# Magic Valley Generating Station

ERCOT Natural Gas Fired Combined Cycle · https://askthegrid.com/assets/facilities/magic-valley-generating-station

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.
NEDIN_CC1 · Electric Reliability Council of Texas (ERCOT).

## Key facts

- Technology: Natural Gas Fired Combined Cycle
- Power capacity: 801 MW
- Operating status: operating

## Grid and market context

- ISO/RTO: ERCOT
- Balancing authority: ERCOT (ERCO)
- Transmission owner: Electric Reliability Council of Texas (ERCOT)

## Source-backed facts

- Owner logo domain: calpine.com — Calpine: America's Premier Competitive Power Company · confidence: high
- Identifiers: [{"value":"55123","system":"EIA plant ID"},{"value":"ERCOT","system":"ISO/RTO"},{"value":"CTG1","system":"FERC generator ID"},{"value":"CTG2","system":"FERC generator ID"},{"value":"STG","system":"FERC generator ID"},{"value":"NEDIN_CC1","system":"ERCOT generation resource"},{"value":"NEDIN_CC1_1","system":"ERCOT market resource"},{"value":"NEDIN_CC1_2","system":"ERCOT market resource"},{"value":"NEDIN_ESR1","system":"ERCOT energy storage resource"},{"value":"45256","system":"Texas PUC docket"}] — MBR | Index · confidence: medium
- Identifiers: [{"value":"55123","system":"EIA plant ID"},{"value":"ERCOT","system":"ISO/RTO"},{"value":"CTG1","system":"FERC generator ID"},{"value":"CTG2","system":"FERC generator ID"},{"value":"STG","system":"FERC generator ID"},{"value":"NEDIN_CC1","system":"ERCOT generation resource"},{"value":"NEDIN_CC1_1","system":"ERCOT market resource"},{"value":"NEDIN_CC1_2","system":"ERCOT market resource"},{"value":"NEDIN_ESR1","system":"ERCOT energy storage resource"},{"value":"45256","system":"Texas PUC docket"}] — Source · confidence: medium
- Identifiers: [{"value":"55123","system":"EIA plant ID"},{"value":"ERCOT","system":"ISO/RTO"},{"value":"CTG1","system":"FERC generator ID"},{"value":"CTG2","system":"FERC generator ID"},{"value":"STG","system":"FERC generator ID"},{"value":"NEDIN_CC1","system":"ERCOT generation resource"},{"value":"NEDIN_CC1_1","system":"ERCOT market resource"},{"value":"NEDIN_CC1_2","system":"ERCOT market resource"},{"value":"NEDIN_ESR1","system":"ERCOT energy storage resource"},{"value":"45256","system":"Texas PUC docket"}] — Combo & Single Model ESR Names · confidence: medium
- Description: Magic Valley Generating Station, EIA plant 55123, is an 801 MW natural-gas-fired combined-cycle power plant in Hidalgo County, Texas. It is an operating facility commissioned in February 2002, with FERC generator IDs CTG1, CTG2, and STG. Calpine owns the project and is the registered ERCOT resource entity for NEDIN_CC1. — MBR | Index · confidence: high
- Description: Magic Valley Generating Station, EIA plant 55123, is an 801 MW natural-gas-fired combined-cycle power plant in Hidalgo County, Texas. It is an operating facility commissioned in February 2002, with FERC generator IDs CTG1, CTG2, and STG. Calpine owns the project and is the registered ERCOT resource entity for NEDIN_CC1. — Power plant profile: Magic Valley Generating Station, US · confidence: high
- Parties: [{"relationship":"Owner","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Operator","name":"Calpine Corp-Magic Valley","official_url":"https://www.calpine.com/"},{"relationship":"ERCOT resource entity","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Gas and steam turbine supplier","name":"Siemens Energy","official_url":"https://www.siemens-energy.com/global/en/home.html"},{"relationship":"Steam boiler supplier","name":"Nooter/Eriksen","official_url":"https://www.ne.com/"},{"relationship":"Fuel supplier","name":"Gilmore Enterprise","official_url":null},{"relationship":"Fuel supplier","name":"Kinder Morgan","official_url":"https://www.kindermorgan.com/"},{"relationship":"Fuel supplier","name":"Spectra Energy","official_url":null},{"relationship":"Power-purchase agreement counterparty","name":"Magic Valley Electric Cooperative","official_url":"https://www.magicvalley.coop/"}] — Power plant profile: Magic Valley Generating Station, US · confidence: medium
- Parties: [{"relationship":"Owner","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Operator","name":"Calpine Corp-Magic Valley","official_url":"https://www.calpine.com/"},{"relationship":"ERCOT resource entity","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Gas and steam turbine supplier","name":"Siemens Energy","official_url":"https://www.siemens-energy.com/global/en/home.html"},{"relationship":"Steam boiler supplier","name":"Nooter/Eriksen","official_url":"https://www.ne.com/"},{"relationship":"Fuel supplier","name":"Gilmore Enterprise","official_url":null},{"relationship":"Fuel supplier","name":"Kinder Morgan","official_url":"https://www.kindermorgan.com/"},{"relationship":"Fuel supplier","name":"Spectra Energy","official_url":null},{"relationship":"Power-purchase agreement counterparty","name":"Magic Valley Electric Cooperative","official_url":"https://www.magicvalley.coop/"}] — Source · confidence: medium
