# Midlothian Energy Facility

ERCOT asset profile · https://askthegrid.com/assets/facilities/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.

## 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.

## Metrics

- **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

## Facts

- **Net summer capability:** 1,620 MW — EIA Form 860 · confidence: high
- **Nameplate capacity:** 1,734 MW — Six generators · confidence: high
- **Owner / operator:** Midlothian Energy LLC — PUCT PGC registration 20014 · confidence: high
- **Ultimate parent:** Vistra Corp. — PUCT ownership filing · confidence: high
- **TCEQ regulated entity:** RN102596400 — Federal Operating Permit O1869 · confidence: high
- **Coordinate parcel:** 216908 — 87.824 acres · Midlothian Energy LLC · confidence: high

## Related parties

- **Owner / operator:** Vistra — Owner / operator for Midlothian Energy Facility ([source](https://vistracorp.com/))

## Sources

- [EIA operating record](https://www.eia.gov/electricity/data/eia860/) — U.S. Energy Information Administration · regulatory — Plant identity, six units, technology, and capacity by reporting basis.
- [PUCT ownership filing](https://interchange.puc.texas.gov/Documents/48287_1_976885.PDF) — Public Utility Commission of Texas · regulatory — PGC registration 20014 and the 100% Vistra ownership chain.
- [Midlothian Title V record](https://www.tceq.texas.gov/assets/public/permitting/air/reports/applications/36509-tc.pdf) — Texas Commission on Environmental Quality · regulatory — RN102596400, O1869, address, operator, and 2024 turbine-component upgrades.
- [Alstom turnkey EPC record](https://www.alstom.com/press-releases-news/2004/8/ALSTOM-signs-long-term-parts-and-service-agreement-in-US-20040831) — Alstom · primary — Official EPC and GT24 fleet record for Midlothian.

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Canonical page: https://askthegrid.com/assets/facilities/midlothian-energy-facility
Website: [Vistra](https://vistracorp.com/)
Profile published: 2026-07-17T03:34:33.810Z
Source: Ask the Grid — https://askthegrid.com/