# Coleto Creek

ERCOT Conventional Steam Coal · https://askthegrid.com/assets/facilities/coleto-creek

Coleto Creek is a coal-fired power facility with 622.4 MW of EIA-reported nameplate capacity in Goliad County, Texas, registered as EIA Plant ID 6178. Coleto Creek is currently operating; coal operations are scheduled to cease by 2027, with repower the retiring coal facility on-site as a natural-gas-fueled dispatchable plant, with approximately 600–630 MW of capacity. The plant's generating configuration is one conventional steam coal generating unit (Generator 1), using subbituminous coal and an ST steam prime mover.

## Key facts

- Technology: Conventional Steam Coal
- Power capacity: 622.4 MW
- Operating status: operating
- Retirement: 2027

## Grid and market context

- ISO/RTO: ERCOT
- Balancing authority: ERCOT
- Settlement node: COL_COLETOG1
- Substation: Coleto Creek Power Station / Coleto Creek station
- Point of interconnection: Coleto Creek Power Station / Coleto Creek station
- Transmission owner: South Texas Electric Cooperative (STEC)
- Interconnection voltage: 345 kV
- Market resources: COLETO_COLETOG1

## Source-backed facts

- Owner logo domain: vistracorp.com — Vistra Announces Plans to Add Up to 2,000 MW of Gas-Fueled Dispatchable Power in ERCOT - May 30, 2024 · confidence: medium
- Identifiers: [{"value":"6178","system":"EIA plant ID"},{"value":"1","system":"EIA generator ID"},{"value":"COLETO_COLETOG1","system":"ERCOT market resource / unit code"},{"value":"11269","system":"EPA/CAMD facility ID"},{"value":"EPA-R06-OAR-2016-0611","system":"EPA docket"},{"value":"EPA-R06-OAR-2014-0754","system":"EPA docket"}] — Source · confidence: high
- Identifiers: [{"value":"6178","system":"EIA plant ID"},{"value":"1","system":"EIA generator ID"},{"value":"COLETO_COLETOG1","system":"ERCOT market resource / unit code"},{"value":"11269","system":"EPA/CAMD facility ID"},{"value":"EPA-R06-OAR-2016-0611","system":"EPA docket"},{"value":"EPA-R06-OAR-2014-0754","system":"EPA docket"}] — Source · confidence: high
- Identifiers: [{"value":"6178","system":"EIA plant ID"},{"value":"1","system":"EIA generator ID"},{"value":"COLETO_COLETOG1","system":"ERCOT market resource / unit code"},{"value":"11269","system":"EPA/CAMD facility ID"},{"value":"EPA-R06-OAR-2016-0611","system":"EPA docket"},{"value":"EPA-R06-OAR-2014-0754","system":"EPA docket"}] — Document Comments · confidence: high
- Identifiers: [{"value":"6178","system":"EIA plant ID"},{"value":"1","system":"EIA generator ID"},{"value":"COLETO_COLETOG1","system":"ERCOT market resource / unit code"},{"value":"11269","system":"EPA/CAMD facility ID"},{"value":"EPA-R06-OAR-2016-0611","system":"EPA docket"},{"value":"EPA-R06-OAR-2014-0754","system":"EPA docket"}] — Comment Period Ended · confidence: high
- Owner name: Coleto Creek Power, LP; parent/operator Vistra Corp. — Vistra Announces Plans to Add Up to 2,000 MW of Gas-Fueled Dispatchable Power in ERCOT - May 30, 2024 · confidence: medium
- Description: Coleto Creek is a coal-fired conventional steam power plant in Goliad County, Texas, with EIA plant ID 6178 and 622.4 MW of nameplate capacity. EIA/FERC records identify Coleto Creek Power LP as the utility and list generator 1, which entered service in 1980. ERCOT identifies the associated resource as COLETO_COLETOG1. Vistra has announced plans to retire the coal facility by the end of 2027 and repower the site with natural-gas generation. — Source · confidence: high
- Description: Coleto Creek is a coal-fired conventional steam power plant in Goliad County, Texas, with EIA plant ID 6178 and 622.4 MW of nameplate capacity. EIA/FERC records identify Coleto Creek Power LP as the utility and list generator 1, which entered service in 1980. ERCOT identifies the associated resource as COLETO_COLETOG1. Vistra has announced plans to retire the coal facility by the end of 2027 and repower the site with natural-gas generation. — Source · confidence: high
- Parties: [{"relationship":"Owner/operator and registered utility","name":"Coleto Creek Power, LP","official_url":null},{"relationship":"Parent/operator and repowering sponsor","name":"Vistra Corp.","official_url":"https://www.vistracorp.com/"}] — Vistra Announces Plans to Add Up to 2,000 MW of Gas-Fueled Dispatchable Power in ERCOT - May 30, 2024 · confidence: medium
- Canonical name: Coleto Creek — Source · confidence: high
- Identifiers.0: {"value":"6178","system":"EIA plant ID"} — Source · confidence: high
- Identifiers.1: {"value":"1","system":"EIA generator ID"} — Source · confidence: high
- Identifiers.2: {"value":"COLETO_COLETOG1","system":"ERCOT market resource / unit code"} — Source · confidence: high
- Identifiers.4: {"value":"EPA-R06-OAR-2016-0611","system":"EPA docket"} — Document Comments · confidence: high
- Identifiers.5: {"value":"EPA-R06-OAR-2014-0754","system":"EPA docket"} — Comment Period Ended · confidence: high
- Parties.1: {"relationship":"Parent/operator and repowering sponsor","name":"Vistra Corp.","official_url":"https://www.vistracorp.com/"} — Vistra Announces Plans to Add Up to 2,000 MW of Gas-Fueled Dispatchable Power in ERCOT - May 30, 2024 · confidence: medium
- Interconnection: AEP Coleto Creek Substation in the ERCOT grid; associated transmission facilities include the Coleto Creek–Victoria 138-kV line and Coleto Creek–Pawnee Switching Station 345-kV line. — Texas regulators approve AEP upgrades for transmission segments · confidence: medium
- Interconnection: AEP Coleto Creek Substation in the ERCOT grid; associated transmission facilities include the Coleto Creek–Victoria 138-kV line and Coleto Creek–Pawnee Switching Station 345-kV line. — Instructions · confidence: medium
- Unit configuration: One conventional steam coal generating unit (Generator 1), using subbituminous coal and an ST steam prime mover. — Source · confidence: medium
- Product url: https://www.gevernova.com/steam-power — Steam Power | GE Vernova · confidence: medium
- Product url: https://www.gevernova.com/steam-power — In focus: Combustion Engineering | GE Vernova · confidence: medium
- Description: Coleto Creek is a 622.4 MW conventional steam coal plant in Goliad County, Texas, consisting of one generating unit and associated with ERCOT resource COLETO_COLETOG1. The unit entered service in 1980 and is registered to Coleto Creek Power LP. American Electric Power sold the plant in June 2004 to a 50/50 Sempra Energy–Carlyle/Riverstone venture, which sold it to International Power in July 2006. International Power’s parent transitioned to GDF Suez in February 2011, Dynegy acquired the plant in ENGIE’s U.S. portfolio in February 2017, and Vistra obtained it through its April 2018 merger with Dynegy. Vistra has announced coal retirement by 2027 and plans to repower the site with natural-gas generation. — Source · confidence: medium
- Description: Coleto Creek is a 622.4 MW conventional steam coal plant in Goliad County, Texas, consisting of one generating unit and associated with ERCOT resource COLETO_COLETOG1. The unit entered service in 1980 and is registered to Coleto Creek Power LP. American Electric Power sold the plant in June 2004 to a 50/50 Sempra Energy–Carlyle/Riverstone venture, which sold it to International Power in July 2006. International Power’s parent transitioned to GDF Suez in February 2011, Dynegy acquired the plant in ENGIE’s U.S. portfolio in February 2017, and Vistra obtained it through its April 2018 merger with Dynegy. Vistra has announced coal retirement by 2027 and plans to repower the site with natural-gas generation. — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: medium
- Description: Coleto Creek is a 622.4 MW conventional steam coal plant in Goliad County, Texas, consisting of one generating unit and associated with ERCOT resource COLETO_COLETOG1. The unit entered service in 1980 and is registered to Coleto Creek Power LP. American Electric Power sold the plant in June 2004 to a 50/50 Sempra Energy–Carlyle/Riverstone venture, which sold it to International Power in July 2006. International Power’s parent transitioned to GDF Suez in February 2011, Dynegy acquired the plant in ENGIE’s U.S. portfolio in February 2017, and Vistra obtained it through its April 2018 merger with Dynegy. Vistra has announced coal retirement by 2027 and plans to repower the site with natural-gas generation. — Vistra Announces Plans to Add Up to 2,000 MW of Gas-Fueled Dispatchable Power in ERCOT - May 30, 2024 · confidence: medium