- Parties: [{"relationship":"Owner","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Operator","name":"Calpine Corp-Magic Valley","official_url":"https://www.calpine.com/"},{"relationship":"ERCOT resource entity","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Gas and steam turbine supplier","name":"Siemens Energy","official_url":"https://www.siemens-energy.com/global/en/home.html"},{"relationship":"Steam boiler supplier","name":"Nooter/Eriksen","official_url":"https://www.ne.com/"},{"relationship":"Fuel supplier","name":"Gilmore Enterprise","official_url":null},{"relationship":"Fuel supplier","name":"Kinder Morgan","official_url":"https://www.kindermorgan.com/"},{"relationship":"Fuel supplier","name":"Spectra Energy","official_url":null},{"relationship":"Power-purchase agreement counterparty","name":"Magic Valley Electric Cooperative","official_url":"https://www.magicvalley.coop/"}] — Aeroderivative, Industrial and Heavy-Duty Gas Turbines · confidence: medium
- Parties: [{"relationship":"Owner","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Operator","name":"Calpine Corp-Magic Valley","official_url":"https://www.calpine.com/"},{"relationship":"ERCOT resource entity","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Gas and steam turbine supplier","name":"Siemens Energy","official_url":"https://www.siemens-energy.com/global/en/home.html"},{"relationship":"Steam boiler supplier","name":"Nooter/Eriksen","official_url":"https://www.ne.com/"},{"relationship":"Fuel supplier","name":"Gilmore Enterprise","official_url":null},{"relationship":"Fuel supplier","name":"Kinder Morgan","official_url":"https://www.kindermorgan.com/"},{"relationship":"Fuel supplier","name":"Spectra Energy","official_url":null},{"relationship":"Power-purchase agreement counterparty","name":"Magic Valley Electric Cooperative","official_url":"https://www.magicvalley.coop/"}] — Nooter/Eriksen – Sustainable Energy Management · confidence: medium
- Parties: [{"relationship":"Owner","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Operator","name":"Calpine Corp-Magic Valley","official_url":"https://www.calpine.com/"},{"relationship":"ERCOT resource entity","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Gas and steam turbine supplier","name":"Siemens Energy","official_url":"https://www.siemens-energy.com/global/en/home.html"},{"relationship":"Steam boiler supplier","name":"Nooter/Eriksen","official_url":"https://www.ne.com/"},{"relationship":"Fuel supplier","name":"Gilmore Enterprise","official_url":null},{"relationship":"Fuel supplier","name":"Kinder Morgan","official_url":"https://www.kindermorgan.com/"},{"relationship":"Fuel supplier","name":"Spectra Energy","official_url":null},{"relationship":"Power-purchase agreement counterparty","name":"Magic Valley Electric Cooperative","official_url":"https://www.magicvalley.coop/"}] — Kinder Morgan: Energy Infrastructure & Solutions · confidence: medium
- Parties: [{"relationship":"Owner","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Operator","name":"Calpine Corp-Magic Valley","official_url":"https://www.calpine.com/"},{"relationship":"ERCOT resource entity","name":"Calpine Corporation","official_url":"https://www.calpine.com/"},{"relationship":"Gas and steam turbine supplier","name":"Siemens Energy","official_url":"https://www.siemens-energy.com/global/en/home.html"},{"relationship":"Steam boiler supplier","name":"Nooter/Eriksen","official_url":"https://www.ne.com/"},{"relationship":"Fuel supplier","name":"Gilmore Enterprise","official_url":null},{"relationship":"Fuel supplier","name":"Kinder Morgan","official_url":"https://www.kindermorgan.com/"},{"relationship":"Fuel supplier","name":"Spectra Energy","official_url":null},{"relationship":"Power-purchase agreement counterparty","name":"Magic Valley Electric Cooperative","official_url":"https://www.magicvalley.coop/"}] — Magic Valley Electric Cooperative · confidence: medium
- Canonical name: Magic Valley Generating Station — MBR | Index · confidence: high
- Identifiers.0: {"value":"55123","system":"EIA plant ID"} — MBR | Index · confidence: high
- Identifiers.1: {"value":"ERCOT","system":"ISO/RTO"} — Electric Reliability Council of Texas · confidence: medium
- Identifiers.2: {"value":"CTG1","system":"FERC generator ID"} — MBR | Index · confidence: high
- Identifiers.3: {"value":"CTG2","system":"FERC generator ID"} — MBR | Index · confidence: high
- Identifiers.4: {"value":"STG","system":"FERC generator ID"} — MBR | Index · confidence: high
- Identifiers.5: {"value":"NEDIN_CC1","system":"ERCOT generation resource"} — Source · confidence: high
