Midlothian Energy Facility
Midlothian Energy LLC · Ellis County · ERCOT
Midlothian Energy Facility is a six-unit natural-gas combined-cycle plant in Ellis County, Texas, registered as EIA Plant ID 55091. EIA reports 1,734 MW of nameplate capacity, 1,620 MW of net summer capability, and 1,710 MW of net winter capability. ERCOT maps six operating resources, MDANP_CT1 through MDANP_CT6, to three paired settlement points. Midlothian Energy LLC owns and operates the facility and is a wholly owned Vistra subsidiary.
Overview
Key fields
- Net summer capability
- 1,620 MW
EIA operating capability.
- Nameplate / winter
- 1,734 / 1,710 MW
EIA nameplate and net winter ratings.
- Technology
- Combined cycle
Six natural-gas units.
- Registry anchor
- Plant 55091
Midlothian Energy LLC · Ellis County · ERCOT
- First resource in service
- Jan 22, 2001
MDANP_CT3.
- Resource stack
- 6 resources
MDANP_CT1 · MDANP_CT2 · MDANP_CT3
Profile
- ERCOT configuration
- Six operating combined-cycle resources at three paired MDANP settlement points.
- Equipment
- Alstom was the turnkey EPC supplier and identifies Midlothian as part of the GT24 combined-cycle fleet.
- Current ownership
- Midlothian Energy LLC is the registered owner and operator; Vistra Corp. is the ultimate parent.
Structured profile
- Net summer capability
- 1,620 MW
EIA Form 860
- Nameplate capacity
- 1,734 MW
Six generators
- Owner / operator
- Midlothian Energy LLC
PUCT PGC registration 20014
- Ultimate parent
- Vistra Corp.
PUCT ownership filing
- TCEQ regulated entity
- RN102596400
Federal Operating Permit O1869
- Coordinate parcel
- 216908
87.824 acres · Midlothian Energy LLC
Units and generators
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| STK1 | 289 MW 270 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CS | May 2000 | Operating |
| STK2 | 289 MW 270 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CS | May 2000 | Operating |
| STK3 | 289 MW 270 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CS | Jul 2000 | Operating |
| STK4 | 289 MW 270 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CS | Sep 2000 | Operating |
| STK5 | 289 MW 270 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CS | Aug 2001 | Operating |
| STK6 | 289 MW 270 MW summer | Natural Gas Fired Combined Cycle Natural Gas · CS | Sep 2001 | Operating |
Performance
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Peer context
- Technology capacity
- 1,734 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
6 ERCOT market resources · Gas turbine
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 |
|---|---|---|
| Owner / operator | Owner / operator for Midlothian Energy Facility | |
| Market resources | MDANP_CT1, MDANP_CT2, MDANP_CT3, MDANP_CT4, MDANP_CT5 | 6 linked ERCOT resources. |
| Grid selection | plant:plant-55091 | Canonical asset page /ercot/assets/plant/midlothian-energy-facility. |
Reporting portfolio
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Timeline and sources
Project milestones and public references behind the asset profile.
Project timeline
- Generators enter operationEIA-860
EIA-860 lists generator STK1, generator STK2 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator STK3 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator STK4 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator STK5 with this operating date.
- Generator enters operationEIA-860
EIA-860 lists generator STK6 with this operating date.
- Title V minor-revision application filedMidlothian ...
Midlothian Energy LLC filed a minor revision for O1869 covering Spring 2024 combustion-turbine component upgrades.
- Latest disclosed generation interval
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Sources
Related assets
Similar plants ranked by technology, capacity, and distance.
Forney Energy Center
Natural Gas · 1,770 MW
Kaufman County
Temple Power Station
Natural Gas · 1,580 MW
Bell County
Wolf Hollow II
Natural Gas · 1,103.4 MW
Hood County
Jack County
Natural Gas · 1,241 MW
Wise County