# Rolling Hills Generating

PJM Natural Gas Fired Combustion Turbine · https://askthegrid.com/assets/facilities/rolling-hills-generating

Rolling Hills Generating is a natural gas-fired power facility with 977.5 MW of EIA-reported nameplate capacity in Vinton County, Ohio, registered as EIA Plant ID 55401. The plant's generating configuration is five Siemens natural-gas combustion turbines operating in simple-cycle configuration (5 0).

## Key facts

- Technology: Natural Gas Fired Combustion Turbine
- Power capacity: 977.5 MW
- Operating status: operating

## Grid and market context

- ISO/RTO: PJM
- Balancing authority: PJM Interconnection
- Substation: Flat Lick (Flatlick) Substation
- Point of interconnection: Flat Lick (Flatlick) Substation
- Transmission owner: American Electric Power (AEP)
- Interconnection voltage: 345 kV

## Source-backed facts

- Owner logo domain: capitalpower.com — Rolling Hills Generating - Capital Power · confidence: medium
- Identifiers: [{"value":"55401","system":"EIA plant ID"},{"value":"C000219","system":"FERC MBR company ID"},{"value":"10349","system":"FERC MBR asset appendix serial"},{"value":"ER02-553-000","system":"FERC MBR docket"},{"value":"PJM","system":"ISO/RTO"},{"value":"CT1","system":"FERC generator ID"},{"value":"CT2","system":"FERC generator ID"},{"value":"CT3","system":"FERC generator ID"},{"value":"CT4","system":"FERC generator ID"},{"value":"CT5","system":"FERC generator ID"}] — MBR | Asset Appendix Report · confidence: medium
- Description: Rolling Hills Generating is a natural-gas peaking facility in Wilkesville, Ohio, in operation since 2003. Capital Power lists the facility at 1,023 MW and states that it provides capacity and energy to PJM Interconnection and American Electric Power. The facility uses five Siemens combustion turbines in simple-cycle configuration. — Rolling Hills Generating - Capital Power · confidence: medium
- Parties: [{"relationship":"Legal plant owner","name":"Rolling Hills Generating, LLC","official_url":"https://www.capitalpower.com/operations/rolling-hills-generating/"},{"relationship":"Parent owner and operator","name":"Capital Power Corporation","official_url":"https://www.capitalpower.com/"},{"relationship":"Combustion-turbine and generator OEM","name":"Siemens","official_url":"https://www.siemens-energy.com/"},{"relationship":"Former owner and seller","name":"LS Power Equity Advisors, LLC","official_url":"https://www.lspower.com/"},{"relationship":"Earlier seller affiliate","name":"ArcLight Capital Partners, LLC","official_url":"https://www.arclight.com/"}] — Capital Power completes acquisition of the Hummel and Rolling Hills facilities in PJM for US$2.2 billion (CAD ~$3.01 billion) - Capital Power · confidence: medium
- Parties: [{"relationship":"Legal plant owner","name":"Rolling Hills Generating, LLC","official_url":"https://www.capitalpower.com/operations/rolling-hills-generating/"},{"relationship":"Parent owner and operator","name":"Capital Power Corporation","official_url":"https://www.capitalpower.com/"},{"relationship":"Combustion-turbine and generator OEM","name":"Siemens","official_url":"https://www.siemens-energy.com/"},{"relationship":"Former owner and seller","name":"LS Power Equity Advisors, LLC","official_url":"https://www.lspower.com/"},{"relationship":"Earlier seller affiliate","name":"ArcLight Capital Partners, LLC","official_url":"https://www.arclight.com/"}] — Rolling Hills Generating - Capital Power · confidence: medium
- Parties: [{"relationship":"Legal plant owner","name":"Rolling Hills Generating, LLC","official_url":"https://www.capitalpower.com/operations/rolling-hills-generating/"},{"relationship":"Parent owner and operator","name":"Capital Power Corporation","official_url":"https://www.capitalpower.com/"},{"relationship":"Combustion-turbine and generator OEM","name":"Siemens","official_url":"https://www.siemens-energy.com/"},{"relationship":"Former owner and seller","name":"LS Power Equity Advisors, LLC","official_url":"https://www.lspower.com/"},{"relationship":"Earlier seller affiliate","name":"ArcLight Capital Partners, LLC","official_url":"https://www.arclight.com/"}] — LS Power Completes Acquisition of Rolling Hills Natural Gas Power Plant in Ohio - LS Power · confidence: medium