- Quality notes: ["Capacity is reported differently across records: EIA/FERC records list 622.4 MW nameplate capacity and 655 MW summer and winter capacity, while transaction-era releases describe the unit as 632 MW or 635 MW.","A 2006 industry report described a planned 2007 baghouse installation and pollution-control work at Coleto Creek; the cited material does not establish a completed net capacity expansion.","The $430 million 2004 figure and $3.3 billion 2017 figure were portfolio transaction values, not standalone Coleto Creek purchase prices. The $1.14 billion 2006 figure was the disclosed cash consideration for the Coleto Creek sale.","Vistra’s repowering announcements describe planned natural-gas conversion and approximately 600–630 MW of restored or additional generation, but do not provide a commercial-operation date for the repowered facility."] — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: high
- Financing summary: The June 2004 acquisition of AEP’s Texas generation portfolio, including Coleto Creek, was financed on a non-recourse basis through a consortium led by Citigroup, JPMorgan Chase, and Goldman Sachs; the $430 million amount covered ten plants rather than Coleto Creek alone. In April 2006, Sempra and Riverstone agreed to sell Coleto Creek to International Power for $1.14 billion in cash; the sellers stated that approximately $350 million would repay debt associated with the investment, and Goldman Sachs advised them. Dynegy’s February 2017 acquisition of ENGIE’s U.S. portfolio was a separate $3.3 billion portfolio transaction and included ECP’s 35% joint-venture interest. — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: medium
- Financing summary: The June 2004 acquisition of AEP’s Texas generation portfolio, including Coleto Creek, was financed on a non-recourse basis through a consortium led by Citigroup, JPMorgan Chase, and Goldman Sachs; the $430 million amount covered ten plants rather than Coleto Creek alone. In April 2006, Sempra and Riverstone agreed to sell Coleto Creek to International Power for $1.14 billion in cash; the sellers stated that approximately $350 million would repay debt associated with the investment, and Goldman Sachs advised them. Dynegy’s February 2017 acquisition of ENGIE’s U.S. portfolio was a separate $3.3 billion portfolio transaction and included ECP’s 35% joint-venture interest. — Sempra Generation and Riverstone Announce Agreement To Sell Coleto Creek Power Plant · confidence: medium
- Timeline: [{"event":"Construction and initial operation","date":"1980","detail":"Coleto Creek was built and began operating as a coal-fired generating unit in 1980; EIA/FERC records identify generator 1 and a June operating month, while one operating record gives May 31, 1980 as the commercial-operation date."},{"event":"AEP divestiture acquisition","date":"2004-06-30","detail":"Sempra Energy Partners and Carlyle/Riverstone completed the acquisition of Coleto Creek from American Electric Power as part of a $430 million purchase of ten Texas power plants. The buyers formed a 50/50 joint venture and retained Coleto Creek in Topaz Power Partners."},{"event":"Acquisition financing","date":"2004-06-30","detail":"The Sempra/Carlyle-Riverstone acquisition was financed on a non-recourse basis through a consortium led by Citigroup, JPMorgan Chase, and Goldman Sachs."},{"event":"Environmental-control upgrade planned","date":"2007","detail":"An industry project report described preliminary engineering and a planned baghouse installation at Coleto Creek, with installation scheduled for the first quarter of 2007 and completion targeted for May 2007. The report does not establish a net generation-capacity increase."},{"event":"Sale agreement announced","date":"2006-04-20","detail":"Sempra Generation and Riverstone announced an agreement to sell the jointly owned 632 MW Coleto Creek plant to International Power for $1.14 billion in cash."},{"event":"Sale to International Power completed","date":"2006-07-09","detail":"Carlyle/Riverstone announced completion of the $1.14 billion cash sale of Coleto Creek to International Power plc."},{"event":"Parent-company transition to GDF Suez","date":"2011-02-03","detail":"GDF Suez and International Power completed the transaction that made GDF Suez the parent of International Power, placing Coleto Creek under the GDF Suez ownership structure."},{"event":"Dynegy acquisition from ENGIE","date":"2017-02-07","detail":"Dynegy completed its $3.3 billion acquisition of ENGIE’s U.S. generation portfolio. The acquired assets included 100% of the 635 MW Coleto Creek plant; Dynegy also acquired ECP’s 35% interest in the relevant joint venture."},{"event":"Transfer to Vistra through merger","date":"2018-04-09","detail":"Vistra Energy completed its merger with Dynegy, bringing Coleto Creek into Vistra’s generation portfolio."},{"event":"Retirement announced","date":"2020-12-03","detail":"Vistra announced plans to retire Coleto Creek no later than 2027 because compliance with updated EPA requirements was expected to be uneconomic."},{"event":"Natural-gas repowering announced","date":"2024-05-30","detail":"Vistra announced that the coal plant would retire in 2027 and that it intended to repower the site with natural gas, enabling up to 600 MW of additional capacity after coal retirement."},{"event":"Repowering plan updated","date":"2025-09-29","detail":"Vistra stated that it would repower the retiring Coleto Creek plant, reuse substantial existing infrastructure, support pipeline expansion, and restore approximately 630 MW of dispatchable generation to the ERCOT grid."}] — Source · confidence: medium
- Timeline: [{"event":"Construction and initial operation","date":"1980","detail":"Coleto Creek was built and began operating as a coal-fired generating unit in 1980; EIA/FERC records identify generator 1 and a June operating month, while one operating record gives May 31, 1980 as the commercial-operation date."},{"event":"AEP divestiture acquisition","date":"2004-06-30","detail":"Sempra Energy Partners and Carlyle/Riverstone completed the acquisition of Coleto Creek from American Electric Power as part of a $430 million purchase of ten Texas power plants. The buyers formed a 50/50 joint venture and retained Coleto Creek in Topaz Power Partners."},{"event":"Acquisition financing","date":"2004-06-30","detail":"The Sempra/Carlyle-Riverstone acquisition was financed on a non-recourse basis through a consortium led by Citigroup, JPMorgan Chase, and Goldman Sachs."},{"event":"Environmental-control upgrade planned","date":"2007","detail":"An industry project report described preliminary engineering and a planned baghouse installation at Coleto Creek, with installation scheduled for the first quarter of 2007 and completion targeted for May 2007. The report does not establish a net generation-capacity increase."},{"event":"Sale agreement announced","date":"2006-04-20","detail":"Sempra Generation and Riverstone announced an agreement to sell the jointly owned 632 MW Coleto Creek plant to International Power for $1.14 billion in cash."},{"event":"Sale to International Power completed","date":"2006-07-09","detail":"Carlyle/Riverstone announced completion of the $1.14 billion cash sale of Coleto Creek to International Power plc."},{"event":"Parent-company transition to GDF Suez","date":"2011-02-03","detail":"GDF Suez and International Power completed the transaction that made GDF Suez the parent of International Power, placing Coleto Creek under the GDF Suez ownership structure."