# Hanging Rock Energy Facility

PJM Natural Gas Fired Combined Cycle · https://askthegrid.com/assets/facilities/hanging-rock-energy-facility

Hanging Rock Energy Facility is a natural gas-fired power facility with 1,429.8 MW of EIA-reported nameplate capacity in Lawrence County, Ohio, registered as EIA Plant ID 55736. Its grid role is pJM generation-capacity resource using combined-cycle gas generation; the available records do not establish a baseload or peaking designation.

## Key facts

- Technology: Natural Gas Fired Combined Cycle
- Power capacity: 1429.8000000000002 MW
- Operating status: operating

## Grid and market context

- ISO/RTO: PJM
- Balancing authority: PJM Interconnection, LLC (PJM)

## Source-backed facts

- Owner logo domain: vistracorp.com — Vistra Corp.: Home · confidence: high
- Identifiers: [{"value":"55736","system":"EIA plant ID"},{"value":"PJM Interconnection, LLC (PJM)","system":"ISO/RTO"},{"value":"1GT1; 1GT2; 1ST; 2GT1; 2GT2; 2ST","system":"EIA generator IDs"},{"value":"CC1; CC2","system":"EIA unit codes"},{"value":"13712; 13713; 13714","system":"FERC MBR EIA cross-reference IDs"},{"value":"11-2064-000","system":"FERC docket"},{"value":"HANGING ROCK 1GT1; HANGING ROCK 1GT2; HANGING ROCK 2GT1; HANGING ROCK 2GT2; HANGING ROCK CC1; HANGING ROCK CC2","system":"PJM market resources"}] — PJM Units Subject to RPM Must Offer Obligation · confidence: medium
- Identifiers.6: {"value":"HANGING ROCK 1GT1; HANGING ROCK 1GT2; HANGING ROCK 2GT1; HANGING ROCK 2GT2; HANGING ROCK CC1; HANGING ROCK CC2","system":"PJM market resources"} — PJM Units Subject to RPM Must Offer Obligation · confidence: medium
- Parties.4: {"relationship":"Historical owner","name":"Duke Energy","official_url":"https://www.duke-energy.com/"} — Duke Energy to sell non-regulated Midwest generation business to Dynegy | Duke Energy | News Center · confidence: high
- Parties.5: {"relationship":"Engineering, procurement and construction contractor","name":"Duke/Fluor Daniel","official_url":null} — Duke/Fluor Daniel awarded contract for Ohio plant · confidence: medium
- Construction scope: Four General Electric PG7241 FA/7FA gas-turbine generators rated at 155 MW each, four heat-recovery steam generators, and two General Electric D11 steam-turbine generators. EIA plant records identify six operating generating units totaling 1,429.8 MW. — Hanging Rock Energy Facility · confidence: medium
- Product url: https://www.gevernova.com/gas-power/products/gas-turbines/7f — 7F Heavy Duty Gas Turbine | 7F.04/7F.05 | GE Vernova · confidence: medium
- Manufacturer domain: gevernova.com — 7F Heavy Duty Gas Turbine | 7F.04/7F.05 | GE Vernova · confidence: medium
- Equipment models: [{"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/products/gas-turbines/7f","count":4,"unit_mw":155,"name":"General Electric PG7241 FA / 7FA.03 gas-turbine generators"},{"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/products/steam-turbines","count":2,"unit_mw":317.1,"name":"General Electric D11 steam-turbine generators"},{"manufacturer_domain":null,"product_url":null,"count":4,"unit_mw":null,"name":"Heat-recovery steam generators (HRSGs)"}] — Hanging Rock Energy Facility · confidence: medium
- Product family: GE 7F gas turbine family, including PG7241 FA / 7FA.03, with GE D11 steam turbines — Hanging Rock Energy Facility · confidence: medium
- Manufacturer name: General Electric (GE) — Hanging Rock Energy Facility · confidence: high
- Manufacturer name: General Electric (GE) — Hanging Rock Energy Facility · confidence: high
- Equipment models.0: {"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/products/gas-turbines/7f","count":4,"unit_mw":155,"name":"General Electric PG7241 FA / 7FA.03 gas-turbine generators"} — Hanging Rock Energy Facility · confidence: medium