- Identifiers.0: {"value":"55401","system":"EIA plant ID"} — MBR | Asset Appendix Report · confidence: high
- Identifiers.1: {"value":"C000219","system":"FERC MBR company ID"} — MBR | Asset Appendix Report · confidence: high
- Identifiers.2: {"value":"10349","system":"FERC MBR asset appendix serial"} — MBR | Asset Appendix Report · confidence: high
- Identifiers.3: {"value":"ER02-553-000","system":"FERC MBR docket"} — MBR | Asset Appendix Report · confidence: high
- Identifiers.4: {"value":"PJM","system":"ISO/RTO"} — MBR | Asset Appendix Report · confidence: high
- Identifiers.5: {"value":"CT1","system":"FERC generator ID"} — MBR | Asset Appendix Report · confidence: high
- Identifiers.6: {"value":"CT2","system":"FERC generator ID"} — MBR | Asset Appendix Report · confidence: high
- Identifiers.7: {"value":"CT3","system":"FERC generator ID"} — MBR | Asset Appendix Report · confidence: high
- Identifiers.8: {"value":"CT4","system":"FERC generator ID"} — MBR | Asset Appendix Report · confidence: high
- Identifiers.9: {"value":"CT5","system":"FERC generator ID"} — MBR | Asset Appendix Report · confidence: high
- Parties.0: {"relationship":"Legal plant owner","name":"Rolling Hills Generating, LLC","official_url":"https://www.capitalpower.com/operations/rolling-hills-generating/"} — Capital Power completes acquisition of the Hummel and Rolling Hills facilities in PJM for US$2.2 billion (CAD ~$3.01 billion) - Capital Power · confidence: high
- Parties.1: {"relationship":"Parent owner and operator","name":"Capital Power Corporation","official_url":"https://www.capitalpower.com/"} — Capital Power completes acquisition of the Hummel and Rolling Hills facilities in PJM for US$2.2 billion (CAD ~$3.01 billion) - Capital Power · confidence: high
- Parties.2: {"relationship":"Combustion-turbine and generator OEM","name":"Siemens","official_url":"https://www.siemens-energy.com/"} — Rolling Hills Generating - Capital Power · confidence: medium
- Parties.3: {"relationship":"Former owner and seller","name":"LS Power Equity Advisors, LLC","official_url":"https://www.lspower.com/"} — Rolling Hills Generating - Capital Power · confidence: medium
- Parties.4: {"relationship":"Earlier seller affiliate","name":"ArcLight Capital Partners, LLC","official_url":"https://www.arclight.com/"} — Rolling Hills Generating - Capital Power · confidence: high
- Site acres: 180 — Capital Power Letterhead - Template · confidence: medium
- Unit configuration: Five Siemens natural-gas combustion turbines operating in simple-cycle configuration (5×0). — Capital Power Letterhead - Template · confidence: high
- Construction scope: Existing facility: five Siemens natural-gas combustion turbines operating in simple-cycle peaking configuration. The proposed conversion adding four HRSGs and two steam generators is not treated as installed equipment. — Rolling Hills Generating - Capital Power · confidence: medium
- Product url: https://www.siemens-energy.com/global/en/home/products-services/product/sgt6-5000f.html — SGT6-5000F Heavy-duty gas turbine (60 Hz) · confidence: high
- Kind: thermal — Rolling Hills Generating - Capital Power · confidence: high
- Equipment models: [{"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product/sgt6-5000f.html","count":5,"unit_mw":195.5,"name":"Siemens 501FD2 / SGT6-5000F heavy-duty gas turbine"}] — Rolling Hills Generating seeks permits for Ohio uprate project · confidence: medium
- Product family: SGT6-5000F — SGT6-5000F Heavy-duty gas turbine (60 Hz) · confidence: medium
- Manufacturer name: Siemens Energy — Rolling Hills Generating - Capital Power · confidence: high
- Manufacturer name: Siemens Energy — Rolling Hills Generating seeks permits for Ohio uprate project · confidence: high
- Manufacturer name: Siemens Energy — SGT6-5000F Heavy-duty gas turbine (60 Hz) · confidence: high