},{"event":"Dynegy acquisition from ENGIE","date":"2017-02-07","detail":"Dynegy completed its $3.3 billion acquisition of ENGIE’s U.S. generation portfolio. The acquired assets included 100% of the 635 MW Coleto Creek plant; Dynegy also acquired ECP’s 35% interest in the relevant joint venture."},{"event":"Transfer to Vistra through merger","date":"2018-04-09","detail":"Vistra Energy completed its merger with Dynegy, bringing Coleto Creek into Vistra’s generation portfolio."},{"event":"Retirement announced","date":"2020-12-03","detail":"Vistra announced plans to retire Coleto Creek no later than 2027 because compliance with updated EPA requirements was expected to be uneconomic."},{"event":"Natural-gas repowering announced","date":"2024-05-30","detail":"Vistra announced that the coal plant would retire in 2027 and that it intended to repower the site with natural gas, enabling up to 600 MW of additional capacity after coal retirement."},{"event":"Repowering plan updated","date":"2025-09-29","detail":"Vistra stated that it would repower the retiring Coleto Creek plant, reuse substantial existing infrastructure, support pipeline expansion, and restore approximately 630 MW of dispatchable generation to the ERCOT grid."}] — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: medium
- Timeline: [{"event":"Construction and initial operation","date":"1980","detail":"Coleto Creek was built and began operating as a coal-fired generating unit in 1980; EIA/FERC records identify generator 1 and a June operating month, while one operating record gives May 31, 1980 as the commercial-operation date."},{"event":"AEP divestiture acquisition","date":"2004-06-30","detail":"Sempra Energy Partners and Carlyle/Riverstone completed the acquisition of Coleto Creek from American Electric Power as part of a $430 million purchase of ten Texas power plants. The buyers formed a 50/50 joint venture and retained Coleto Creek in Topaz Power Partners."},{"event":"Acquisition financing","date":"2004-06-30","detail":"The Sempra/Carlyle-Riverstone acquisition was financed on a non-recourse basis through a consortium led by Citigroup, JPMorgan Chase, and Goldman Sachs."},{"event":"Environmental-control upgrade planned","date":"2007","detail":"An industry project report described preliminary engineering and a planned baghouse installation at Coleto Creek, with installation scheduled for the first quarter of 2007 and completion targeted for May 2007. The report does not establish a net generation-capacity increase."},{"event":"Sale agreement announced","date":"2006-04-20","detail":"Sempra Generation and Riverstone announced an agreement to sell the jointly owned 632 MW Coleto Creek plant to International Power for $1.14 billion in cash."},{"event":"Sale to International Power completed","date":"2006-07-09","detail":"Carlyle/Riverstone announced completion of the $1.14 billion cash sale of Coleto Creek to International Power plc."},{"event":"Parent-company transition to GDF Suez","date":"2011-02-03","detail":"GDF Suez and International Power completed the transaction that made GDF Suez the parent of International Power, placing Coleto Creek under the GDF Suez ownership structure."},{"event":"Dynegy acquisition from ENGIE","date":"2017-02-07","detail":"Dynegy completed its $3.3 billion acquisition of ENGIE’s U.S. generation portfolio. The acquired assets included 100% of the 635 MW Coleto Creek plant; Dynegy also acquired ECP’s 35% interest in the relevant joint venture."},{"event":"Transfer to Vistra through merger","date":"2018-04-09","detail":"Vistra Energy completed its merger with Dynegy, bringing Coleto Creek into Vistra’s generation portfolio."},{"event":"Retirement announced","date":"2020-12-03","detail":"Vistra announced plans to retire Coleto Creek no later than 2027 because compliance with updated EPA requirements was expected to be uneconomic."},{"event":"Natural-gas repowering announced","date":"2024-05-30","detail":"Vistra announced that the coal plant would retire in 2027 and that it intended to repower the site with natural gas, enabling up to 600 MW of additional capacity after coal retirement."},{"event":"Repowering plan updated","date":"2025-09-29","detail":"Vistra stated that it would repower the retiring Coleto Creek plant, reuse substantial existing infrastructure, support pipeline expansion, and restore approximately 630 MW of dispatchable generation to the ERCOT grid."}] — Texas Utilities Involved in Major Power Plant Upgrades · confidence: medium
- Timeline: [{"event":"Construction and initial operation","date":"1980","detail":"Coleto Creek was built and began operating as a coal-fired generating unit in 1980; EIA/FERC records identify generator 1 and a June operating month, while one operating record gives May 31, 1980 as the commercial-operation date."},{"event":"AEP divestiture acquisition","date":"2004-06-30","detail":"Sempra Energy Partners and Carlyle/Riverstone completed the acquisition of Coleto Creek from American Electric Power as part of a $430 million purchase of ten Texas power plants. The buyers formed a 50/50 joint venture and retained Coleto Creek in Topaz Power Partners."},{"event":"Acquisition financing","date":"2004-06-30","detail":"The Sempra/Carlyle-Riverstone acquisition was financed on a non-recourse basis through a consortium led by Citigroup, JPMorgan Chase, and Goldman Sachs."},{"event":"Environmental-control upgrade planned","date":"2007","detail":"An industry project report described preliminary engineering and a planned baghouse installation at Coleto Creek, with installation scheduled for the first quarter of 2007 and completion targeted for May 2007. The report does not establish a net generation-capacity increase."},{"event":"Sale agreement announced","date":"2006-04-20","detail":"Sempra Generation and Riverstone announced an agreement to sell the jointly owned 632 MW Coleto Creek plant to International Power for $1.14 billion in cash."},{"event":"Sale to International Power completed","date":"2006-07-09","detail":"Carlyle/Riverstone announced completion of the $1.14 billion cash sale of Coleto Creek to International Power plc."},{"event":"Parent-company transition to GDF Suez","date":"2011-02-03","detail":"GDF Suez and International Power completed the transaction that made GDF Suez the parent of International Power, placing Coleto Creek under the GDF Suez ownership structure."},{"event":"Dynegy acquisition from ENGIE","date":"2017-02-07","detail":"Dynegy completed its $3.3 billion acquisition of ENGIE’s U.S. generation portfolio. The acquired assets included 100% of the 635 MW Coleto Creek plant; Dynegy also acquired ECP’s 35% interest in the relevant joint venture."},{"event":"Transfer to Vistra through merger","date":"2018-04-09","detail":"Vistra Energy completed its merger with Dynegy, bringing Coleto Creek into Vistra’s generation portfolio."},{"event":"Retirement announced","date":"2020-12-03","detail":"Vistra announced plans to retire Coleto Creek no later than 2027 because compliance with updated EPA requirements was expected to be uneconomic."},{"event":"Natural-gas repowering announced","date":"2024-05-30","detail":"Vistra announced that the coal plant would retire in 2027 and that it intended to repower the site with natural gas, enabling up to 600 MW of additional capacity after coal retirement."},{"event":"Repowering plan updated","date":"2025-09-29","detail":"Vistra stated that it would repower the retiring Coleto Creek plant, reuse substantial existing infrastructure, support pipeline expansion, and restore approximately 630 MW of dispatchable generation to the ERCOT grid."}] — Sempra Generation and Riverstone Announce Agreement To Sell Coleto Creek Power Plant · confidence: medium