- Equipment models.1: {"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/gas-power/products/steam-turbines","count":2,"unit_mw":317.1,"name":"General Electric D11 steam-turbine generators"} — Hanging Rock Energy Facility · confidence: medium
- Equipment models.2: {"manufacturer_domain":null,"product_url":null,"count":4,"unit_mw":null,"name":"Heat-recovery steam generators (HRSGs)"} — Hanging Rock Energy Facility · confidence: high
- Description: Hanging Rock Energy Facility is a natural-gas-fired combined-cycle power plant in Lawrence County, Ohio, with six generating units totaling 1,429.8 MW of nameplate capacity. The original design used two pairs of General Electric 7FA combustion-turbine generators, heat-recovery steam generators, and General Electric D11 steam-turbine generators. Fluor, through Duke/Fluor Daniel, provided turnkey engineering, procurement, construction, and commissioning services for Duke Energy North America. Commercial operation began in June 2003 at an initial capacity of 1,240 MW. Duke Energy sold the facility as part of its non-regulated Midwest generation portfolio to Dynegy, and Vistra Corp. is the current parent owner. — Duke/Fluor Daniel awarded contract for Ohio plant · confidence: medium
- Description: Hanging Rock Energy Facility is a natural-gas-fired combined-cycle power plant in Lawrence County, Ohio, with six generating units totaling 1,429.8 MW of nameplate capacity. The original design used two pairs of General Electric 7FA combustion-turbine generators, heat-recovery steam generators, and General Electric D11 steam-turbine generators. Fluor, through Duke/Fluor Daniel, provided turnkey engineering, procurement, construction, and commissioning services for Duke Energy North America. Commercial operation began in June 2003 at an initial capacity of 1,240 MW. Duke Energy sold the facility as part of its non-regulated Midwest generation portfolio to Dynegy, and Vistra Corp. is the current parent owner. — Source · confidence: medium
- Description: Hanging Rock Energy Facility is a natural-gas-fired combined-cycle power plant in Lawrence County, Ohio, with six generating units totaling 1,429.8 MW of nameplate capacity. The original design used two pairs of General Electric 7FA combustion-turbine generators, heat-recovery steam generators, and General Electric D11 steam-turbine generators. Fluor, through Duke/Fluor Daniel, provided turnkey engineering, procurement, construction, and commissioning services for Duke Energy North America. Commercial operation began in June 2003 at an initial capacity of 1,240 MW. Duke Energy sold the facility as part of its non-regulated Midwest generation portfolio to Dynegy, and Vistra Corp. is the current parent owner. — Source · confidence: medium
- Quality notes: ["EIA-derived plant data reports 1,429.8 MW and six generating units, while a 2025 Ohio EPA NPDES fact sheet describes the facility as capable of generating 1,340 MW; this directory uses the EIA plant-55736 nameplate figure.","The $2.8 billion amount was cash consideration for Duke Energy's Midwest portfolio, which included 11 power plants and the Ohio retail business; no plant-level allocation to Hanging Rock was disclosed.","GE's disclosed 210 MW output increase applied to a four-plant Dynegy upgrade program and should not be assigned entirely to Hanging Rock.","The 2025 Ohio EPA permit fact sheet states that there was no proposed production end date for the facility; no retirement date is included here."] — GE Upgrades Oregon Power Plant to Prepare for Seasonal Demand Challenges | GE News · confidence: high