- Equipment models.0: {"manufacturer_domain":"siemens-energy.com","product_url":"https://www.siemens-energy.com/global/en/home/products-services/product/sgt6-5000f.html","count":5,"unit_mw":195.5,"name":"Siemens 501FD2 / SGT6-5000F heavy-duty gas turbine"} — Rolling Hills Generating seeks permits for Ohio uprate project · confidence: medium
- Quality notes: ["Reported capacity varies by source and rating basis: EIA-derived records report 977.5 MW, Capital Power reports 1,023 MW, and earlier transaction materials reported approximately 835-850 MW. These figures should not be treated as interchangeable without confirming the applicable nameplate, owned-capacity, or filing methodology.","The 2013 combined-cycle conversion was approved for development but was later put on hold in 2017. the disclosed 2025 consideration and financing relate to the combined Hummel and Rolling Hills portfolio transaction."] — Rolling Hills Generating - Capital Power · confidence: medium
- Quality notes: ["Reported capacity varies by source and rating basis: EIA-derived records report 977.5 MW, Capital Power reports 1,023 MW, and earlier transaction materials reported approximately 835-850 MW. These figures should not be treated as interchangeable without confirming the applicable nameplate, owned-capacity, or filing methodology.","The 2013 combined-cycle conversion was approved for development but was later put on hold in 2017. the disclosed 2025 consideration and financing relate to the combined Hummel and Rolling Hills portfolio transaction."] — Rolling Hills Generating Station Receives State Certificate of Environmental Compatibility and Public Need | Tenaska Capital · confidence: medium
- Quality notes: ["Reported capacity varies by source and rating basis: EIA-derived records report 977.5 MW, Capital Power reports 1,023 MW, and earlier transaction materials reported approximately 835-850 MW. These figures should not be treated as interchangeable without confirming the applicable nameplate, owned-capacity, or filing methodology.","The 2013 combined-cycle conversion was approved for development but was later put on hold in 2017. the disclosed 2025 consideration and financing relate to the combined Hummel and Rolling Hills portfolio transaction."] — Capital Power Letterhead - Template · confidence: medium
- Commercial parties: [{"relationship":"Legal plant owner","name":"Rolling Hills Generating, LLC","detail":"Owns the Rolling Hills Generating facility and is the named plant entity in the FERC asset appendix and Capital Power's operating materials.","official_url":"https://www.capitalpower.com/operations/rolling-hills-generating/"},{"relationship":"Parent owner and operator","name":"Capital Power Corporation","detail":"Acquired 100% of Rolling Hills Generating, LLC in June 2025 and lists the facility as 100% owned and operated.","official_url":"https://www.capitalpower.com/"},{"relationship":"Former owner and seller","name":"LS Power Equity Advisors, LLC","detail":"Owned Rolling Hills after closing its September 2022 acquisition from an ArcLight affiliate and sold the facility to Capital Power in 2025.","official_url":"https://www.lspower.com/"},{"relationship":"Earlier owner and seller affiliate","name":"ArcLight Capital Partners, LLC","detail":"Controlled Eastern Generation, which acquired Rolling Hills in December 2015 as part of a seven-plant portfolio purchased from Tenaska affiliates; an ArcLight affiliate later sold the facility to LS Power.","official_url":"https://www.arclight.com/"},{"relationship":"Predecessor owner and investment manager","name":"Tenaska Capital Management, LLC","detail":"Managed Rolling Hills as a private-equity investment from 2008 and sold it as part of the portfolio acquired by ArcLight-controlled Eastern Generation in 2015.","official_url":"https://tenaskacapital.com/"},{"relationship":"Combustion-turbine and generator OEM","name":"Siemens","detail":"Supplied the five combustion turbines and associated generators; Capital Power identifies the equipment as