Mountain Creek Steam Electric Station is a three-unit natural-gas steam plant in Dallas, Texas. EIA's May 2026 inventory reports 852.2 MW nameplate and 808 MW net summer and winter capability. Units 6, 7, and 8 began operating in February 1956, March 1958, and July 1967, respectively. Mountain Creek Power, LLC is the registered operator and the holder of TCEQ Federal Operating Permit O58.
EIA May 2026 · three generators
135.7 MW · 136 MW · 580.5 MW
EIA May 2026
EIA 923 · 2024 calendar year
ERCOT current public listing
Mountain Creek Power, LLC
MCSES_UNIT6 · MCSES_UNIT7
EIA and TCEQ
1956 · 1958 · 1967
Non-CHP
O58 · NSR 45417
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 2 | 31.2 MW 24 MW summer | Natural Gas Steam Turbine Natural Gas · ST | — | Operating |
| 3 | 74.9 MW 70 MW summer | Natural Gas Steam Turbine Natural Gas · ST | — | Operating |
| 6 | 135.7 MW 122 MW summer | Natural Gas Steam Turbine Natural Gas · ST | Feb 1956 | Operating |
| 7 | 136 MW 118 MW summer |
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.
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Project milestones and public references behind the asset profile.
EIA reports February 1956 as the operating month for Unit 6.
| Mar 1958 |
| Operating |
| 8 | 580.5 MW 568 MW summer | Natural Gas Steam Turbine Natural Gas · ST | Jul 1967 | Operating |
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
3 ERCOT market resources · Gas steam
Capacity factor is average output vs. this plant's observed peak.
Observed ERCOT settlement prices at MCSES_UNIT6 over 363 days (2025-09-11 to 2026-09-10). This plant is also crosswalked to MCSES_UNIT7, MCSES_UNIT8; 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.
Matched to the latest available ERCOT generation-interconnection queue record. Queue status and completion dates describe the queue record; operating status is verified separately against plant and market registrations.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
EIA reports March 1958 as the operating month for Unit 7.
EIA reports July 1967 as the operating month for Unit 8.
Trafigura announced that its joint venture with Frontier Group had acquired Mountain Creek for an undisclosed amount.
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.
Mountain Creek has a reported capacity of 852.2 MW. Source: EIA Form 860.
Mountain Creek is a Natural Gas Steam Turbine facility in Dallas County, TX, participating in the ERCOT market.
Mountain Creek is in Dallas County, TX, inside the ERCOT balancing area.
Mountain Creek is operated by Mountain Creek Power, LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Mountain Creek reports a commercial operation date of February 1956. Current status: operating. Source: EIA Form 860.
Mountain Creek reported 479.5 GWh over the twelve months to 2024-12. Figures are net generation as filed to EIA-923.
Mountain Creek settles at MCSES_UNIT6.
By capacity, Mountain Creek ranks #28 of 257 operating plants of the same technology nationally. It ranks #6 of 32 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.