- Financing summary: The reported construction cost was $502 million. No project-specific lender, debt amount, or financial-close structure is identified in the available project record. Separately, Dynegy's August 2014 acquisition financing covered the broader Duke portfolio: the Duke purchase price was $2.8 billion in cash, with committed bridge financing and a planned approximately $5 billion of new unsecured notes plus approximately $1.25 billion of equity and equity-linked securities. Those financing amounts relate to the portfolio acquisition, not a Hanging Rock project-finance facility. — Source · confidence: medium
- Financing summary: The reported construction cost was $502 million. No project-specific lender, debt amount, or financial-close structure is identified in the available project record. Separately, Dynegy's August 2014 acquisition financing covered the broader Duke portfolio: the Duke purchase price was $2.8 billion in cash, with committed bridge financing and a planned approximately $5 billion of new unsecured notes plus approximately $1.25 billion of equity and equity-linked securities. Those financing amounts relate to the portfolio acquisition, not a Hanging Rock project-finance facility. — Duke/Fluor Daniel awarded contract for Ohio plant · confidence: medium
- Timeline: [{"event":"Construction began","date":"2001","detail":"Construction of Hanging Rock began before the plant entered commercial service."},{"event":"EPC contract awarded","date":"2002-04-15","detail":"Duke/Fluor Daniel was awarded a turnkey engineering, procurement, and construction contract by Duke Energy North America for the 1,240 MW facility. The contract value was not disclosed."},{"event":"Commercial operation","date":"2003-06","detail":"The project was commissioned in June 2003, initially with 1,240 MW of capacity."},{"event":"Sale agreement announced","date":"2014-08-22","detail":"Dynegy signed definitive agreements to acquire ownership interests in Duke Energy's Midwest generation assets, with Hanging Rock specifically included in the Duke portfolio."},{"event":"Acquisition completed","date":"2015-04-02","detail":"Duke Energy completed the sale of its non-regulated Midwest Commercial Generation Business to Dynegy for $2.8 billion in cash. The transaction included 11 power plants and Duke's competitive Ohio retail business."},{"event":"Combustion-turbine upgrade program","date":"2015-12","detail":"GE announced an agreement under which Dynegy would upgrade four power plants, including Hanging Rock, Washington, and Fayette in Ohio. GE described the combined four-plant program as increasing output by 210 MW; a Hanging Rock-specific increase was not stated."},{"event":"Current operating status","date":"2025","detail":"The Ohio EPA's 2025 NPDES fact sheet states that there was no proposed production end date for the facility."},{"event":"Continued operation","date":"2026","detail":"A 2026 plant record identifies six generators and reports 2.0 TWh of generation during February-May 2026, consistent with continued operation."}] — Source · confidence: medium
- Timeline: [{"event":"Construction began","date":"2001","detail":"Construction of Hanging Rock began before the plant entered commercial service."},{"event":"EPC contract awarded","date":"2002-04-15","detail":"Duke/Fluor Daniel was awarded a turnkey engineering, procurement, and construction contract by Duke Energy North America for the 1,240 MW facility. The contract value was not disclosed."},{"event":"Commercial operation","date":"2003-06","detail":"The project was commissioned in June 2003, initially with 1,240 MW of capacity."},{"event":"Sale agreement announced","date":"2014-08-22","detail":"Dynegy signed definitive agreements to acquire ownership interests in Duke Energy's Midwest generation assets, with Hanging Rock specifically included in the Duke portfolio."},{"event":"Acquisition completed","date":"2015-04-02","detail":"Duke Energy completed the sale of its non-regulated Midwest Commercial Generation Business to Dynegy for $2.8 billion in cash. The transaction included 11 power plants and Duke's competitive Ohio retail business."