Siemens combustion turbines covered by a long-term program contract.","official_url":"https://www.siemens-energy.com/"},{"relationship":"Market and balancing-area counterparty","name":"PJM Interconnection","detail":"Rolling Hills provides capacity and energy into PJM and is identified in FERC materials as a PJM asset.","official_url":"https://www.pjm.com/"},{"relationship":"Interconnecting utility and transmission counterparty","name":"American Electric Power / AEP Ohio","detail":"Capital Power identifies American Electric Power as the recipient of Rolling Hills capacity and energy; acquisition materials identify AEP Ohio's Flatlick 765 kV system as the interconnection.","official_url":"https://www.aepohio.com/"}] — Rolling Hills Generating - Capital Power · confidence: medium
- Commercial parties: [{"relationship":"Legal plant owner","name":"Rolling Hills Generating, LLC","detail":"Owns the Rolling Hills Generating facility and is the named plant entity in the FERC asset appendix and Capital Power's operating materials.","official_url":"https://www.capitalpower.com/operations/rolling-hills-generating/"},{"relationship":"Parent owner and operator","name":"Capital Power Corporation","detail":"Acquired 100% of Rolling Hills Generating, LLC in June 2025 and lists the facility as 100% owned and operated.","official_url":"https://www.capitalpower.com/"},{"relationship":"Former owner and seller","name":"LS Power Equity Advisors, LLC","detail":"Owned Rolling Hills after closing its September 2022 acquisition from an ArcLight affiliate and sold the facility to Capital Power in 2025.","official_url":"https://www.lspower.com/"},{"relationship":"Earlier owner and seller affiliate","name":"ArcLight Capital Partners, LLC","detail":"Controlled Eastern Generation, which acquired Rolling Hills in December 2015 as part of a seven-plant portfolio purchased from Tenaska affiliates; an ArcLight affiliate later sold the facility to LS Power.","official_url":"https://www.arclight.com/"},{"relationship":"Predecessor owner and investment manager","name":"Tenaska Capital Management, LLC","detail":"Managed Rolling Hills as a private-equity investment from 2008 and sold it as part of the portfolio acquired by ArcLight-controlled Eastern Generation in 2015.","official_url":"https://tenaskacapital.com/"},{"relationship":"Combustion-turbine and generator OEM","name":"Siemens","detail":"Supplied the five combustion turbines and associated generators; Capital Power identifies the equipment as Siemens combustion turbines covered by a long-term program contract.","official_url":"https://www.siemens-energy.com/"},{"relationship":"Market and balancing-area counterparty","name":"PJM Interconnection","detail":"Rolling Hills provides capacity and energy into PJM and is identified in FERC materials as a PJM asset.","official_url":"https://www.pjm.com/"},{"relationship":"Interconnecting utility and transmission counterparty","name":"American Electric Power / AEP Ohio","detail":"Capital Power identifies American Electric Power as the recipient of Rolling Hills capacity and energy; acquisition materials identify AEP Ohio's Flatlick 765 kV system as the interconnection.","official_url":"https://www.aepohio.com/"}] — LS Power Completes Acquisition of Rolling Hills Natural Gas Power Plant in Ohio - LS Power · confidence: medium
- Commercial parties: [{"relationship":"Legal plant owner","name":"Rolling Hills Generating, LLC","detail":"Owns the Rolling Hills Generating facility and is the named plant entity in the FERC asset appendix and Capital Power's operating materials.","official_url":"https://www.capitalpower.com/operations/rolling-hills-generating/"},{"relationship":"Parent owner and operator","name":"Capital Power Corporation","detail":"Acquired 100% of Rolling Hills Generating, LLC in June 2025 and lists the facility as 100% owned and operated.","official_url":"https://www.capitalpower.com/"},{"relationship":"Former owner and seller","name":"LS Power Equity Advisors, LLC","detail":"Owned Rolling Hills after closing its