Martin Lake
Luminant · Rusk County · ERCOT
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.
Overview
Key fields
- Reported capacity
- 2,410 MW
EIA-reported net summer capability; other nameplate and seasonal ratings may differ.
- Technology
- Conventional Steam Coal
Primary generation technology.
- Registry anchor
- Plant 6146
Rusk County · ERCOT
- Operating status
- Operating
Martin Lake is operating.
- Resource stack
- 3 resources
MLSES_UNIT1 · MLSES_UNIT2 · MLSES_UNIT3
Profile
- Grid role
- Three conventional steam coal generators in the ERCOT North zone.
- Plant configuration
- Three conventional steam coal generators entered service in 1977, 1978, and 1979. Vistra reports 2,250 MW of plant nameplate capacity, while EIA reports 2,410 MW of net summer capability. EPA records identify cold-side electrostatic precipitators, wet flue-gas-desulfurization systems, and activated-carbon injection on all three units.
- Grid connection
- ERCOT resource nodes MLSES_UNIT1, MLSES_UNIT2, and MLSES_UNIT3; the existing Martin Lake 345-kV substation is owned by Oncor Electric Delivery.
- Environmental controls
- EPA records identify cold-side ESP, wet-scrubber, and activated-carbon-injection controls. Fluor announced EPC work for SNCR and activated-carbon-injection projects at Martin Lake in 2008.
Structured profile
- Operating status
- Operating
ERCOT lists all three MLSES resources as operating; Unit 1 returned to service in February 2026.
- Owner / operator
- Luminant Generation Company LLC
Vistra is the parent company.
- Plant configuration
- 3 coal steam units
Units entered service in 1977, 1978, and 1979.
Units and generators
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 |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 2,379.6 MW
- National rank
- #14
- TX rank
- #2
Monthly generation
Download CSVMonthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
ERCOT disclosed dispatch
3 ERCOT market resources · Coal / lignite
Generation
3 mo through May 22, 2026Capacity factor is average output vs. this plant's observed peak.
Output by hourlocal time · 90 days through May 22, 2026
Latest disclosed outputhourly · 2 weeks ending May 22, 2026
Generation from ERCOT's 60-Day SCED Disclosure (≈60-day lag), summed over this site's market resources.
Grid and market context
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Market registration
ERCOT public disclosuresOperating context
ERCOT market recordsNearby substations
HIFLD infrastructure inventoryCommercial, land, and environmental record
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Land and environmental record
Related parties and identifiers
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
Relationship graph
Drag organizations to explore the network. Select a node to pin its details and available page link.
Parties and identifiers
| Relationship | Entity | Basis |
|---|---|---|
| Operator | Operator for Martin Lake | |
| Market resources | MLSES_UNIT1, MLSES_UNIT2, MLSES_UNIT3 | Linked ERCOT resources. |
| Grid selection | plant:plant-6146 | Canonical asset page /ercot/assets/plant/martin-lake. |
Reporting portfolio
| 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 portfolioTimeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Generator enters operationEIA-860
EIA-860 lists generator 1 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator 2 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator 3 with this operating date.
- CCR alternate-liner application withdrawnEPA CCR Par...
EPA lists Martin Lake’s Part B alternate-liner demonstration as withdrawn.
- Latest disclosed generation interval
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Sources
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