- Identifiers.5: {"value":"NEDIN_CC1","system":"ERCOT generation resource"} — Source · confidence: high
- Identifiers.6: {"value":"NEDIN_CC1_1","system":"ERCOT market resource"} — Source · confidence: medium
- Identifiers.7: {"value":"NEDIN_CC1_2","system":"ERCOT market resource"} — Source · confidence: medium
- Identifiers.8: {"value":"NEDIN_ESR1","system":"ERCOT energy storage resource"} — Combo & Single Model ESR Names · confidence: high
- Identifiers.9: {"value":"45256","system":"Texas PUC docket"} — Source · confidence: high
- Parties.0: {"relationship":"Owner","name":"Calpine Corporation","official_url":"https://www.calpine.com/"} — Calpine: America's Premier Competitive Power Company · confidence: high
- Parties.2: {"relationship":"ERCOT resource entity","name":"Calpine Corporation","official_url":"https://www.calpine.com/"} — Source · confidence: high
- Parties.3: {"relationship":"Gas and steam turbine supplier","name":"Siemens Energy","official_url":"https://www.siemens-energy.com/global/en/home.html"} — Power plant profile: Magic Valley Generating Station, US · confidence: high
- Parties.3: {"relationship":"Gas and steam turbine supplier","name":"Siemens Energy","official_url":"https://www.siemens-energy.com/global/en/home.html"} — Aeroderivative, Industrial and Heavy-Duty Gas Turbines · confidence: high
- Parties.4: {"relationship":"Steam boiler supplier","name":"Nooter/Eriksen","official_url":"https://www.ne.com/"} — Power plant profile: Magic Valley Generating Station, US · confidence: medium
- Parties.4: {"relationship":"Steam boiler supplier","name":"Nooter/Eriksen","official_url":"https://www.ne.com/"} — Nooter/Eriksen – Sustainable Energy Management · confidence: medium
- Parties.4: {"relationship":"Steam boiler supplier","name":"Nooter/Eriksen","official_url":"https://www.ne.com/"} — Nooter/Eriksen is a new member of ESWET! · confidence: medium
- Parties.5: {"relationship":"Fuel supplier","name":"Gilmore Enterprise","official_url":null} — Power plant profile: Magic Valley Generating Station, US · confidence: medium
- Parties.6: {"relationship":"Fuel supplier","name":"Kinder Morgan","official_url":"https://www.kindermorgan.com/"} — Power plant profile: Magic Valley Generating Station, US · confidence: high
- Parties.6: {"relationship":"Fuel supplier","name":"Kinder Morgan","official_url":"https://www.kindermorgan.com/"} — Kinder Morgan: Energy Infrastructure & Solutions · confidence: high
- Parties.7: {"relationship":"Fuel supplier","name":"Spectra Energy","official_url":null} — Power plant profile: Magic Valley Generating Station, US · confidence: medium
- Parties.8: {"relationship":"Power-purchase agreement counterparty","name":"Magic Valley Electric Cooperative","official_url":"https://www.magicvalley.coop/"} — Power plant profile: Magic Valley Generating Station, US · confidence: medium
- Parties.8: {"relationship":"Power-purchase agreement counterparty","name":"Magic Valley Electric Cooperative","official_url":"https://www.magicvalley.coop/"} — Magic Valley Electric Cooperative · confidence: medium
- Unit configuration: Three natural-gas-fired combined-cycle units: two 267 MW gas turbines (CTG1 and CTG2) and one 267 MW steam turbine (STG). — Source · confidence: medium
- Product url: https://www.siemens-energy.com/global/en/home/products-services/product/combined-cycle-power-plants.html — Combined Cycle Power Plants (CCPP) · confidence: medium
- Product url: https://www.siemens-energy.com/global/en/home/products-services/product/combined-cycle-power-plants.html — SGT5-4000F heavy duty gas turbine for commercial operation · confidence: medium
- Product family: Combined Cycle Power Plants (CCPP) — Combined Cycle Power Plants (CCPP) · confidence: medium
- Equipment models.1: {"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product-offerings/steam-turbines.html","count":1,"unit_mw":267,"name":"Siemens Energy steam turbine — exact model not disclosed"} — Source · confidence: medium
- Significance: Magic Valley Generating Station is an 801 MW natural-gas-fired combined-cycle facility in Hidalgo County that operates in ERCOT as the NEDIN_CC1 resource. — Source · confidence: medium
- Description: Magic Valley Generating Station is an 801 MW natural-gas-fired combined-cycle plant in Edinburg, Hidalgo County, Texas, with three generators. Calpine Corp-Magic Valley operates the facility, and Calpine's February 2026 portfolio table lists it as 100% owned; Constellation became the parent of Calpine after completing its acquisition in January 2026. Construction began in August 2001 and commercial operation began in February 2002. The station's ownership history reflects corporate portfolio transactions rather than separately disclosed plant-level sales: Energy Capital Partners acquired Calpine in a take-private transaction that closed in March 2018, and Constellation acquired Calpine from ECP in January 2026. — Source · confidence: medium
