Magic Valley Generating Station
Calpine CorporationHidalgo County
Magic Valley Generating Station is a natural gas-fired power facility with 801 MW of EIA-reported nameplate capacity in Hidalgo County, Texas, registered as EIA Plant ID 55123. Calpine Corporation is the public owner or developer; Calpine Corp-Magic Valley is the registered plant entity or operator.
Mapped infrastructure geometry associated with this asset.
Natural Gas Fired Combined Cycle
Magic Valley Generating Station is currently operating; a closure or retirement is listed for February 6, 2026.
ERCOT
EIA plant 55123 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combined Cycle | Operating | 267 | Unknown |
| CTG2 | Natural Gas Fired Combined Cycle | Operating | 267 | Unknown |
| STG | Natural Gas Fired Combined Cycle | Operating | 267 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| CTG1 | 267 MW 215 MW summer | Natural Gas Fired Combined Cycle CT | Feb 2002 | Operating |
| CTG2 | 267 MW 215 MW summer | Natural Gas Fired Combined Cycle CT | Feb 2002 | Operating |
| STG | 267 MW 237 MW summer | Natural Gas Fired Combined Cycle CA | Feb 2002 | Operating |
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-860 lists generator CTG1, generator CTG2, generator STG with this operating date.
ERCOT · Hidalgo County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
2 ERCOT market resources · Combined-cycle gas
Capacity factor is average output vs. this plant's observed peak.
Observed ERCOT settlement prices at NEDIN_CC1 over 365 days (2025-11-02 to 2026-11-01). This plant is also crosswalked to NED_NEDIN_G1, NED_NEDIN_G2, NED_NEDIN_G3; 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.
Energy Capital Partners announced the $17 billion take-private of Calpine Corporation.
Constellation announced a definitive agreement to acquire Calpine from its owners led by Energy Capital Partners.
Calpine's operating-plant table dated February 6, 2026 listed Magic Valley Generating Station as a 100%-owned combined-cycle facility in Texas. No separate expansion, repowering, or retirement milestone was identified.
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.
Magic Valley Generating Station reports 801 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Magic Valley Generating Station is a Natural Gas Fired Combined Cycle facility in Hidalgo County, TX, participating in the ERCOT market.
Magic Valley Generating Station is in Hidalgo County, TX, inside the ERCOT balancing area.
Magic Valley Generating Station is operated by Calpine Corp-Magic Valley according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Magic Valley Generating Station reported 1,711.1 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
Magic Valley Generating Station on the Electric Reliability Council of Texas (ERCOT) system.
By capacity, Magic Valley Generating Station ranks #145 of 540 operating plants of the same technology nationally. It ranks #25 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.