
- 3476
- Capacity
- 351 MW
- Primary Fuel
- Natural Gas
- Technology
- Natural Gas Steam Turbine
- Status
- Operating
- Location
- Gregg, TX
- Operating Since
- 1974
- Generators
- 1
- Operator
- Southwestern Electric Power Co
- Parent Company
- American Electric Power Company
- Annual Generation
- 321,255 MWh
- Capacity Factor
- 10.3%
- Balancing Authority
- Southwest Power Pool
- ISO/RTO
- SPP
- NERC Region
- MRO
Knox Lee
OperatingNatural Gas
Ranked #101 of 313 Natural Gas plants in TX#593 of 2009 nationally
351 MW Natural Gas operating in Gregg, TX — Southwest Power Pool
EIAGEMWD
351 MW
Nameplate Capacity
1
Generators
unit
Natural Gas Steam Turbine
Technology
1974
Operating Since
Location
Coordinates
32.3766, -94.6415
County
Gregg, TX
Nearby Plants
- Eastman Cogeneration FacilityNatural Gas467.7 MW · 9.2 km
- Martin LakeSub. Coal2379.6 MW · 14.5 km
- HallsvilleNatural Gas450 MW · 17.4 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Southwestern Electric Power Co | Southwestern Electric Power | — |
| Owner(s) | Southwestern Electric Power Co | American Electric Power Company | — |
| Status | Operating | — | — |
Ownership Chain
About
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
Engineering & Generators
Grid Context
NERC Region
MRO
Balancing Authority
Southwest Power Pool
Grid Voltage
138 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
20.8K MWh
Latest Month
321.3K MWh
Annual Generation
10.3%
Capacity Factor
Jan 2022 – Dec 2024
Financial DataBeta
Source: FERC Form 1HIGH
$198/kW
Installed Cost
$58.7/MWh
Operating Cost
Southwestern Electric Power Company
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint 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
Node Source
Curated node match
News & Articles (7)Beta
General
Arne Ingvald Melson Obituary (2025) - Hallsville, TX - Rader Funeral Home of Longview
Arne Melson Obituary Arne Ingvald Melson, 76, of Hallsville, TX, passed away on December 6, 2025. Visitation will be Thursday, December 11th...
Legacy | Obituary·3 months ago
Industry·corporate
Pirkey Power Plant in Harrison County slated for shutdown in 2023
HARRISON COUNTY, Texas (KLTV) - SWEPCO's Pirkey Power Plant near Hallsville is shutting down. But not until the third quarter of 2023.
SWEPCO (operator)
KLTV.com·4 years ago
Industry·corporate
Elderville-Lakeport fire department responds to a major auto accident Monday morning
GREGG COUNTY, Texas (KETK) The Elderville-Lakeport VFD responded to a major auto accident on SH 149 near Knox Lee Power Plant,...
KETK.com·5 years ago
General
Albert Berry Obituary - Longview, TX
Celebrate the life of Albert Berry, leave a kind word or memory and get funeral service information care of Lakeview Funeral Home & Memorial...
Dignity Memorial·9 years ago
Last updated 2026-03-14
View all 7 articles