- Description: Magic Valley Generating Station is an 801 MW natural-gas-fired combined-cycle plant in Edinburg, Hidalgo County, Texas, with three generators. Calpine Corp-Magic Valley operates the facility, and Calpine's February 2026 portfolio table lists it as 100% owned; Constellation became the parent of Calpine after completing its acquisition in January 2026. Construction began in August 2001 and commercial operation began in February 2002. The station's ownership history reflects corporate portfolio transactions rather than separately disclosed plant-level sales: Energy Capital Partners acquired Calpine in a take-private transaction that closed in March 2018, and Constellation acquired Calpine from ECP in January 2026. — Source · confidence: medium
- Description: Magic Valley Generating Station is an 801 MW natural-gas-fired combined-cycle plant in Edinburg, Hidalgo County, Texas, with three generators. Calpine Corp-Magic Valley operates the facility, and Calpine's February 2026 portfolio table lists it as 100% owned; Constellation became the parent of Calpine after completing its acquisition in January 2026. Construction began in August 2001 and commercial operation began in February 2002. The station's ownership history reflects corporate portfolio transactions rather than separately disclosed plant-level sales: Energy Capital Partners acquired Calpine in a take-private transaction that closed in March 2018, and Constellation acquired Calpine from ECP in January 2026. — Constellation Completes Calpine Transaction, Powering America's Clean Energy Future · confidence: medium
- Description: Magic Valley Generating Station is an 801 MW natural-gas-fired combined-cycle plant in Edinburg, Hidalgo County, Texas, with three generators. Calpine Corp-Magic Valley operates the facility, and Calpine's February 2026 portfolio table lists it as 100% owned; Constellation became the parent of Calpine after completing its acquisition in January 2026. Construction began in August 2001 and commercial operation began in February 2002. The station's ownership history reflects corporate portfolio transactions rather than separately disclosed plant-level sales: Energy Capital Partners acquired Calpine in a take-private transaction that closed in March 2018, and Constellation acquired Calpine from ECP in January 2026. — Table of Operating Power Plants and Projects Under Construction as of: Friday, February 6, 2026 · confidence: medium
- Quality notes: ["The disclosed $17 billion ECP take-private and the approximately $16.4 billion/$26.6 billion Constellation transaction are corporate or portfolio transaction values, not an allocated purchase price for Magic Valley Generating Station.","The 801 MW figure is the plant's reported total capacity; Calpine's February 2026 operating-plant table presents separate capacity columns of 682 MW and 712 MW, so those figures should not be conflated with total nameplate capacity.","No named plant-specific lender or project-finance facility was identified. No separate expansion, repowering, or retirement milestone was identified; the facility remained listed as an operating plant in February 2026."] — Table of Operating Power Plants and Projects Under Construction as of: Friday, February 6, 2026 · confidence: medium
- Financing summary: No plant-level project financing, lender, or construction-finance amount was disclosed in the reviewed project records. Separately, ECP announced a $17 billion take-private of Calpine in August 2017, which closed in March 2018. Constellation's January 2025 agreement to acquire Calpine was valued at approximately $16.4 billion in equity consideration—50 million Constellation shares and $4.5 billion in cash—plus approximately $12.7 billion of assumed Calpine net debt, for a stated net purchase price of $26.6 billion; the acquisition closed on January 7, 2026. These are corporate portfolio transaction figures, not Magic Valley-specific project financing or an allocated plant sale price. — Constellation to Acquire Calpine; Creates America’s Leading Producer of Clean and Reliable Energy to Meet Growing Demand for Customers and Communities · confidence: medium
- Financing summary: No plant-level project financing, lender, or construction-finance amount was disclosed in the reviewed project records. Separately, ECP announced a $17 billion take-private of Calpine in August 2017, which closed in March 2018. Constellation's January 2025 agreement to acquire Calpine was valued at approximately $16.4 billion in equity consideration—50 million Constellation shares and $4.5 billion in cash—plus approximately $12.7 billion of assumed Calpine net debt, for a stated net purchase price of $26.6 billion; the acquisition closed on January 7, 2026. These are corporate portfolio transaction figures, not Magic Valley-specific project financing or an allocated plant sale price. — Constellation Completes Calpine Transaction, Powering America's Clean Energy Future · confidence: medium