- Timeline: [{"event":"Construction and initial operation","date":"1980","detail":"Coleto Creek was built and began operating as a coal-fired generating unit in 1980; EIA/FERC records identify generator 1 and a June operating month, while one operating record gives May 31, 1980 as the commercial-operation date."},{"event":"AEP divestiture acquisition","date":"2004-06-30","detail":"Sempra Energy Partners and Carlyle/Riverstone completed the acquisition of Coleto Creek from American Electric Power as part of a $430 million purchase of ten Texas power plants. The buyers formed a 50/50 joint venture and retained Coleto Creek in Topaz Power Partners."},{"event":"Acquisition financing","date":"2004-06-30","detail":"The Sempra/Carlyle-Riverstone acquisition was financed on a non-recourse basis through a consortium led by Citigroup, JPMorgan Chase, and Goldman Sachs."},{"event":"Environmental-control upgrade planned","date":"2007","detail":"An industry project report described preliminary engineering and a planned baghouse installation at Coleto Creek, with installation scheduled for the first quarter of 2007 and completion targeted for May 2007. The report does not establish a net generation-capacity increase."},{"event":"Sale agreement announced","date":"2006-04-20","detail":"Sempra Generation and Riverstone announced an agreement to sell the jointly owned 632 MW Coleto Creek plant to International Power for $1.14 billion in cash."},{"event":"Sale to International Power completed","date":"2006-07-09","detail":"Carlyle/Riverstone announced completion of the $1.14 billion cash sale of Coleto Creek to International Power plc."},{"event":"Parent-company transition to GDF Suez","date":"2011-02-03","detail":"GDF Suez and International Power completed the transaction that made GDF Suez the parent of International Power, placing Coleto Creek under the GDF Suez ownership structure."},{"event":"Dynegy acquisition from ENGIE","date":"2017-02-07","detail":"Dynegy completed its $3.3 billion acquisition of ENGIE’s U.S. generation portfolio. The acquired assets included 100% of the 635 MW Coleto Creek plant; Dynegy also acquired ECP’s 35% interest in the relevant joint venture."},{"event":"Transfer to Vistra through merger","date":"2018-04-09","detail":"Vistra Energy completed its merger with Dynegy, bringing Coleto Creek into Vistra’s generation portfolio."},{"event":"Retirement announced","date":"2020-12-03","detail":"Vistra announced plans to retire Coleto Creek no later than 2027 because compliance with updated EPA requirements was expected to be uneconomic."},{"event":"Natural-gas repowering announced","date":"2024-05-30","detail":"Vistra announced that the coal plant would retire in 2027 and that it intended to repower the site with natural gas, enabling up to 600 MW of additional capacity after coal retirement."},{"event":"Repowering plan updated","date":"2025-09-29","detail":"Vistra stated that it would repower the retiring Coleto Creek plant, reuse substantial existing infrastructure, support pipeline expansion, and restore approximately 630 MW of dispatchable generation to the ERCOT grid."}] — International Power plc and GDF SUEZ Successfully... · confidence: medium
- Timeline: [{"event":"Construction and initial operation","date":"1980","detail":"Coleto Creek was built and began operating as a coal-fired generating unit in 1980; EIA/FERC records identify generator 1 and a June operating month, while one operating record gives May 31, 1980 as the commercial-operation date."},{"event":"AEP divestiture acquisition","date":"2004-06-30","detail":"Sempra Energy Partners and Carlyle/Riverstone completed the acquisition of Coleto Creek from American Electric Power as part of a $430 million purchase of ten Texas power plants. The buyers formed a 50/50 joint venture and retained Coleto Creek in Topaz Power Partners."},{"event":"Acquisition financing","date":"2004-06-30","detail":"The Sempra/Carlyle-Riverstone acquisition was financed on a non-recourse basis through a consortium led by Citigroup, JPMorgan Chase, and Goldman Sachs."},{"event":"Environmental-control upgrade planned","date":"2007","detail":"An industry project report described preliminary engineering and a planned baghouse installation at Coleto Creek, with installation scheduled for the first quarter of 2007 and completion targeted for May 2007. The report does not establish a net generation-capacity increase."},{"event":"Sale agreement announced","date":"2006-04-20","detail":"Sempra Generation and Riverstone announced an agreement to sell the jointly owned 632 MW Coleto Creek plant to International Power for $1.14 billion in cash."},{"event":"Sale to International Power completed","date":"2006-07-09","detail":"Carlyle/Riverstone announced completion of the $1.14 billion cash sale of Coleto Creek to International Power plc."},{"event":"Parent-company transition to GDF Suez","date":"2011-02-03","detail":"GDF Suez and International Power completed the transaction that made GDF Suez the parent of International Power, placing Coleto Creek under the GDF Suez ownership structure."},{"event":"Dynegy acquisition from ENGIE","date":"2017-02-07","detail":"Dynegy completed its $3.3 billion acquisition of ENGIE’s U.S. generation portfolio. The acquired assets included 100% of the 635 MW Coleto Creek plant; Dynegy also acquired ECP’s 35% interest in the relevant joint venture."},{"event":"Transfer to Vistra through merger","date":"2018-04-09","detail":"Vistra Energy completed its merger with Dynegy, bringing Coleto Creek into Vistra’s generation portfolio."},{"event":"Retirement announced","date":"2020-12-03","detail":"Vistra announced plans to retire Coleto Creek no later than 2027 because compliance with updated EPA requirements was expected to be uneconomic."},{"event":"Natural-gas repowering announced","date":"2024-05-30","detail":"Vistra announced that the coal plant would retire in 2027 and that it intended to repower the site with natural gas, enabling up to 600 MW of additional capacity after coal retirement."},{"event":"Repowering plan updated","date":"2025-09-29","detail":"Vistra stated that it would repower the retiring Coleto Creek plant, reuse substantial existing infrastructure, support pipeline expansion, and restore approximately 630 MW of dispatchable generation to the ERCOT grid."}] — Vistra to Shut down Another Texas Coal Plant · confidence: medium
- Timeline: [{"event":"Construction and initial operation","date":"1980","detail":"Coleto Creek was built and began operating as a coal-fired generating unit in 1980; EIA/FERC records identify generator 1 and a June operating month, while one operating record gives May 31, 1980 as the commercial-operation date."},{"event":"AEP divestiture acquisition","date":"2004-06-30","detail":"Sempra Energy Partners and Carlyle/Riverstone completed the acquisition of Coleto Creek from American Electric Power as part of a $430 million purchase of ten Texas power plants. The buyers formed a 50/50 joint venture and retained Coleto Creek in Topaz Power Partners."},{"event":"Acquisition financing","date":"2004-06-30","detail":"The Sempra/Carlyle-Riverstone acquisition was financed on a non-recourse basis through a consortium led by Citigroup, JPMorgan Chase, and Goldman Sachs."},{"event":"Environmental-control upgrade planned","date":"2007","detail":"An industry project report described preliminary engineering and a planned baghouse installation at Coleto Creek, with installation scheduled for the first quarter of 2007 and completion targeted for May 2007. The report does not establish a net generation-capacity increase."},{"event":"Sale agreement announced","date":"2006-04-20","detail":"Sempra Generation and Riverstone announced an agreement to sell the jointly owned 632 MW Coleto Creek plant to International Power for $1.14 billion in cash."},{"event":"Sale to International Power completed","date":"2006-07-09","detail":"Carlyle/Riverstone announced completion of the $1.14 billion cash sale of Coleto Creek to International Power plc."},{"event":"Parent-company transition to GDF Suez","date":"2011-02-03","detail":"GDF Suez and International Power completed the transaction that made GDF Suez the parent of International Power, placing Coleto Creek under the GDF Suez ownership structure."},{"event":"Dynegy acquisition from ENGIE","date":"2017-02-07","detail":"Dynegy completed its $3.3 billion acquisition of ENGIE’s U.S. generation portfolio. The acquired assets included 100% of the 635 MW Coleto Creek plant; Dynegy also acquired ECP’s 35% interest in the relevant joint venture."},{"event":"Transfer to Vistra through merger","date":"2018-04-09","detail":"Vistra Energy completed its merger with Dynegy, bringing Coleto Creek into Vistra’s generation portfolio."},{"event":"Retirement announced","date":"2020-12-03","detail":"Vistra announced plans to retire Coleto Creek no later than 2027 because compliance with updated EPA requirements was expected to be uneconomic."},{"event":"Natural-gas repowering announced","date":"2024-05-30","detail":"Vistra announced that the coal plant would retire in 2027 and that it intended to repower the site with natural gas, enabling up to 600 MW of additional capacity after coal retirement."},{"event":"Repowering plan updated","date":"2025-09-29","detail":"Vistra stated that it would repower the retiring Coleto Creek plant, reuse substantial existing infrastructure, support pipeline expansion, and restore approximately 630 MW of dispatchable generation to the ERCOT grid."}] — Vistra Announces Plans to Add Up to 2,000 MW of Gas-Fueled Dispatchable Power in ERCOT - May 30, 2024 · confidence: medium