},{"event":"Combustion-turbine upgrade program","date":"2015-12","detail":"GE announced an agreement under which Dynegy would upgrade four power plants, including Hanging Rock, Washington, and Fayette in Ohio. GE described the combined four-plant program as increasing output by 210 MW; a Hanging Rock-specific increase was not stated."},{"event":"Current operating status","date":"2025","detail":"The Ohio EPA's 2025 NPDES fact sheet states that there was no proposed production end date for the facility."},{"event":"Continued operation","date":"2026","detail":"A 2026 plant record identifies six generators and reports 2.0 TWh of generation during February-May 2026, consistent with continued operation."}] — Duke/Fluor Daniel awarded contract for Ohio plant · confidence: medium
- Timeline: [{"event":"Construction began","date":"2001","detail":"Construction of Hanging Rock began before the plant entered commercial service."},{"event":"EPC contract awarded","date":"2002-04-15","detail":"Duke/Fluor Daniel was awarded a turnkey engineering, procurement, and construction contract by Duke Energy North America for the 1,240 MW facility. The contract value was not disclosed."},{"event":"Commercial operation","date":"2003-06","detail":"The project was commissioned in June 2003, initially with 1,240 MW of capacity."},{"event":"Sale agreement announced","date":"2014-08-22","detail":"Dynegy signed definitive agreements to acquire ownership interests in Duke Energy's Midwest generation assets, with Hanging Rock specifically included in the Duke portfolio."},{"event":"Acquisition completed","date":"2015-04-02","detail":"Duke Energy completed the sale of its non-regulated Midwest Commercial Generation Business to Dynegy for $2.8 billion in cash. The transaction included 11 power plants and Duke's competitive Ohio retail business."},{"event":"Combustion-turbine upgrade program","date":"2015-12","detail":"GE announced an agreement under which Dynegy would upgrade four power plants, including Hanging Rock, Washington, and Fayette in Ohio. GE described the combined four-plant program as increasing output by 210 MW; a Hanging Rock-specific increase was not stated."},{"event":"Current operating status","date":"2025","detail":"The Ohio EPA's 2025 NPDES fact sheet states that there was no proposed production end date for the facility."},{"event":"Continued operation","date":"2026","detail":"A 2026 plant record identifies six generators and reports 2.0 TWh of generation during February-May 2026, consistent with continued operation."}] — Source · confidence: medium
- Timeline: [{"event":"Construction began","date":"2001","detail":"Construction of Hanging Rock began before the plant entered commercial service."},{"event":"EPC contract awarded","date":"2002-04-15","detail":"Duke/Fluor Daniel was awarded a turnkey engineering, procurement, and construction contract by Duke Energy North America for the 1,240 MW facility. The contract value was not disclosed."},{"event":"Commercial operation","date":"2003-06","detail":"The project was commissioned in June 2003, initially with 1,240 MW of capacity."},{"event":"Sale agreement announced","date":"2014-08-22","detail":"Dynegy signed definitive agreements to acquire ownership interests in Duke Energy's Midwest generation assets, with Hanging Rock specifically included in the Duke portfolio."},{"event":"Acquisition completed","date":"2015-04-02","detail":"Duke Energy completed the sale of its non-regulated Midwest Commercial Generation Business to Dynegy for $2.8 billion in cash. The transaction included 11 power plants and Duke's competitive Ohio retail business."},{"event":"Combustion-turbine upgrade program","date":"2015-12","detail":"GE announced an agreement under which Dynegy would upgrade four power plants, including Hanging Rock, Washington, and Fayette in Ohio. GE described the combined four-plant program as increasing output by 210 MW; a Hanging Rock-specific increase was not stated."