Martin Lake
Rusk County, Texas · EIA plant ID 6146 · Operator: Luminant Generation Company LLC
Nameplate2,380MWSummer 2,455 MW
Generators3in service
Net generation9,244GWh12 mo to Aug 2026
Capacity factor47%gas/coal/oil units, summer MW
Heat rate11,443Btu/kWhfossil units, electric fuel, HHV
First online1977Runs as baseload
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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 | 15,224 | 77.2% | 11,523 |
| 2002 | 14,825 | 75.2% | 11,423 |
| 2003 | 16,286.3 | 82.6% | 11,636 |
| 2004 | 17,238.7 | 87.2% | 11,462 |
| 2005 | 18,250.2 | 92.6% | 10,915 |
| 2006 | 17,821.2 | 90.4% | 10,890 |
| 2007 | 18,073.9 | 91.7% | 11,037 |
| 2008 | 17,737.4 | 83.5% | 11,210 |
| 2009 | 17,065.6 | 80.6% | 11,003 |
| 2010 | 17,666.6 | 83.2% | 11,067 |
| 2011 | 17,619.4 | 83.5% | 11,029 |
| 2012 | 14,755.3 | 69.7% | 11,312 |
| 2013 | 15,253 | 72.3% | 10,993 |
| 2014 | 13,601.3 | 64.4% | 11,219 |
| 2015 | 9,975.5 | 47.3% | 11,687 |
| 2016 | 11,241.2 | 53.1% | 11,736 |
| 2017 | 12,594.7 | 59.7% | 11,384 |
| 2018 | 14,049.8 | 66.5% | 11,178 |
| 2019 | 12,150 | 57.6% | 11,347 |
| 2020 | 12,881.5 | 60.9% | 11,412 |
| 2021 | 13,179.5 | 62.4% | 11,424 |
| 2022 | 12,592.1 | 59.7% | 11,415 |
| 2023 | 11,322.2 | 53.6% | 11,393 |
| 2024 | 9,741.1 | 46.0% | 11,882 |
| 2025 | 8,534.3 | 39.7% | 11,472 |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Steam Coal | ST | 793.2 | 815 | May 1977 | Operating | — | coming soon |
| 2 | Conventional Steam Coal | ST | 793.2 | 820 | May 1978 | Operating | — | coming soon |
| 3 | Conventional Steam Coal | ST | 793.2 | 820 | Apr 1979 | Operating | — | coming soon |
Owner / operator
Operator: Luminant Generation Company LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Luminant Generation Company LLC | 100.0% | 2,380 MW |
Nearby plants
Within 80 km.
| Knox Lee | 351 MW | 14.5 km |
| Oak Hill - Dry Creek | 200 MW | 16.5 km |
| Harrison County Power Project | 570 MW | 19.6 km |
| Hallsville | — | 23.7 km |
| Pirkey | retired | 23.7 km |
| Eastman Cogeneration Facility | 468 MW | 23.7 km |