- Timeline: [{"event":"Construction and initial operation","date":"1980","detail":"Coleto Creek was built and began operating as a coal-fired generating unit in 1980; EIA/FERC records identify generator 1 and a June operating month, while one operating record gives May 31, 1980 as the commercial-operation date."},{"event":"AEP divestiture acquisition","date":"2004-06-30","detail":"Sempra Energy Partners and Carlyle/Riverstone completed the acquisition of Coleto Creek from American Electric Power as part of a $430 million purchase of ten Texas power plants. The buyers formed a 50/50 joint venture and retained Coleto Creek in Topaz Power Partners."},{"event":"Acquisition financing","date":"2004-06-30","detail":"The Sempra/Carlyle-Riverstone acquisition was financed on a non-recourse basis through a consortium led by Citigroup, JPMorgan Chase, and Goldman Sachs."},{"event":"Environmental-control upgrade planned","date":"2007","detail":"An industry project report described preliminary engineering and a planned baghouse installation at Coleto Creek, with installation scheduled for the first quarter of 2007 and completion targeted for May 2007. The report does not establish a net generation-capacity increase."},{"event":"Sale agreement announced","date":"2006-04-20","detail":"Sempra Generation and Riverstone announced an agreement to sell the jointly owned 632 MW Coleto Creek plant to International Power for $1.14 billion in cash."},{"event":"Sale to International Power completed","date":"2006-07-09","detail":"Carlyle/Riverstone announced completion of the $1.14 billion cash sale of Coleto Creek to International Power plc."},{"event":"Parent-company transition to GDF Suez","date":"2011-02-03","detail":"GDF Suez and International Power completed the transaction that made GDF Suez the parent of International Power, placing Coleto Creek under the GDF Suez ownership structure."},{"event":"Dynegy acquisition from ENGIE","date":"2017-02-07","detail":"Dynegy completed its $3.3 billion acquisition of ENGIE’s U.S. generation portfolio. The acquired assets included 100% of the 635 MW Coleto Creek plant; Dynegy also acquired ECP’s 35% interest in the relevant joint venture."},{"event":"Transfer to Vistra through merger","date":"2018-04-09","detail":"Vistra Energy completed its merger with Dynegy, bringing Coleto Creek into Vistra’s generation portfolio."},{"event":"Retirement announced","date":"2020-12-03","detail":"Vistra announced plans to retire Coleto Creek no later than 2027 because compliance with updated EPA requirements was expected to be uneconomic."},{"event":"Natural-gas repowering announced","date":"2024-05-30","detail":"Vistra announced that the coal plant would retire in 2027 and that it intended to repower the site with natural gas, enabling up to 600 MW of additional capacity after coal retirement."},{"event":"Repowering plan updated","date":"2025-09-29","detail":"Vistra stated that it would repower the retiring Coleto Creek plant, reuse substantial existing infrastructure, support pipeline expansion, and restore approximately 630 MW of dispatchable generation to the ERCOT grid."}] — Vistra Announces Plans to Build New Gas-Fueled Dispatchable Power Units in the Permian Basin - Sep 29, 2025 · confidence: medium
- Commercial parties: [{"relationship":"Registered utility and plant operator","name":"Coleto Creek Power, LP","detail":"EIA/FERC records identify Coleto Creek Power LP as the utility associated with EIA plant 6178 and generator 1.","official_url":null},{"relationship":"Predecessor owner and seller in 2004","name":"American Electric Power (AEP)","detail":"AEP previously owned Coleto Creek and sold it in the 2004 Texas generation-portfolio transaction.","official_url":"https://www.aep.com/"},{"relationship":"2004 buyer and 50% joint-venture owner","name":"Sempra Energy Partners / Sempra Generation","detail":"Sempra acquired a 50% interest in Coleto Creek with Carlyle/Riverstone and provided asset-management services through its generation businesses.","official_url":"https://www.sempra.com/"},{"relationship":"2004 buyer and 50% joint-venture owner","name":"Carlyle/Riverstone","detail":"Carlyle/Riverstone acquired a 50% interest in Coleto Creek with Sempra as part of the Topaz Power Partners venture.","official_url":"https://www.carlyle.com/"},{"relationship":"2006 buyer","name":"International Power plc","detail":"International Power acquired Coleto Creek from Sempra Generation and Riverstone for $1.14 billion in cash in July 2006.","official_url":null},{"relationship":"Parent owner from 2011 and seller in 2017 portfolio transaction","name":"GDF Suez / ENGIE","detail":"GDF Suez completed its acquisition of International Power in February 2011; the company later operated under the ENGIE name before selling its U.S. generation portfolio to Dynegy.","official_url":"https://www.engie.com/"},{"relationship":"2017 buyer","name":"Dynegy Inc.","detail":"Dynegy acquired Coleto Creek as part of ENGIE’s U.S. generation portfolio for a total portfolio purchase price of $3.3 billion.","official_url":null},{"relationship":"2017 portfolio transaction party","name":"Energy Capital Partners (ECP)","detail":"Dynegy acquired ECP’s 35% interest in the joint venture associated with the ENGIE portfolio and paid ECP a disclosed post-closing discounted floor price of $375 million.","official_url":"https://www.ecpgp.com/"},{"relationship":"Current parent/operator and repowering sponsor","name":"Vistra Corp.","detail":"Vistra obtained Coleto Creek through its April 2018 merger with Dynegy and announced the plant’s planned coal retirement and natural-gas repowering.","official_url":"https://www.vistracorp.com/"},{"relationship":"Acquisition-financing lender","name":"Citigroup","detail":"Citigroup led the consortium financing the 2004 acquisition on a non-recourse basis.","official_url":"https://www.citigroup.com/"},{"relationship":"Acquisition-financing lender","name":"JPMorgan Chase","detail":"JPMorgan Chase led the consortium financing the 2004 acquisition on a non-recourse basis.","official_url":"https://www.jpmorganchase.com/"},{"relationship":"Acquisition-financing lender and 2006 sale adviser","name":"Goldman Sachs","detail":"Goldman Sachs was identified as a lead institution in the 2004 acquisition financing and advised Sempra and Riverstone on the 2006 sale to International Power.","official_url":"https://www.goldmansachs.com/"}] — Source · confidence: medium
