Martin Lake is a three-unit coal-fired steam station near Tatum in Rusk County, Texas. EIA reports 2,410 MW of net summer capability for Plant 6146, and ERCOT identifies the generators as MLSES_UNIT1, MLSES_UNIT2, and MLSES_UNIT3. Luminant Generation Company operates the Vistra-owned station. The units entered service from 1977 through 1979; Unit 1 returned to service in February 2026 after a November 2024 fire.
EIA-reported net summer capability; other nameplate and seasonal ratings may differ.
Primary generation technology.
Rusk County · ERCOT
Martin Lake is operating.
MLSES_UNIT1 · MLSES_UNIT2 · MLSES_UNIT3
ERCOT lists all three MLSES resources as operating; Unit 1 returned to service in February 2026.
Vistra is the parent company.
Units entered service in 1977, 1978, and 1979.
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 793.2 MW 800 MW summer | Conventional Steam Coal Subbituminous Coal · ST | May 1977 | Operating |
| 2 | 793.2 MW 805 MW summer | Conventional Steam Coal Subbituminous Coal · ST | May 1978 | Operating |
| 3 | 793.2 MW 805 MW summer | Conventional Steam Coal Subbituminous Coal · ST | Apr 1979 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
EIA-860 lists generator 1 with this operating date.
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
3 ERCOT market resources · Coal / lignite
Capacity factor is average output vs. this plant's observed peak.
Observed ERCOT settlement prices at MLSES_UNIT1 over 363 days (2025-09-11 to 2026-09-10). This plant is also crosswalked to MLSES_UNIT2, MLSES_UNIT3; the point with the deepest price history is shown.
The TB2 figure is a price benchmark, not revenue: it values one perfect-foresight cycle per day between the 2 cheapest and 2 dearest hours of each day, gross of round-trip losses, and excludes ancillary services and any physical dispatch constraint. It describes what this node’s price shape was worth over the window — it is not this asset’s realized capture, and no dispatch is assumed or modelled.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Comanche Peak | 2,430 MW | TX | |
| Martin LakeCurrent | 2,379.6 MW | TX | |
| Oak Grove (TX) | 1,795.4 MW | TX | |
| Lake Hubbard | 927.5 MW | TX | |
| Stryker Creek | 713.4 MW | TX | |
| Graham | 634.7 MW | TX | |
| DeCordova Steam Electric Station | 626.7 MW | TX | |
| Morgan Creek | 536.4 MW | TX |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioEIA-860 lists generator 2 with this operating date.
EIA-860 lists generator 3 with this operating date.
EPA lists Martin Lake’s Part B alternate-liner demonstration as withdrawn.
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Martin Lake has a reported capacity of 2,379.6 MW. Source: EIA Form 860.
Martin Lake is a Conventional Steam Coal facility in Rusk County, TX, participating in the ERCOT market.
Martin Lake is in Rusk County, TX, inside the ERCOT balancing area.
Martin Lake is operated by Luminant Generation Company LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Martin Lake reports a commercial operation date of 1977. Current status: operating. Source: EIA Form 860.
Martin Lake reported 9,480.3 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
Martin Lake settles at MLSES_UNIT1, interconnects at Martin Lake 345-kV Substation, on the Oncor Electric Delivery system.
By capacity, Martin Lake ranks #14 of 206 operating plants of the same technology nationally. It ranks #2 of 11 in TX.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