},{"event":"Current operating status","date":"2025","detail":"The Ohio EPA's 2025 NPDES fact sheet states that there was no proposed production end date for the facility."},{"event":"Continued operation","date":"2026","detail":"A 2026 plant record identifies six generators and reports 2.0 TWh of generation during February-May 2026, consistent with continued operation."}] — GE's Power Services Business Signs Agreement with... · confidence: medium
- Timeline: [{"event":"Construction began","date":"2001","detail":"Construction of Hanging Rock began before the plant entered commercial service."},{"event":"EPC contract awarded","date":"2002-04-15","detail":"Duke/Fluor Daniel was awarded a turnkey engineering, procurement, and construction contract by Duke Energy North America for the 1,240 MW facility. The contract value was not disclosed."},{"event":"Commercial operation","date":"2003-06","detail":"The project was commissioned in June 2003, initially with 1,240 MW of capacity."},{"event":"Sale agreement announced","date":"2014-08-22","detail":"Dynegy signed definitive agreements to acquire ownership interests in Duke Energy's Midwest generation assets, with Hanging Rock specifically included in the Duke portfolio."},{"event":"Acquisition completed","date":"2015-04-02","detail":"Duke Energy completed the sale of its non-regulated Midwest Commercial Generation Business to Dynegy for $2.8 billion in cash. The transaction included 11 power plants and Duke's competitive Ohio retail business."},{"event":"Combustion-turbine upgrade program","date":"2015-12","detail":"GE announced an agreement under which Dynegy would upgrade four power plants, including Hanging Rock, Washington, and Fayette in Ohio. GE described the combined four-plant program as increasing output by 210 MW; a Hanging Rock-specific increase was not stated."},{"event":"Current operating status","date":"2025","detail":"The Ohio EPA's 2025 NPDES fact sheet states that there was no proposed production end date for the facility."},{"event":"Continued operation","date":"2026","detail":"A 2026 plant record identifies six generators and reports 2.0 TWh of generation during February-May 2026, consistent with continued operation."}] — GE Upgrades Oregon Power Plant to Prepare for Seasonal Demand Challenges | GE News · confidence: medium
- Timeline: [{"event":"Construction began","date":"2001","detail":"Construction of Hanging Rock began before the plant entered commercial service."},{"event":"EPC contract awarded","date":"2002-04-15","detail":"Duke/Fluor Daniel was awarded a turnkey engineering, procurement, and construction contract by Duke Energy North America for the 1,240 MW facility. The contract value was not disclosed."},{"event":"Commercial operation","date":"2003-06","detail":"The project was commissioned in June 2003, initially with 1,240 MW of capacity."},{"event":"Sale agreement announced","date":"2014-08-22","detail":"Dynegy signed definitive agreements to acquire ownership interests in Duke Energy's Midwest generation assets, with Hanging Rock specifically included in the Duke portfolio."},{"event":"Acquisition completed","date":"2015-04-02","detail":"Duke Energy completed the sale of its non-regulated Midwest Commercial Generation Business to Dynegy for $2.8 billion in cash. The transaction included 11 power plants and Duke's competitive Ohio retail business."},{"event":"Combustion-turbine upgrade program","date":"2015-12","detail":"GE announced an agreement under which Dynegy would upgrade four power plants, including Hanging Rock, Washington, and Fayette in Ohio. GE described the combined four-plant program as increasing output by 210 MW; a Hanging Rock-specific increase was not stated."},{"event":"Current operating status","date":"2025","detail":"The Ohio EPA's 2025 NPDES fact sheet states that there was no proposed production end date for the facility."},{"event":"Continued operation","date":"2026","detail":"A 2026 plant record identifies six generators and reports 2.0 TWh of generation during February-May 2026, consistent with continued operation."}] — Microsoft Word - 505e0839-f2d2-444c-a807-dc0065c1bf92 · confidence: medium