September 2022 acquisition from an ArcLight affiliate and sold the facility to Capital Power in 2025.","official_url":"https://www.lspower.com/"},{"relationship":"Earlier owner and seller affiliate","name":"ArcLight Capital Partners, LLC","detail":"Controlled Eastern Generation, which acquired Rolling Hills in December 2015 as part of a seven-plant portfolio purchased from Tenaska affiliates; an ArcLight affiliate later sold the facility to LS Power.","official_url":"https://www.arclight.com/"},{"relationship":"Predecessor owner and investment manager","name":"Tenaska Capital Management, LLC","detail":"Managed Rolling Hills as a private-equity investment from 2008 and sold it as part of the portfolio acquired by ArcLight-controlled Eastern Generation in 2015.","official_url":"https://tenaskacapital.com/"},{"relationship":"Combustion-turbine and generator OEM","name":"Siemens","detail":"Supplied the five combustion turbines and associated generators; Capital Power identifies the equipment as Siemens combustion turbines covered by a long-term program contract.","official_url":"https://www.siemens-energy.com/"},{"relationship":"Market and balancing-area counterparty","name":"PJM Interconnection","detail":"Rolling Hills provides capacity and energy into PJM and is identified in FERC materials as a PJM asset.","official_url":"https://www.pjm.com/"},{"relationship":"Interconnecting utility and transmission counterparty","name":"American Electric Power / AEP Ohio","detail":"Capital Power identifies American Electric Power as the recipient of Rolling Hills capacity and energy; acquisition materials identify AEP Ohio's Flatlick 765 kV system as the interconnection.","official_url":"https://www.aepohio.com/"}] — Rolling Hills Generating Station Receives State Certificate of Environmental Compatibility and Public Need | Tenaska Capital · confidence: medium
- Timeline.0: {"event":"Commercial operation and plant completion","date":"2003-03-01","detail":"Ohio Power Siting Board records list the Rolling Hills Generating Plant as operational from March 1, 2003; Tenaska later described the plant as completed and operating since 2003."} — Source · confidence: medium
- Timeline.0: {"event":"Commercial operation and plant completion","date":"2003-03-01","detail":"Ohio Power Siting Board records list the Rolling Hills Generating Plant as operational from March 1, 2003; Tenaska later described the plant as completed and operating since 2003."} — Rolling Hills Generating Station Receives State Certificate of Environmental Compatibility and Public Need | Tenaska Capital · confidence: medium
- Timeline.1: {"event":"Tenaska predecessor ownership","date":"2008","detail":"Tenaska Capital Management reported that Rolling Hills had been a private-equity investment managed by Tenaska since 2008."} — Rolling Hills Generating Station Receives State Certificate of Environmental Compatibility and Public Need | Tenaska Capital · confidence: medium
- Timeline.2: {"event":"Combined-cycle conversion certificate","date":"2013-05-01","detail":"The Ohio Power Siting Board issued a Certificate of Environmental Compatibility and Public Need for a proposed conversion from an approximately 850 MW peaker to a 1,414 MW combined-cycle/peaking facility. The proposal would have converted four of the five units while retaining 20% of peaking capacity; construction and operation were prospective, not evidence of completion."} — Rolling Hills Generating Station Receives State Certificate of Environmental Compatibility and Public Need | Tenaska Capital · confidence: high
- Timeline.5: {"event":"LS Power acquisition from ArcLight affiliate","date":"2022-09-16","detail":"LS Power announced the acquisition agreement in June 2022 and closed the transaction on September 16, 2022, acquiring the 835 MW five-unit simple-cycle peaking facility from an ArcLight Capital Partners affiliate. The sale price was not disclosed."} — LS Power to Acquire Natural Gas Power Plant From ArcLight Capital Partners · confidence: high
