Midlothian Energy Facility
VistraEllis County
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.
Mapped infrastructure geometry associated with this asset.
EIA Form 860
EIA inventory for Sep 2026
PUCT PGC registration 20014
PUCT ownership filing
EIA plant 55091 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| STK1 | Natural Gas Fired Combined Cycle | Operating | 289 | Unknown |
| STK2 | Natural Gas Fired Combined Cycle | Operating | 289 | Unknown |
| STK3 | Natural Gas Fired Combined Cycle | Operating | 289 | Unknown |
| STK4 | Natural Gas Fired Combined Cycle | Operating | 289 |
Similar plants ranked by technology, capacity, and distance.
Current 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 CS | May 2000 | Operating |
| STK2 | 289 MW 270 MW summer | Natural Gas Fired Combined Cycle CS | May 2000 | Operating |
| STK3 | 289 MW 270 MW summer | Natural Gas Fired Combined Cycle CS | Jul 2000 | Operating |
| STK4 | 289 MW 270 MW summer | Natural Gas Fired Combined Cycle CS | Sep 2000 | Operating |
| STK5 | 289 MW | |||
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.
Project milestones and public references behind the asset profile.
EIA-860 lists generator STK1, generator STK2 with this operating date.
Federal Operating Permit O1869
87.824 acres · Midlothian Energy LLC
| Unknown |
| STK5 | Natural Gas Fired Combined Cycle | Operating | 289 | Unknown |
|---|
| STK6 | Natural Gas Fired Combined Cycle | Operating | 289 | Unknown |
|---|
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
6 ERCOT market resources · Gas turbine
Capacity factor is average output vs. this plant's observed peak.
Observed ERCOT settlement prices at MDANP_CT1_2 over 365 days (2025-10-26 to 2026-10-25). This plant is also crosswalked to MDANP_CT3_4, MDANP_CT5_6; 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.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
EIA-860 lists generator STK3 with this operating date.
EIA-860 lists generator STK4 with this operating date.
EIA-860 lists generator STK5 with this operating date.
EIA-860 lists generator STK6 with this operating date.
Midlothian Energy LLC filed a minor revision for O1869 covering Spring 2024 combustion-turbine component upgrades.
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.
Midlothian Energy Facility reports 1,734 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Midlothian Energy Facility is a Natural Gas Fired Combined Cycle facility in Ellis County, TX, participating in the ERCOT market.
Midlothian Energy Facility is in Ellis County, TX, inside the ERCOT balancing area.
Midlothian Energy Facility is operated by Midlothian Energy LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Midlothian Energy Facility reported 7,339.2 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
Midlothian Energy Facility interconnects at Midlothian Energy Facility.
By capacity, Midlothian Energy Facility ranks #14 of 540 operating plants of the same technology nationally. It ranks #2 of 68 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.