- Commercial parties: [{"relationship":"Registered utility and plant operator","name":"Coleto Creek Power, LP","detail":"EIA/FERC records identify Coleto Creek Power LP as the utility associated with EIA plant 6178 and generator 1.","official_url":null},{"relationship":"Predecessor owner and seller in 2004","name":"American Electric Power (AEP)","detail":"AEP previously owned Coleto Creek and sold it in the 2004 Texas generation-portfolio transaction.","official_url":"https://www.aep.com/"},{"relationship":"2004 buyer and 50% joint-venture owner","name":"Sempra Energy Partners / Sempra Generation","detail":"Sempra acquired a 50% interest in Coleto Creek with Carlyle/Riverstone and provided asset-management services through its generation businesses.","official_url":"https://www.sempra.com/"},{"relationship":"2004 buyer and 50% joint-venture owner","name":"Carlyle/Riverstone","detail":"Carlyle/Riverstone acquired a 50% interest in Coleto Creek with Sempra as part of the Topaz Power Partners venture.","official_url":"https://www.carlyle.com/"},{"relationship":"2006 buyer","name":"International Power plc","detail":"International Power acquired Coleto Creek from Sempra Generation and Riverstone for $1.14 billion in cash in July 2006.","official_url":null},{"relationship":"Parent owner from 2011 and seller in 2017 portfolio transaction","name":"GDF Suez / ENGIE","detail":"GDF Suez completed its acquisition of International Power in February 2011; the company later operated under the ENGIE name before selling its U.S. generation portfolio to Dynegy.","official_url":"https://www.engie.com/"},{"relationship":"2017 buyer","name":"Dynegy Inc.","detail":"Dynegy acquired Coleto Creek as part of ENGIE’s U.S. generation portfolio for a total portfolio purchase price of $3.3 billion.","official_url":null},{"relationship":"2017 portfolio transaction party","name":"Energy Capital Partners (ECP)","detail":"Dynegy acquired ECP’s 35% interest in the joint venture associated with the ENGIE portfolio and paid ECP a disclosed post-closing discounted floor price of $375 million.","official_url":"https://www.ecpgp.com/"},{"relationship":"Current parent/operator and repowering sponsor","name":"Vistra Corp.","detail":"Vistra obtained Coleto Creek through its April 2018 merger with Dynegy and announced the plant’s planned coal retirement and natural-gas repowering.","official_url":"https://www.vistracorp.com/"},{"relationship":"Acquisition-financing lender","name":"Citigroup","detail":"Citigroup led the consortium financing the 2004 acquisition on a non-recourse basis.","official_url":"https://www.citigroup.com/"},{"relationship":"Acquisition-financing lender","name":"JPMorgan Chase","detail":"JPMorgan Chase led the consortium financing the 2004 acquisition on a non-recourse basis.","official_url":"https://www.jpmorganchase.com/"},{"relationship":"Acquisition-financing lender and 2006 sale adviser","name":"Goldman Sachs","detail":"Goldman Sachs was identified as a lead institution in the 2004 acquisition financing and advised Sempra and Riverstone on the 2006 sale to International Power.","official_url":"https://www.goldmansachs.com/"}] — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: medium
- Commercial parties: [{"relationship":"Registered utility and plant operator","name":"Coleto Creek Power, LP","detail":"EIA/FERC records identify Coleto Creek Power LP as the utility associated with EIA plant 6178 and generator 1.","official_url":null},{"relationship":"Predecessor owner and seller in 2004","name":"American Electric Power (AEP)","detail":"AEP previously owned Coleto Creek and sold it in the 2004 Texas generation-portfolio transaction.","official_url":"https://www.aep.com/"},{"relationship":"2004 buyer and 50% joint-venture owner","name":"Sempra Energy Partners / Sempra Generation","detail":"Sempra acquired a 50% interest in Coleto Creek with Carlyle/Riverstone and provided asset-management services through its generation businesses.","official_url":"https://www.sempra.com/"},{"relationship":"2004 buyer and 50% joint-venture owner","name":"Carlyle/Riverstone","detail":"Carlyle/Riverstone acquired a 50% interest in Coleto Creek with Sempra as part of the Topaz Power Partners venture.","official_url":"https://www.carlyle.com/"},{"relationship":"2006 buyer","name":"International Power plc","detail":"International Power acquired Coleto Creek from Sempra Generation and Riverstone for $1.14 billion in cash in July 2006.","official_url":null},{"relationship":"Parent owner from 2011 and seller in 2017 portfolio transaction","name":"GDF Suez / ENGIE","detail":"GDF Suez completed its acquisition of International Power in February 2011; the company later operated under the ENGIE name before selling its U.S. generation portfolio to Dynegy.","official_url":"https://www.engie.com/"},{"relationship":"2017 buyer","name":"Dynegy Inc.","detail":"Dynegy acquired Coleto Creek as part of ENGIE’s U.S. generation portfolio for a total portfolio purchase price of $3.3 billion.","official_url":null},{"relationship":"2017 portfolio transaction party","name":"Energy Capital Partners (ECP)","detail":"Dynegy acquired ECP’s 35% interest in the joint venture associated with the ENGIE portfolio and paid ECP a disclosed post-closing discounted floor price of $375 million.","official_url":"https://www.ecpgp.com/"},{"relationship":"Current parent/operator and repowering sponsor","name":"Vistra Corp.","detail":"Vistra obtained Coleto Creek through its April 2018 merger with Dynegy and announced the plant’s planned coal retirement and natural-gas repowering.","official_url":"https://www.vistracorp.com/"},{"relationship":"Acquisition-financing lender","name":"Citigroup","detail":"Citigroup led the consortium financing the 2004 acquisition on a non-recourse basis.","official_url":"https://www.citigroup.com/"},{"relationship":"Acquisition-financing lender","name":"JPMorgan Chase","detail":"JPMorgan Chase led the consortium financing the 2004 acquisition on a non-recourse basis.","official_url":"https://www.jpmorganchase.com/"},{"relationship":"Acquisition-financing lender and 2006 sale adviser","name":"Goldman Sachs","detail":"Goldman Sachs was identified as a lead institution in the 2004 acquisition financing and advised Sempra and Riverstone on the 2006 sale to International Power.","official_url":"https://www.goldmansachs.com/"}] — Sempra Generation and Riverstone Announce Agreement To Sell Coleto Creek Power Plant · confidence: medium
- Commercial parties: [{"relationship":"Registered utility and plant operator","name":"Coleto Creek Power, LP","detail":"EIA/FERC records identify Coleto Creek Power LP as the utility associated with EIA plant 6178 and generator 1.","official_url":null},{"relationship":"Predecessor owner and seller in 2004","name":"American Electric Power (AEP)","detail":"AEP previously owned Coleto Creek and sold it in the 2004 Texas generation-portfolio transaction.","official_url":"https://www.aep.com/"},{"relationship":"2004 buyer and 50% joint-venture owner","name":"Sempra Energy Partners / Sempra Generation","detail":"Sempra acquired a 50% interest in Coleto Creek with Carlyle/Riverstone and provided asset-management services through its generation businesses.","official_url":"https://www.sempra.com/"},{"relationship":"2004 buyer and 50% joint-venture owner","name":"Carlyle/Riverstone","detail":"Carlyle/Riverstone acquired a 50% interest in Coleto Creek with Sempra as part of the Topaz Power Partners venture.","official_url":"https://www.carlyle.com/"},{"relationship":"2006 buyer","name":"International Power plc","detail":"International Power acquired Coleto Creek from Sempra Generation and Riverstone for $1.14 billion in cash in July 2006.","official_url":null},{"relationship":"Parent owner from 2011 and seller in 2017 portfolio transaction","name":"GDF Suez / ENGIE","detail":"GDF Suez completed its acquisition of International Power in February 2011; the company later operated under the ENGIE name before selling its U.S. generation portfolio to Dynegy.","official_url":"https://www.engie.com/"},{"relationship":"2017 buyer","name":"Dynegy Inc.","detail":"Dynegy acquired Coleto Creek as part of ENGIE’s U.S. generation portfolio for a total portfolio purchase price of $3.3 billion.","official_url":null},{"relationship":"2017 portfolio transaction party","name":"Energy Capital Partners (ECP)","detail":"Dynegy acquired ECP’s 35% interest in the joint venture