- Timeline.5: {"event":"LS Power acquisition from ArcLight affiliate","date":"2022-09-16","detail":"LS Power announced the acquisition agreement in June 2022 and closed the transaction on September 16, 2022, acquiring the 835 MW five-unit simple-cycle peaking facility from an ArcLight Capital Partners affiliate. The sale price was not disclosed."} — LS Power Completes Acquisition of Rolling Hills Natural Gas Power Plant in Ohio - LS Power · confidence: high
- Timeline.6: {"event":"Capital Power acquisition announcement and proposed upgrade","date":"2025-04-14","detail":"Capital Power announced an agreement to acquire 100% of the equity interests in Rolling Hills Generating, LLC from LS Power Equity Advisors as part of a combined Hummel/Rolling Hills transaction. The same acquisition presentation identified a planned 30 MW Siemens-based upgrade and potential additional capacity, without establishing completion."} — Capital Power Announces Strategic Acquisition of Two Flexible Generation Assets in PJM and a $500 Million Offering of Common Shares - Capital Power · confidence: medium
- Timeline.6: {"event":"Capital Power acquisition announcement and proposed upgrade","date":"2025-04-14","detail":"Capital Power announced an agreement to acquire 100% of the equity interests in Rolling Hills Generating, LLC from LS Power Equity Advisors as part of a combined Hummel/Rolling Hills transaction. The same acquisition presentation identified a planned 30 MW Siemens-based upgrade and potential additional capacity, without establishing completion."} — Capital Power Letterhead - Template · confidence: medium
- Timeline.8: {"event":"Capital Power senior-notes financing","date":"2025-05-28","detail":"Capital Power completed a private offering of US$1.2 billion aggregate principal amount of senior notes through Capital Power (US Holdings) Inc.; the notes were guaranteed by Capital Power and relevant subsidiaries."} — Capital Power completes acquisition of the Hummel and Rolling Hills facilities in PJM for US$2.2 billion (CAD ~$3.01 billion) - Capital Power · confidence: high
- Commercial parties.0: {"relationship":"Legal plant owner","name":"Rolling Hills Generating, LLC","detail":"Owns the Rolling Hills Generating facility and is the named plant entity in the FERC asset appendix and Capital Power's operating materials.","official_url":"https://www.capitalpower.com/operations/rolling-hills-generating/"} — Rolling Hills Generating - Capital Power · confidence: high
- Commercial parties.1: {"relationship":"Parent owner and operator","name":"Capital Power Corporation","detail":"Acquired 100% of Rolling Hills Generating, LLC in June 2025 and lists the facility as 100% owned and operated.","official_url":"https://www.capitalpower.com/"} — Rolling Hills Generating - Capital Power · confidence: high
- Commercial parties.2: {"relationship":"Former owner and seller","name":"LS Power Equity Advisors, LLC","detail":"Owned Rolling Hills after closing its September 2022 acquisition from an ArcLight affiliate and sold the facility to Capital Power in 2025.","official_url":"https://www.lspower.com/"} — Rolling Hills Generating - Capital Power · confidence: medium
- Commercial parties.2: {"relationship":"Former owner and seller","name":"LS Power Equity Advisors, LLC","detail":"Owned Rolling Hills after closing its September 2022 acquisition from an ArcLight affiliate and sold the facility to Capital Power in 2025.","official_url":"https://www.lspower.com/"} — Capital Power completes acquisition of the Hummel and Rolling Hills facilities in PJM for US$2.2 billion (CAD ~$3.01 billion) - Capital Power · confidence: medium
- Commercial parties.3: {"relationship":"Earlier owner and seller affiliate","name":"ArcLight Capital Partners, LLC","detail":"Controlled Eastern Generation, which acquired Rolling Hills in December 2015 as part of a seven-plant portfolio purchased from Tenaska affiliates; an ArcLight affiliate later sold the facility to LS Power.","official_url":"https://www.arclight.com/"} — LS Power Completes Acquisition of Rolling Hills Natural Gas Power Plant in Ohio - LS Power · confidence: medium