- Timeline: [{"event":"Construction start","date":"2001-08","detail":"Calpine's SEC filing states that construction of Magic Valley Generating Station began in August 2001."},{"event":"Commercial operation","date":"2002-02","detail":"The project was commissioned and began commercial operation in February 2002."},{"event":"ECP take-private announced","date":"2017-08","detail":"Energy Capital Partners announced the $17 billion take-private of Calpine Corporation."},{"event":"ECP take-private closed","date":"2018-03","detail":"The ECP-led acquisition of Calpine closed in March 2018, placing Calpine's generation portfolio, including Magic Valley, under ECP ownership."},{"event":"Constellation-Calpine acquisition announced","date":"2025-01-10","detail":"Constellation announced a definitive agreement to acquire Calpine from its owners led by Energy Capital Partners."},{"event":"Constellation acquisition closed","date":"2026-01-07","detail":"Constellation completed its acquisition of Calpine Corporation from Energy Capital Partners; Calpine's operating portfolio continued to include Magic Valley Generating Station."},{"event":"Operating status","date":"2026-02-06","detail":"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."}] — Source · confidence: medium
- Timeline: [{"event":"Construction start","date":"2001-08","detail":"Calpine's SEC filing states that construction of Magic Valley Generating Station began in August 2001."},{"event":"Commercial operation","date":"2002-02","detail":"The project was commissioned and began commercial operation in February 2002."},{"event":"ECP take-private announced","date":"2017-08","detail":"Energy Capital Partners announced the $17 billion take-private of Calpine Corporation."},{"event":"ECP take-private closed","date":"2018-03","detail":"The ECP-led acquisition of Calpine closed in March 2018, placing Calpine's generation portfolio, including Magic Valley, under ECP ownership."},{"event":"Constellation-Calpine acquisition announced","date":"2025-01-10","detail":"Constellation announced a definitive agreement to acquire Calpine from its owners led by Energy Capital Partners."},{"event":"Constellation acquisition closed","date":"2026-01-07","detail":"Constellation completed its acquisition of Calpine Corporation from Energy Capital Partners; Calpine's operating portfolio continued to include Magic Valley Generating Station."},{"event":"Operating status","date":"2026-02-06","detail":"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."}] — Source · confidence: medium
- Timeline: [{"event":"Construction start","date":"2001-08","detail":"Calpine's SEC filing states that construction of Magic Valley Generating Station began in August 2001."},{"event":"Commercial operation","date":"2002-02","detail":"The project was commissioned and began commercial operation in February 2002."},{"event":"ECP take-private announced","date":"2017-08","detail":"Energy Capital Partners announced the $17 billion take-private of Calpine Corporation."},{"event":"ECP take-private closed","date":"2018-03","detail":"The ECP-led acquisition of Calpine closed in March 2018, placing Calpine's generation portfolio, including Magic Valley, under ECP ownership."},{"event":"Constellation-Calpine acquisition announced","date":"2025-01-10","detail":"Constellation announced a definitive agreement to acquire Calpine from its owners led by Energy Capital Partners."},{"event":"Constellation acquisition closed","date":"2026-01-07","detail":"Constellation completed its acquisition of Calpine Corporation from Energy Capital Partners; Calpine's operating portfolio continued to include Magic Valley Generating Station."},{"event":"Operating status","date":"2026-02-06","detail":"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."}] — Constellation to Acquire Calpine; Creates America’s Leading Producer of Clean and Reliable Energy to Meet Growing Demand for Customers and Communities · confidence: medium
