Martin Lake — 2,380 MW coal plant, Rusk County, TX

Martin Lake — 2,380 MW coal plant, Rusk County, TX · Ask the Grid

Generation and physical site

EIA plant 6146 · Inventory for Sep 2026.

Reported operating nameplate by technology

Coal: 2,379.6 MW

Operating generators only. Battery power is in MW; stored energy is in MWh. These ratings do not establish a shared export limit.

Generator records (4)

EIA generator status and nameplate capacity for Martin Lake
Generator	Technology	Status	Power (MW)	Energy (MWh)
1	Conventional Steam Coal	Operating	793.2	Unknown
2	Conventional Steam Coal	Operating	793.2	Unknown
3	Conventional Steam Coal	Operating	793.2	Unknown
4	Conventional Steam Coal	canceled_or_postponed	800	Unknown

Physical map location · OpenStreetMap: 32.25831, -94.57409
Filed location · EIA: 32.26060, -94.57060

Sources and observation dates

Inventory source: EIA-860M workbook (preliminary)
EIA reporting month: Sep 2026
EIA retrieved: Oct 24, 2026
OSM extract: Oct 9, 2026
OSM last mapped edit: Jan 29, 2024
Map prepared: Oct 24, 2026
Field verification: Not reported

Reporting month describes the inventory. Retrieval and map preparation describe processing; an OSM edit does not establish an in-service date.

EIA source inventory

Units and generators

Current generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
1	793.2 MW 815 MW summer	Conventional Steam Coal ST	May 1977	Operating
2	793.2 MW 820 MW summer	Conventional Steam Coal ST	May 1978	Operating
3	793.2 MW 820 MW summer	Conventional Steam 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; Conventional Steam Coal
National rank: #14; of 205 operating peers
TX rank: #2; of 11 operating peers

Monthly generation

Download CSV

Latest 12 months

10.04 TWh

Reported net generation

Latest report

Jul 2026

EIA-923 monthly filing

2025 capacity factor

40.9%

Using current reported nameplate capacity

Monthly 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 Aug 28, 2026

Avg output

1,716 MW

Peak output

2,478 MW

Capacity factor

69%

Uptime

96%

Capacity factor is average output vs. this plant's observed peak.

Output by hourlocal time · 90 days through Aug 28, 2026

0:006:0012:0018:0024:00

Latest disclosed outputhourly · 2 weeks ending Aug 28, 2026

Generation from ERCOT's 60-Day SCED Disclosure (≈60-day lag), summed over this site's market resources.

Settlement price economics

Observed ERCOT settlement prices at MLSES_UNIT1 over 365 days (2025-10-26 to 2026-10-25). This plant is also crosswalked to MLSES_UNIT2, MLSES_UNIT3; the point with the deepest price history is shown.

Average price: $29.64/MWh
Hourly range: -$1,263 to $1,375
Negative price hours: 294
TB2 spread benchmark: $57.5/kW-yr

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.

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.

Parties and identifiers

OrganizationRoleBasis

Vistra Corp.Parent companyparent_company

Oncor Electric DeliveryTransmission ownertransmission_owner

MLSES_UNIT1, MLSES_UNIT2, MLSES_UNIT3Market resourcesLinked ERCOT resources.

Reporting portfolio

EIA reporting entity

Luminant Generation Company LLC

Entity 55983

Operating portfolio

13 plants

2 states

Reported capacity

11,291.7 MW

Batteries · Conventional Steam Coal · Natural Gas Fired Combined Cycle

Largest reported plants in this 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

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

May 1977
May 1977
Generator enters operationEIA-860
EIA-860 lists generator 1 with this operating date.
May 1978
May 1978
Generator enters operationEIA-860
EIA-860 lists generator 2 with this operating date.
Apr 1979
Apr 1979
Generator enters operationEIA-860
EIA-860 lists generator 3 with this operating date.
View 1 more milestoneHide 1 milestone
1. Nov 27, 2024
  Nov 27, 2024
  Unit 1 Firekltv.com
  Electrical fire on the Unit 1 mezzanine; no injuries.
Oct 28, 2025
Oct 28, 2025
765-kV Eastern Backbone under ERCOT reviewercot.com
Proposed new Martin Lake 765-kV switchyard; project ISD 2030-2032.
Apr 8, 2026
Apr 8, 2026
Federal operating permit renewaltceq.texas....
TCEQ statement of basis for renewal of permit O53.
Aug 28, 2026
Aug 28, 2026
Latest disclosed generation interval
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.

Sources

PublisherReferenceType

U.S. Energy Information AdministrationEIA-860 generator inventoryFederal registry

U.S. Energy Information AdministrationEIA-923 generation filingsFederal filing

ERCOTERCOT 60-Day SCED disclosureMarket disclosure

Common questions about Martin Lake

Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.

How big is Martin Lake?

Martin Lake reports 2,379.6 MW coal of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.

What kind of plant is Martin Lake?

Martin Lake is a Conventional Steam Coal facility in Rusk County, TX, participating in the ERCOT market.

Where is Martin Lake located?

Martin Lake is in Rusk County, TX, inside the ERCOT balancing area.

Who operates Martin Lake?

Martin Lake is operated by Luminant Generation Company LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Martin Lake generate?

Martin Lake reported 10,040 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.

How does Martin Lake compare to other plants?

By capacity, Martin Lake ranks #14 of 205 operating plants of the same technology nationally. It ranks #2 of 11 in TX.

Co-located assets

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.

Oak Hill - Dry CreekSolar PhotovoltaicSolar Photovoltaic200 MW16 km

Overview

Infrastructure record

Overview

Infrastructure record

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Structured profile

Generation and physical site

Reported operating nameplate by technology

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