- Commercial parties.4: {"relationship":"Predecessor owner and investment manager","name":"Tenaska Capital Management, LLC","detail":"Managed Rolling Hills as a private-equity investment from 2008 and sold it as part of the portfolio acquired by ArcLight-controlled Eastern Generation in 2015.","official_url":"https://tenaskacapital.com/"} — Rolling Hills Generating Station Receives State Certificate of Environmental Compatibility and Public Need | Tenaska Capital · confidence: medium
- Commercial parties.5: {"relationship":"Combustion-turbine and generator OEM","name":"Siemens","detail":"Supplied the five combustion turbines and associated generators; Capital Power identifies the equipment as Siemens combustion turbines covered by a long-term program contract.","official_url":"https://www.siemens-energy.com/"} — Rolling Hills Generating - Capital Power · confidence: high
- Commercial parties.6: {"relationship":"Market and balancing-area counterparty","name":"PJM Interconnection","detail":"Rolling Hills provides capacity and energy into PJM and is identified in FERC materials as a PJM asset.","official_url":"https://www.pjm.com/"} — Rolling Hills Generating - Capital Power · confidence: high
- Commercial parties.6: {"relationship":"Market and balancing-area counterparty","name":"PJM Interconnection","detail":"Rolling Hills provides capacity and energy into PJM and is identified in FERC materials as a PJM asset.","official_url":"https://www.pjm.com/"} — Asset Appendix Report - MBR Portal · confidence: high

## Timeline

- 2003-06 — Commercial operation
  Rolling Hills Generating entered commercial operation.
  Source: Rolling Hills Generating Station Receives State Certificate of Environmental Compatibility and Public Need | Tenaska Capital (https://tenaskacapital.com/rolling-hills-generating-station-receives-state-certificate-of-environmental-compatibility-and-public-need/)
- 2013-05-01 — Combined-cycle conversion certificate
  The Ohio Power Siting Board issued a Certificate of Environmental Compatibility and Public Need for a proposed conversion from an approximately 850 MW peaker to a 1,414 MW combined-cycle/peaking facility. The proposal would have converted four of the five units while retaining 20% of peaking capacity; construction and operation were prospective, not evidence of completion.
  Source: Rolling Hills Generating Station Receives State Certificate of Environmental Compatibility and Public Need | Tenaska Capital (https://tenaskacapital.com/rolling-hills-generating-station-receives-state-certificate-of-environmental-compatibility-and-public-need/)
- 2022-09-16 — LS Power acquisition from ArcLight affiliate
  LS Power announced the acquisition agreement in June 2022 and closed the transaction on September 16, 2022, acquiring the 835 MW five-unit simple-cycle peaking facility from an ArcLight Capital Partners affiliate. The sale price was not disclosed.
  Source: LS Power Completes Acquisition of Rolling Hills Natural Gas Power Plant in Ohio - LS Power (https://www.lspower.com/news/ls-power-acquires-rolling-hills-natural-gas-power-plant-in-ohio/)
- 2025-05-28 — Capital Power senior-notes financing
  Capital Power completed a private offering of US$1.2 billion aggregate principal amount of senior notes through Capital Power (US Holdings) Inc.; the notes were guaranteed by Capital Power and relevant subsidiaries.
  Source: Capital Power completes acquisition of the Hummel and Rolling Hills facilities in PJM for US$2.2 billion (CAD ~$3.01 billion) - Capital Power (https://www.capitalpower.com/media/media_releases/capital-power-completes-acquisition-of-the-hummel-and-rolling-hills-facilities-in-pjm/)
- 2025-06 — Acquisition closed
  Capital Power completed acquisition of 100% equity interests in Rolling Hills Generating, LLC from LS Power Equity Advisors, LLC. Disclosed US$2.2 billion net purchase price was for combined Hummel and Rolling Hills acquisition and was not allocated to Rolling Hills individually.