- Timeline: [{"event":"Construction start","date":"2001-08","detail":"Calpine's SEC filing states that construction of Magic Valley Generating Station began in August 2001."},{"event":"Commercial operation","date":"2002-02","detail":"The project was commissioned and began commercial operation in February 2002."},{"event":"ECP take-private announced","date":"2017-08","detail":"Energy Capital Partners announced the $17 billion take-private of Calpine Corporation."},{"event":"ECP take-private closed","date":"2018-03","detail":"The ECP-led acquisition of Calpine closed in March 2018, placing Calpine's generation portfolio, including Magic Valley, under ECP ownership."},{"event":"Constellation-Calpine acquisition announced","date":"2025-01-10","detail":"Constellation announced a definitive agreement to acquire Calpine from its owners led by Energy Capital Partners."},{"event":"Constellation acquisition closed","date":"2026-01-07","detail":"Constellation completed its acquisition of Calpine Corporation from Energy Capital Partners; Calpine's operating portfolio continued to include Magic Valley Generating Station."},{"event":"Operating status","date":"2026-02-06","detail":"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."}] — Constellation Completes Calpine Transaction, Powering America's Clean Energy Future · confidence: medium
- Timeline: [{"event":"Construction start","date":"2001-08","detail":"Calpine's SEC filing states that construction of Magic Valley Generating Station began in August 2001."},{"event":"Commercial operation","date":"2002-02","detail":"The project was commissioned and began commercial operation in February 2002."},{"event":"ECP take-private announced","date":"2017-08","detail":"Energy Capital Partners announced the $17 billion take-private of Calpine Corporation."},{"event":"ECP take-private closed","date":"2018-03","detail":"The ECP-led acquisition of Calpine closed in March 2018, placing Calpine's generation portfolio, including Magic Valley, under ECP ownership."},{"event":"Constellation-Calpine acquisition announced","date":"2025-01-10","detail":"Constellation announced a definitive agreement to acquire Calpine from its owners led by Energy Capital Partners."},{"event":"Constellation acquisition closed","date":"2026-01-07","detail":"Constellation completed its acquisition of Calpine Corporation from Energy Capital Partners; Calpine's operating portfolio continued to include Magic Valley Generating Station."},{"event":"Operating status","date":"2026-02-06","detail":"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."}] — Table of Operating Power Plants and Projects Under Construction as of: Friday, February 6, 2026 · confidence: medium
- Commercial parties: [{"relationship":"Owner","name":"Calpine Corporation","detail":"Calpine's February 2026 operating-plant table lists Magic Valley Generating Station at 100% ownership. Following the January 2026 transaction, Calpine is part of Constellation's acquired portfolio.","official_url":"https://www.calpine.com/"},{"relationship":"Operator","name":"Calpine Corp-Magic Valley","detail":"Registered plant operator for EIA plant 55123 and the operating entity associated with the facility.","official_url":"https://www.calpine.com/"},{"relationship":"Parent and portfolio acquirer","name":"Constellation Energy Corporation","detail":"Completed the acquisition of Calpine Corporation from Energy Capital Partners on January 7, 2026; the transaction was a corporate acquisition that included Calpine's generation portfolio.","official_url":"https://www.constellationenergy.com/"},{"relationship":"Predecessor portfolio owner and seller","name":"Energy Capital Partners","detail":"ECP led the 2018 take-private of Calpine and sold Calpine Corporation to Constellation in the transaction completed in January 2026. No separate Magic Valley plant-level sale consideration was disclosed.","official_url":"https://www.ecpgp.com/"},{"relationship":"Gas and steam turbine supplier","name":"Siemens Energy","detail":"Supplied two gas turbines, each reported at 267 MW nameplate capacity, and one 267 MW steam turbine.","official_url":"https://www.siemens-energy.com/global/en/home.html"},{"relationship":"Steam boiler supplier","name":"Nooter/Eriksen","detail":"Supplied the project's steam boiler equipment.","official_url":"https://www.ne.com/"},{"relationship":"Fuel supplier","name":"Gilmore Enterprise","detail":"Identified as one of the project's natural-gas suppliers.","official_url":null},{"relationship":"Fuel supplier","name":"Kinder Morgan","detail":"Identified as one of the project's natural-gas suppliers.","official_url":"https://www.kindermorgan.com/"},{"relationship":"Fuel supplier","name":"Spectra Energy","detail":"Identified as one of the project's natural-gas suppliers.","official_url":null},{"relationship":"Power-purchase agreement counterparty","name":"Magic Valley Electric Cooperative","detail":"The project's power was reported as sold to Magic Valley Electric under a 20-year power-purchase agreement.","official_url":"https://www.magicvalley.coop/"},{"relationship":"ERCOT resource and grid market","name":"Electric Reliability Council of Texas","detail":"The facility is identified in ERCOT records as the NEDIN_CC1 natural-gas resource in Hidalgo County.","official_url":"https://www.ercot.com/"}] — Table of Operating Power Plants and Projects Under Construction as of: Friday, February 6, 2026 · confidence: medium