- Quality notes.0: EIA-derived plant data reports 1,429.8 MW and six generating units, while a 2025 Ohio EPA NPDES fact sheet describes the facility as capable of generating 1,340 MW; this directory uses the EIA plant-55736 nameplate figure. — Duke/Fluor Daniel awarded contract for Ohio plant · confidence: medium
- Quality notes.0: EIA-derived plant data reports 1,429.8 MW and six generating units, while a 2025 Ohio EPA NPDES fact sheet describes the facility as capable of generating 1,340 MW; this directory uses the EIA plant-55736 nameplate figure. — GE Upgrades Oregon Power Plant to Prepare for Seasonal Demand Challenges | GE News · confidence: medium
- Quality notes.1: The $2.8 billion amount was cash consideration for Duke Energy's Midwest portfolio, which included 11 power plants and the Ohio retail business; no plant-level allocation to Hanging Rock was disclosed. — GE Upgrades Oregon Power Plant to Prepare for Seasonal Demand Challenges | GE News · confidence: high
- Quality notes.2: GE's disclosed 210 MW output increase applied to a four-plant Dynegy upgrade program and should not be assigned entirely to Hanging Rock. — Microsoft Word - 505e0839-f2d2-444c-a807-dc0065c1bf92 · confidence: high
- Timeline.0: {"event":"Construction began","date":"2001","detail":"Construction of Hanging Rock began before the plant entered commercial service."} — Source · confidence: medium
- Timeline.1: {"event":"EPC contract awarded","date":"2002-04-15","detail":"Duke/Fluor Daniel was awarded a turnkey engineering, procurement, and construction contract by Duke Energy North America for the 1,240 MW facility. The contract value was not disclosed."} — Duke/Fluor Daniel awarded contract for Ohio plant · confidence: high
- Timeline.2: {"event":"Commercial operation","date":"2003-06","detail":"The project was commissioned in June 2003, initially with 1,240 MW of capacity."} — Source · confidence: high
- Timeline.5: {"event":"Combustion-turbine upgrade program","date":"2015-12","detail":"GE announced an agreement under which Dynegy would upgrade four power plants, including Hanging Rock, Washington, and Fayette in Ohio. GE described the combined four-plant program as increasing output by 210 MW; a Hanging Rock-specific increase was not stated."} — GE's Power Services Business Signs Agreement with... · confidence: medium
- Timeline.5: {"event":"Combustion-turbine upgrade program","date":"2015-12","detail":"GE announced an agreement under which Dynegy would upgrade four power plants, including Hanging Rock, Washington, and Fayette in Ohio. GE described the combined four-plant program as increasing output by 210 MW; a Hanging Rock-specific increase was not stated."} — GE Upgrades Oregon Power Plant to Prepare for Seasonal Demand Challenges | GE News · confidence: medium
- Timeline.6: {"event":"Current operating status","date":"2025","detail":"The Ohio EPA's 2025 NPDES fact sheet states that there was no proposed production end date for the facility."} — Microsoft Word - 505e0839-f2d2-444c-a807-dc0065c1bf92 · confidence: high
- Commercial parties.0: {"relationship":"Current owner and parent operator","name":"Vistra Corp.","detail":"Vistra is the current parent owner associated with the Hanging Rock Energy Facility; its Ohio portfolio materials list Hanging Rock in Ironton as a 1,430 MW gas facility.","official_url":"https://vistracorp.com/"} — Source · confidence: medium
