Knox Lee
Gregg County, Texas · EIA plant ID 3476 · Operator: Southwestern Electric Power Co
×76 MW natural gas retired since 2020 (latest May 2020)
Nameplate351MWSummer 342 MW
Generators1in service
Net generation546GWh12 mo to Dec 2025
Capacity factor18%gas/coal/oil units, summer MW
Heat rate11,653Btu/kWhfossil units, electric fuel, HHV
First online1974Runs as peaking
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
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.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 1,021.1 | 24.3% | 10,373 |
| 2002 | 618.5 | 14.5% | 11,052 |
| 2003 | 623 | 14.6% | 10,856 |
| 2004 | 430.1 | 10.1% | 11,758 |
| 2005 | 561 | 13.2% | 11,455 |
| 2006 | 533.6 | 12.6% | 12,079 |
| 2007 | 364 | 8.6% | 12,274 |
| 2008 | 299.5 | 7.0% | 12,560 |
| 2009 | 364.3 | 8.5% | 12,661 |
| 2010 | 421.1 | 9.8% | 12,062 |
| 2011 | 587.9 | 14.2% | 12,233 |
| 2012 | 608.5 | 14.7% | 12,139 |
| 2013 | 253.2 | 6.1% | 12,839 |
| 2014 | 178.9 | 4.3% | 12,935 |
| 2015 | 102.5 | 2.5% | 12,789 |
| 2016 | 136.8 | 3.3% | 12,451 |
| 2017 | 51.9 | 1.3% | 12,283 |
| 2018 | 142.9 | 3.5% | 12,044 |
| 2019 | 107.9 | 3.1% | 12,436 |
| 2020 | 132.4 | 4.2% | 11,911 |
| 2021 | 185.2 | 6.2% | 12,023 |
| 2022 | 364.3 | 12.2% | 11,234 |
| 2023 | 476.6 | 15.9% | 11,223 |
| 2024 | 321.3 | 10.7% | 12,030 |
| 2025 | 546.1 | 18.2% | 11,653 |
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 ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 5 | Natural Gas Steam Turbine | ST | 351 | 342 | Apr 1974 | Operating | — | coming soon |
| 2 | Natural Gas Steam Turbine | ST | 38 | 31 | Dec 1950 | Retired May 2020 | — | coming soon |
| 3 | Natural Gas Steam Turbine | ST | 38 | 25 | Jun 1952 | Retired May 2020 | — | coming soon |
| 4 | Natural Gas Steam Turbine | ST | 74 | 73 | Mar 1956 | Retired Dec 2018 | — | coming soon |
Owner / operator
Operator: Southwestern Electric Power Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Southwestern Electric Power Co | 100.0% | 351 MW |
Nearby plants
Within 80 km.
| Eastman Cogeneration Facility | 468 MW | 9.2 km |
| Martin Lake | 2,380 MW | 14.5 km |
| Pirkey | retired | 17.4 km |
| Hallsville | — | 17.4 km |
| Harrison County Power Project | 570 MW | 19.3 km |
| Oak Hill - Dry Creek | 200 MW | 20.3 km |