## Timeline

- 2017-08 — ECP take-private announced
  Energy Capital Partners announced the $17 billion take-private of Calpine Corporation.
  Source: Calpine | Energy Capital Partners I ECP (https://www.ecpgp.com/equity/portfolio/calpine)
- 2025-01-10 — Constellation-Calpine acquisition announced
  Constellation announced a definitive agreement to acquire Calpine from its owners led by Energy Capital Partners.
  Source: Constellation to Acquire Calpine; Creates America’s Leading Producer of Clean and Reliable Energy to Meet Growing Demand for Customers and Communities (https://www.constellationenergy.com/news/2025/constellation-to-acquire-calpine-creates-americas-leading-producer-of-clean-and-reliable-energy-to-meet-growing-demand-for-customers-and-communities.html)
- 2026-02-06 — Operating status
  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.
  Source: Table of Operating Power Plants and Projects Under Construction as of: Friday, February 6, 2026 (https://www.calpine.com/wp-content/uploads/2026/02/CPN-PORT-1_Q12026.pdf)

## Sources

- [Calpine: America's Premier Competitive Power Company](https://www.calpine.com/) — calpine.com · tier other
- [MBR | Index](https://mbrweb.ferc.gov/SearchlkpEIA/Index?page=253) — mbrweb.ferc.gov · tier regulatory
- [45256 Item Number: 4 Addendum StartPage: 0](https://interchange.puc.texas.gov/Documents/45256_4_873533.PDF) — interchange.puc.texas.gov · tier regulatory
- [Table of Operating Power Plants and Projects Under Construction as of: Friday, February 6, 2026](https://www.calpine.com/wp-content/uploads/2026/02/CPN-PORT-1_Q12026.pdf) — calpine.com · tier other
- [Power plant profile: Magic Valley Generating Station, US](https://www.power-technology.com/data-insights/power-plant-profile-magic-valley-generating-station-us/) — power-technology.com · tier other
- [Aeroderivative, Industrial and Heavy-Duty Gas Turbines](https://www.siemens-energy.com/global/en/home/products-services/product-offerings/gas-turbines.html) — siemens-energy.com · tier other
- [Nooter/Eriksen – Sustainable Energy Management](https://cicgroup.com/nooter-eriksen/) — cicgroup.com · tier other
- [Kinder Morgan: Energy Infrastructure & Solutions](https://www.kindermorgan.com/) — kindermorgan.com · tier other
- [Magic Valley Electric Cooperative](https://www.magicvalley.coop/) — magicvalley.coop · tier other
- [Electric Reliability Council of Texas](https://www.ercot.com/) — ercot.com · tier regulatory
- [Source](https://www.ercot.com/files/docs/2021/02/15/Resource_list_021421_2100.pdf) — ercot.com · tier regulatory
- [Nooter/Eriksen is a new member of ESWET!](https://eswet.eu/nooter-eriksen-is-a-new-member-of-eswet/) — eswet.eu · tier other
- [Source](https://power-technology.com/data-insights/power-plant-profile-magic-valley-generating-station-us) — power-technology.com · tier other
- [Source](https://www.tceq.texas.gov/assets/public/permitting/air/publicnotice/36955sob.pdf) — tceq.texas.gov · tier regulatory
- [Source](https://ercot.com/files/docs/2025/02/14/Single-Model-ESR-Names_01Oct2025-as-of-10-3-25-1545.xlsx) — ercot.com · tier regulatory