- Commercial parties.0: {"relationship":"Current owner and parent operator","name":"Vistra Corp.","detail":"Vistra is the current parent owner associated with the Hanging Rock Energy Facility; its Ohio portfolio materials list Hanging Rock in Ironton as a 1,430 MW gas facility.","official_url":"https://vistracorp.com/"} — Source · confidence: medium
- Commercial parties.2: {"relationship":"Predecessor owner and seller","name":"Duke Energy","detail":"Duke Energy North America developed the project and was the predecessor owner. Duke sold Hanging Rock as part of its non-regulated Midwest Commercial Generation Business to Dynegy.","official_url":"https://www.duke-energy.com/"} — Duke Energy to sell non-regulated Midwest generation business to Dynegy | Duke Energy | News Center · confidence: high
- Commercial parties.3: {"relationship":"Engineering, procurement, construction, and commissioning contractor","name":"Fluor (Duke/Fluor Daniel)","detail":"Duke/Fluor Daniel received the turnkey EPC contract, and Fluor identifies its scope as engineering, procurement, construction, and commissioning for the net 1,240 MW merchant combined-cycle project.","official_url":"https://www.fluor.com/"} — Duke/Fluor Daniel awarded contract for Ohio plant · confidence: high
- Commercial parties.3: {"relationship":"Engineering, procurement, construction, and commissioning contractor","name":"Fluor (Duke/Fluor Daniel)","detail":"Duke/Fluor Daniel received the turnkey EPC contract, and Fluor identifies its scope as engineering, procurement, construction, and commissioning for the net 1,240 MW merchant combined-cycle project.","official_url":"https://www.fluor.com/"} — Hanging Rock Energy Facility · confidence: high
- Commercial parties.4: {"relationship":"Combustion-turbine equipment supplier and upgrade provider","name":"General Electric","detail":"The original facility used GE 7FA combustion-turbine generators and GE D11 steam-turbine equipment. GE later supplied advanced gas-path and related upgrade work for Dynegy's fleet, including Hanging Rock.","official_url":"https://www.ge.com/"} — GE Upgrades Oregon Power Plant to Prepare for Seasonal Demand Challenges | GE News · confidence: medium
- Commercial parties.4: {"relationship":"Combustion-turbine equipment supplier and upgrade provider","name":"General Electric","detail":"The original facility used GE 7FA combustion-turbine generators and GE D11 steam-turbine equipment. GE later supplied advanced gas-path and related upgrade work for Dynegy's fleet, including Hanging Rock.","official_url":"https://www.ge.com/"} — Duke/Fluor Daniel awarded contract for Ohio plant · confidence: medium
- Commercial parties.6: {"relationship":"Regional transmission organization and market operator","name":"PJM Interconnection, LLC","detail":"Hanging Rock participates in the PJM market; PJM records identify resources including HANGING ROCK 1GT1, 1GT2, 2GT1, 2GT2, CC1, and CC2.","official_url":"https://www.pjm.com/"} — Asset Appendix Report - MBR Portal - FERC · confidence: medium
- Commercial parties.6: {"relationship":"Regional transmission organization and market operator","name":"PJM Interconnection, LLC","detail":"Hanging Rock participates in the PJM market; PJM records identify resources including HANGING ROCK 1GT1, 1GT2, 2GT1, 2GT2, CC1, and CC2.","official_url":"https://www.pjm.com/"} — PJM Units Subject to RPM Must Offer Obligation · confidence: medium
- Interconnection voltage kv: 765 — Reliability Resource Initiative Additional Summaries · confidence: medium
- Resource type: GEN — RPM Must Offer Obligation · confidence: medium
- Grid role: PJM generation-capacity resource using combined-cycle gas generation; the available records do not establish a baseload or peaking designation. — RPM Must Offer Obligation · confidence: medium