associated with the ENGIE portfolio and paid ECP a disclosed post-closing discounted floor price of $375 million.","official_url":"https://www.ecpgp.com/"},{"relationship":"Current parent/operator and repowering sponsor","name":"Vistra Corp.","detail":"Vistra obtained Coleto Creek through its April 2018 merger with Dynegy and announced the plant’s planned coal retirement and natural-gas repowering.","official_url":"https://www.vistracorp.com/"},{"relationship":"Acquisition-financing lender","name":"Citigroup","detail":"Citigroup led the consortium financing the 2004 acquisition on a non-recourse basis.","official_url":"https://www.citigroup.com/"},{"relationship":"Acquisition-financing lender","name":"JPMorgan Chase","detail":"JPMorgan Chase led the consortium financing the 2004 acquisition on a non-recourse basis.","official_url":"https://www.jpmorganchase.com/"},{"relationship":"Acquisition-financing lender and 2006 sale adviser","name":"Goldman Sachs","detail":"Goldman Sachs was identified as a lead institution in the 2004 acquisition financing and advised Sempra and Riverstone on the 2006 sale to International Power.","official_url":"https://www.goldmansachs.com/"}] — Vistra Announces Plans to Add Up to 2,000 MW of Gas-Fueled Dispatchable Power in ERCOT - May 30, 2024 · confidence: medium
- Commercial parties.0: {"relationship":"Registered utility and plant operator","name":"Coleto Creek Power, LP","detail":"EIA/FERC records identify Coleto Creek Power LP as the utility associated with EIA plant 6178 and generator 1.","official_url":null} — Source · confidence: medium
- Commercial parties.1: {"relationship":"Predecessor owner and seller in 2004","name":"American Electric Power (AEP)","detail":"AEP previously owned Coleto Creek and sold it in the 2004 Texas generation-portfolio transaction.","official_url":"https://www.aep.com/"} — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: high
- Commercial parties.2: {"relationship":"2004 buyer and 50% joint-venture owner","name":"Sempra Energy Partners / Sempra Generation","detail":"Sempra acquired a 50% interest in Coleto Creek with Carlyle/Riverstone and provided asset-management services through its generation businesses.","official_url":"https://www.sempra.com/"} — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: medium
- Commercial parties.3: {"relationship":"2004 buyer and 50% joint-venture owner","name":"Carlyle/Riverstone","detail":"Carlyle/Riverstone acquired a 50% interest in Coleto Creek with Sempra as part of the Topaz Power Partners venture.","official_url":"https://www.carlyle.com/"} — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: medium
- Commercial parties.4: {"relationship":"2006 buyer","name":"International Power plc","detail":"International Power acquired Coleto Creek from Sempra Generation and Riverstone for $1.14 billion in cash in July 2006.","official_url":null} — Sempra Generation and Riverstone Announce Agreement To Sell Coleto Creek Power Plant · confidence: high
- Commercial parties.5: {"relationship":"Parent owner from 2011 and seller in 2017 portfolio transaction","name":"GDF Suez / ENGIE","detail":"GDF Suez completed its acquisition of International Power in February 2011; the company later operated under the ENGIE name before selling its U.S. generation portfolio to Dynegy.","official_url":"https://www.engie.com/"} — International Power plc and GDF SUEZ Successfully... · confidence: medium
- Commercial parties.8: {"relationship":"Current parent/operator and repowering sponsor","name":"Vistra Corp.","detail":"Vistra obtained Coleto Creek through its April 2018 merger with Dynegy and announced the plant’s planned coal retirement and natural-gas repowering.","official_url":"https://www.vistracorp.com/"} — Vistra Announces Plans to Add Up to 2,000 MW of Gas-Fueled Dispatchable Power in ERCOT - May 30, 2024 · confidence: medium
- Commercial parties.9: {"relationship":"Acquisition-financing lender","name":"Citigroup","detail":"Citigroup led the consortium financing the 2004 acquisition on a non-recourse basis.","official_url":"https://www.citigroup.com/"} — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: high
- Commercial parties.10: {"relationship":"Acquisition-financing lender","name":"JPMorgan Chase","detail":"JPMorgan Chase led the consortium financing the 2004 acquisition on a non-recourse basis.","official_url":"https://www.jpmorganchase.com/"} — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: high
- Commercial parties.11: {"relationship":"Acquisition-financing lender and 2006 sale adviser","name":"Goldman Sachs","detail":"Goldman Sachs was identified as a lead institution in the 2004 acquisition financing and advised Sempra and Riverstone on the 2006 sale to International Power.","official_url":"https://www.goldmansachs.com/"} — Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle · confidence: high
- Commercial parties.11: {"relationship":"Acquisition-financing lender and 2006 sale adviser","name":"Goldman Sachs","detail":"Goldman Sachs was identified as a lead institution in the 2004 acquisition financing and advised Sempra and Riverstone on the 2006 sale to International Power.","official_url":"https://www.goldmansachs.com/"} — Sempra Generation and Riverstone Announce Agreement To Sell Coleto Creek Power Plant · confidence: high
- Later sale or transfer: Subsequent ownership changes were: (1) July 2006, Carlyle/Riverstone sold Coleto Creek Power to International Power plc for $1.14 billion; (2) February 3, 2011, GDF Suez acquired Coleto Creek's parent, International Power plc, a corporate-parent-only transfer; (3) February 7, 2017, Dynegy acquired Coleto Creek as part of ENGIE/GDF Suez's U.S. generation portfolio, including 100% of the listed Coleto Creek asset and ECP's 35% joint-venture interest; and (4) in 2018, Vistra acquired Coleto Creek through its merger with Dynegy, another corporate-parent-only transfer. — Riverstone Holdings and The Carlyle Group Announce... · confidence: medium
- Later sale or transfer: Subsequent ownership changes were: (1) July 2006, Carlyle/Riverstone sold Coleto Creek Power to International Power plc for $1.14 billion; (2) February 3, 2011, GDF Suez acquired Coleto Creek's parent, International Power plc, a corporate-parent-only transfer; (3) February 7, 2017, Dynegy acquired Coleto Creek as part of ENGIE/GDF Suez's U.S. generation portfolio, including 100% of the listed Coleto Creek asset and ECP's 35% joint-venture interest; and (4) in 2018, Vistra acquired Coleto Creek through its merger with Dynegy, another corporate-parent-only transfer. — Coleto Creek Power LP's Rating Withdrawn Upon Deb | S&P Global Ratings · confidence: medium
- Later sale or transfer: Subsequent ownership changes were: (1) July 2006, Carlyle/Riverstone sold Coleto Creek Power to International Power plc for $1.14 billion; (2) February 3, 2011, GDF Suez acquired Coleto Creek's parent, International Power plc, a corporate-parent-only transfer; (3) February 7, 2017, Dynegy acquired Coleto Creek as part of ENGIE/GDF Suez's U.S. generation portfolio, including 100% of the listed Coleto Creek asset and ECP's 35% joint-venture interest; and (4) in 2018, Vistra acquired Coleto Creek through its merger with Dynegy, another corporate-parent-only transfer. — Vistra to Shut down Another Texas Coal Plant · confidence: medium
- Status date: 2026-07 — Monthly Outlook for Resource Adequacy (MORA) · confidence: medium
- Replacement or repowering: Repower the retiring coal facility on-site as a natural-gas-fueled dispatchable plant, with approximately 600–630 MW of capacity. — Form 10-K for Vistra Corp filed 02/27/2026 · confidence: medium
- Replacement or repowering: Repower the retiring coal facility on-site as a natural-gas-fueled dispatchable plant, with approximately 600–630 MW of capacity. — Vistra Announces Plans to Build New Gas-Fueled Dispatchable Power Units in the Permian Basin - Sep 29, 2025 · confidence: medium
- Resource type: Thermal — Stand-Alone Generation Resources as of 09.01.25.pdf · confidence: high