- [Combined Cycle Power Plants (CCPP)](https://www.siemens-energy.com/global/en/home/products-services/product/combined-cycle-power-plants.html) — siemens-energy.com · tier other
- [SGT5-4000F heavy duty gas turbine for commercial operation](https://www.siemens-energy.com/global/en/home/products-services/product/sgt5-4000f.html) — siemens-energy.com · tier other
- [Heat Recovery Steam Generators - HRSGs - Nooter Eriksen](https://cicgroup.com/nooter-eriksen/heat-recovery-steam-generators-hrsgs/) — cicgroup.com · tier other
- [Source](https://www.ercot.com/files/docs/2021/02/15/DOE_202c__final_.pdf) — ercot.com · tier regulatory
- [Source](https://gem.wiki/Magic_Valley_generating_station) — gem.wiki · tier other
- [Source](https://sec.gov/Archives/edgar/data/916457/000089161802001569/f80168e10-k.htm) — sec.gov · tier regulatory
- [Constellation Completes Calpine Transaction, Powering America's Clean Energy Future](https://www.constellationenergy.com/news/2026/01/constellation-completes-calpine-transaction-powering-americas-clean-energy-future.html) — constellationenergy.com · tier other
- [Constellation to Acquire Calpine; Creates America’s Leading Producer of Clean and Reliable Energy to Meet Growing Demand for Customers and Communities](https://www.constellationenergy.com/news/2025/constellation-to-acquire-calpine-creates-americas-leading-producer-of-clean-and-reliable-energy-to-meet-growing-demand-for-customers-and-communities.html) — constellationenergy.com · tier other
- [Calpine | Energy Capital Partners I ECP](https://www.ecpgp.com/equity/portfolio/calpine) — ecpgp.com · tier other
- [Source](https://constellationenergy.com/news/2026/01/constellation-completes-calpine-transaction-powering-americas-clean-energy-future.html) — constellationenergy.com · tier other
- [Source](https://calpine.com/wp-content/uploads/2026/02/CPN-PORT-1_Q12026.pdf) — calpine.com · tier other
- [September_2020_ERCOT_Oper...](https://www.ercot.com/files/docs/2020/10/22/September_2020_ERCOT_Operations_Report_Public.docx) — ercot.com · tier regulatory
- [Powering Texans Facilities One Pager V5](https://poweringtexans.com/wp-content/uploads/2025/02/PT_FacilitiesOnePager_Jan25_FINAL.pdf) — poweringtexans.com · tier other

## Data quality

- The disclosed $17 billion ECP take-private and the approximately $16.4 billion/$26.6 billion Constellation transaction are corporate or portfolio transaction values, not an allocated purchase price for Magic Valley Generating Station. The 801 MW figure is the plant's reported total capacity; Calpine's February 2026 operating-plant table presents separate capacity columns of 682 MW and 712 MW, so those figures should not be conflated with total nameplate capacity. No named plant-specific lender or project-finance facility was identified. No separate expansion, repowering, or retirement milestone was identified; the facility remained listed as an operating plant in February 2026.

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Canonical page: https://askthegrid.com/assets/facilities/magic-valley-generating-station

Source: Ask the Grid — https://askthegrid.com/