## Timeline

- 2001 — Construction began
  Construction of Hanging Rock began before the plant entered commercial service.
  Source: Source (https://en.wikipedia.org/wiki/Hanging_Rock_Energy_Facility)
- 2002-04-15 — EPC contract awarded
  Duke/Fluor Daniel was awarded a turnkey engineering, procurement, and construction contract by Duke Energy North America for the 1,240 MW facility. The contract value was not disclosed.
  Source: Duke/Fluor Daniel awarded contract for Ohio plant (https://www.renewableenergyworld.com/hydro-power/dams-civil-structures/duke-fluor-daniel-awarded-contract-for-ohio-plant/)
- 2015-04-02 — Acquisition completed
  Duke Energy completed the sale of its non-regulated Midwest Commercial Generation Business to Dynegy for $2.8 billion in cash. The transaction included 11 power plants and Duke's competitive Ohio retail business.
  Source: Duke Energy completes sale of its non-regulated Midwest generation business to Dynegy | Duke Energy | News Center (https://news.duke-energy.com/releases/duke-energy-completes-sale-of-its-non-regulated-midwest-generation-business-to-dynegy)

## Sources

- [Vistra Corp.: Home](https://vistracorp.com/) — vistracorp.com · tier other
- [PJM Units Subject to RPM Must Offer Obligation](https://www.monitoringanalytics.com/reports/market_messages/messages/imm_units_subject_to_rpm_must_offer_obligation_20110627.pdf) — monitoringanalytics.com · tier other
- [Source](https://hub.vistracorp.com/wp-content/uploads/2019/05/vistra-in-ohio-r2.pdf) — hub.vistracorp.com · tier other
- [Microsoft Word - 505e0839-f2d2-444c-a807-dc0065c1bf92](https://dam.assets.ohio.gov/image/upload/epa.ohio.gov/Portals/35/permits/doc/0IB00032.fs.pdf) — dam.assets.ohio.gov · tier regulatory
- [Asset Appendix Report - MBR Portal - FERC](https://mbrweb.ferc.gov/SearchMBRAssetAppendix/AssetAppendixDetails?page=2&AssetAppendixId=13139) — mbrweb.ferc.gov · tier regulatory
- [Duke Energy to sell non-regulated Midwest generation business to Dynegy | Duke Energy | News Center](https://news.duke-energy.com/releases/duke-energy-to-sell-non-regulated-midwest-generation-business-to-dynegy) — news.duke-energy.com · tier other
- [Duke/Fluor Daniel awarded contract for Ohio plant](https://www.renewableenergyworld.com/hydro-power/dams-civil-structures/duke-fluor-daniel-awarded-contract-for-ohio-plant/) — renewableenergyworld.com · tier other
- [Federal Register :: Texas Eastern Transmission. L.P.; Notice of Intent To Prepare an Environmental Assessment for the Proposed Hanging Rock Lateral Project and Request for Comments on Environmental Issues](https://www.federalregister.gov/documents/2002/01/31/02-2288/texas-eastern-transmission-lp-notice-of-intent-to-prepare-an-environmental-assessment-for-the) — federalregister.gov · tier regulatory
- [Hanging Rock Energy Facility](https://www.fluorconstructors.com/project-experience/project-details-hanging-rock) — fluorconstructors.com · tier other
- [Hanging Rock Energy Facility](https://en.wikipedia.org/wiki/Hanging_Rock_Energy_Facility) — en.wikipedia.org · tier other
- [Source](https://downloads.regulations.gov/EPA-HQ-OAR-2013-0602-22760/attachment_15.pdf) — downloads.regulations.gov · tier regulatory
- [7F Heavy Duty Gas Turbine | 7F.04/7F.05 | GE Vernova](https://www.gevernova.com/gas-power/products/gas-turbines/7f) — gevernova.com · tier other
- [Source](https://power-technology.com/data-insights/power-plant-profile-hanging-rock-combined-cycle-power-plant-us) — power-technology.com · tier other
- [GE Upgrades Oregon Power Plant to Prepare for Seasonal Demand Challenges | GE News](https://www.ge.com/news/press-releases/ge-upgrades-oregon-power-plant-prepare-seasonal-demand-challenges) — ge.com · tier other
- [Duke Energy completes sale of its non-regulated Midwest ...](https://news.duke-energy.com/releases/duke-energy-completes-sale-of-its-non-regulated-midwest-generation-business-to-dynegy) — news.duke-energy.com · tier other
- [Source](https://www.sec.gov/Archives/edgar/data/1379895/000110465914062614/a14-19556_1ex99d1.htm) — sec.gov · tier regulatory
- [GE's Power Services Business Signs Agreement with ...](https://www.ge.com/news/press-releases/ges-power-services-business-signs-agreement-dynegy-modernize-four-power-plants) — ge.com · tier other
- [Reliability Resource Initiative Additional Summaries](https://www.pjm.com/-/media/DotCom/committees-groups/committees/pc/2025/20250506/20250506-rri-addendum---post-meeting.pdf) — pjm.com · tier other
- [vistra-20241231](https://www.sec.gov/Archives/edgar/data/1692819/000169281925000013/vistra-20241231.htm) — sec.gov · tier regulatory
- [RPM Must Offer Obligation](https://www.monitoringanalytics.com/reports/market_messages/messages/IMM_Notice_re_RPM_Must_Offer_Obligations_20260223.pdf) — monitoringanalytics.com · tier other

## Data quality

- EIA-derived plant data reports 1,429.8 MW and six generating units, while a 2025 Ohio EPA NPDES fact sheet describes the facility as capable of generating 1,340 MW; this directory uses the EIA plant-55736 nameplate figure. GE's disclosed 210 MW output increase applied to a four-plant Dynegy upgrade program and should not be assigned entirely to Hanging Rock.

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