## Timeline

- 2006-04-20 — Sale agreement announced
  Sempra Generation and Riverstone announced an agreement to sell the jointly owned 632 MW Coleto Creek plant to International Power for $1.14 billion in cash.
  Source: Sempra Generation and Riverstone Announce Agreement To Sell Coleto Creek Power Plant (https://investor.sempra.com/static-files/8c23631c-8ad6-46d1-b360-4c42df944b71)
- 2007 — Environmental-control upgrade planned
  An industry project report described preliminary engineering and a planned baghouse installation at Coleto Creek, with installation scheduled for the first quarter of 2007 and completion targeted for May 2007. The report does not establish a net generation-capacity increase.
  Source: Texas Utilities Involved in Major Power Plant Upgrades (https://www.industrialinfo.com/news/article/texas-utilities-involved-in-major-power-plant-upgrades--101254)
- 2017-02 — Acquisition closed
  A subsidiary of Dynegy Inc. acquired all ownership interests in Coleto Creek Power LP as part of ENGIE's U.S. generation portfolio acquisition. No Coleto Creek-specific consideration disclosed.
  Source: ~ > X E T ~ (https://interchange.puc.texas.gov/Documents/59131_192_1593245.PDF)
- 2027 — Fuel conversion planned
  Coleto Creek is currently operating; coal operations are scheduled to cease by 2027, with repower the retiring coal facility on-site as a natural-gas-fueled dispatchable plant, with approximately 600–630 MW of capacity.
  Source: Form 10-K for Vistra Corp filed 02/27/2026 (https://filecache.investorroom.com/mr5ir_vistracorp_ir/339/VST_10-K_2026-02-27.pdf)

## Sources

- [Vistra Announces Plans to Add Up to 2,000 MW of Gas-Fueled Dispatchable Power in ERCOT - May 30, 2024](https://investor.vistracorp.com/2024-05-30-Vistra-Announces-Plans-to-Add-Up-to-2%2C000-MW-of-Gas-Fueled-Dispatchable-Power-in-ERCOT) — investor.vistracorp.com · tier other
- [Source](https://mbrweb.ferc.gov/SearchlkpEIA/Index?page=138) — mbrweb.ferc.gov · tier regulatory
- [Source](https://www.ercot.com/files/docs/2021/02/15/Resource_list_021421_2100.pdf) — ercot.com · tier regulatory
- [Document Comments](https://www.regulations.gov/document/EPA-R06-OAR-2016-0611-0064/comment) — regulations.gov · tier regulatory
- [Comment Period Ended](https://www.regulations.gov/document/EPA-R06-OAR-2014-0754-0045/comment) — regulations.gov · tier regulatory
- [Source](https://downloads.regulations.gov/EPA-R06-OAR-2014-0754-0008/attachment_101.pdf) — downloads.regulations.gov · tier regulatory
- [Texas regulators approve AEP upgrades for transmission segments](https://www.renewableenergyworld.com/power-grid/grid-modernization/texas-regulators-approve-aep-upgrades-for-transmission-segments/) — renewableenergyworld.com · tier other
- [Instructions](https://www.ercot.com/files/docs/2010/08/12/ercot_5ytp_update_08132010.ppt) — ercot.com · tier regulatory
- [Coleto Creek Park](https://www.gbra.org/recreation/coleto-creek-park/) — gbra.org · tier other
- [Texas Utilities Involved in Major Power Plant Upgrades](https://www.industrialinfo.com/news/article/texas-utilities-involved-in-major-power-plant-upgrades--101254) — industrialinfo.com · tier other
- [Source](https://power-technology.com/data-insights/power-plant-profile-coleto-creek-power-plant-us) — power-technology.com · tier other
- [Steam Power | GE Vernova](https://www.gevernova.com/steam-power) — gevernova.com · tier other
- [In focus: Combustion Engineering | GE Vernova](https://www.gevernova.com/steam-power/services/boilers/legacy-boiler-services) — gevernova.com · tier other
- [Sempra Energy and Carlyle/Riverstone Complete Acquisition of Cleto Creek Power in Texas | Carlyle](https://www.carlyle.com/media-room/news-release-archive/sempra-energy-and-carlyle-riverstone-complete-acquisition-cleto) — carlyle.com · tier other
- [Sempra Generation and Riverstone Announce Agreement To Sell Coleto Creek Power Plant](https://investor.sempra.com/static-files/8c23631c-8ad6-46d1-b360-4c42df944b71) — investor.sempra.com · tier other
- [Riverstone Holdings and The Carlyle Group Announce ...](https://www.carlyle.com/media-room/news-release-archive/riverstone-holdings-and-carlyle-group-announce-closing-coleto-creek) — carlyle.com · tier other
- [International Power plc and GDF SUEZ Successfully ...](https://www.engieresources.com/market-insight/international-power-plc-and-gdf-suez-successfully-create-a-global-leader-in-independent-power-generation/) — engieresources.com · tier other
- [Vistra to Shut down Another Texas Coal Plant](https://www.rtoinsider.com/19597-vistra-to-shut-down-another-texas-coal-plant/) — rtoinsider.com · tier other
- [Vistra Announces Plans to Build New Gas-Fueled Dispatchable Power Units in the Permian Basin - Sep 29, 2025](https://investor.vistracorp.com/2025-09-29-Vistra-Announces-Plans-to-Build-New-Gas-Fueled-Dispatchable-Power-Units-in-the-Permian-Basin) — investor.vistracorp.com · tier other
- [Coleto Creek Power LP's Rating Withdrawn Upon Deb | S&P Global Ratings](https://www.spglobal.com/ratings/en/regulatory/article/-/view/type/HTML/id/852265) — spglobal.com · tier other
- [Form 10-K for Vistra Corp filed 02/27/2026](https://filecache.investorroom.com/mr5ir_vistracorp_ir/339/VST_10-K_2026-02-27.pdf) — filecache.investorroom.com · tier other
- [Monthly Outlook for Resource Adequacy (MORA)](https://www.ercot.com/files/docs/2026/05/01/MORA_July2026.pdf) — ercot.com · tier regulatory
- [Stand-Alone Generation Resources as of 09.01.25.pdf](https://www.ercot.com/files/MarketNotice/2025/08/297735/Stand-Alone%20Generation%20Resources%20as%20of%2009.01.25.pdf) — ercot.com · tier regulatory

## Data quality

- Capacity is reported differently across records: EIA/FERC records list 622.4 MW nameplate capacity and 655 MW summer and winter capacity, while transaction-era releases describe the unit as 632 MW or 635 MW. A 2006 industry report described a planned 2007 baghouse installation and pollution-control work at Coleto Creek; the cited material does not establish a completed net capacity expansion. The $430 million 2004 figure and $3.3 billion 2017 figure were portfolio transaction values, not standalone Coleto Creek purchase prices. Vistra’s repowering announcements describe planned natural-gas conversion and approximately 600–630 MW of restored or additional generation, but do not provide a commercial-operation date for the repowered facility.

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