  Source: Capital Power completes acquisition of the Hummel and Rolling Hills facilities in PJM for US$2.2 billion (CAD ~$3.01 billion) - Capital Power (https://www.capitalpower.com/media/media_releases/capital-power-completes-acquisition-of-the-hummel-and-rolling-hills-facilities-in-pjm/)

## Sources

- [Rolling Hills Generating - Capital Power](https://www.capitalpower.com/operations/rolling-hills-generating/) — capitalpower.com · tier other
- [MBR | Asset Appendix Report](https://mbrweb.ferc.gov/SearchMBRAssetAppendix/AssetAppendixDetails?AssetAppendixId=10349) — mbrweb.ferc.gov · tier regulatory
- [Capital Power completes acquisition of the Hummel and Rolling Hills facilities in PJM for US$2.2 billion (CAD ~$3.01 billion) - Capital Power](https://www.capitalpower.com/media/media_releases/capital-power-completes-acquisition-of-the-hummel-and-rolling-hills-facilities-in-pjm/) — capitalpower.com · tier other
- [LS Power Completes Acquisition of Rolling Hills Natural Gas Power Plant in Ohio - LS Power](https://www.lspower.com/news/ls-power-acquires-rolling-hills-natural-gas-power-plant-in-ohio/) — lspower.com · tier other
- [Capital Power Letterhead - Template](https://www.capitalpower.com/wp-content/uploads/2025/05/Capital-Power-Acquisitions-of-Hummel-and-Rolling-Hill-Generating-Stations-Presentation-April-2025-Transcript.pdf) — capitalpower.com · tier other
- [Rolling Hills Generating seeks permits for Ohio uprate project](https://www.power-eng.com/operations-maintenance/rolling-hills-generating-seeks-permits-for-ohio-uprate-project/) — power-eng.com · tier other
- [Rolling Hills Generating Station Receives State Certificate of Environmental Compatibility and Public Need | Tenaska Capital](https://tenaskacapital.com/rolling-hills-generating-station-receives-state-certificate-of-environmental-compatibility-and-public-need/) — tenaskacapital.com · tier other
- [SGT6-5000F Heavy-duty gas turbine (60 Hz)](https://www.siemens-energy.com/global/en/home/products-services/product/sgt6-5000f.html) — siemens-energy.com · tier other
- [Source](https://dam.assets.ohio.gov/image/upload/puco.ohio.gov/empliibrary/files/OPA/Mapping/OPSB/Solar%20Facilities%20Map/Natural_Gas_Map_and_Stats.pdf) — dam.assets.ohio.gov · tier regulatory
- [ArcLight Capital Partners Announces Completion of Eastern Generation's Acquisition of a Power Asset Portfolio from Tenaska](https://www.prnewswire.com/news-releases/arclight-capital-partners-announces-completion-of-eastern-generations-acquisition-of-a-power-asset-portfolio-from-tenaska-300196879.html) — prnewswire.com · tier other
- [Capital Power Announces Strategic Acquisition of Two Flexible Generation Assets in PJM and a $500 Million Offering of Common Shares - Capital Power](https://www.capitalpower.com/media/media_releases/capital-power-announces-strategic-acquisition-of-two-flexible-generation-assets-in-pjm-and-a-500-million-offering-of-common-shares/) — capitalpower.com · tier other
- [LS Power to Acquire Natural Gas Power Plant From ArcLight Capital Partners](https://www.prnewswire.com/news-releases/ls-power-to-acquire-natural-gas-power-plant-from-arclight-capital-partners-301574176.html) — prnewswire.com · tier other
- [Source](https://capitalpower.com/media/media_releases/capital-power-completes-acquisition-of-the-hummel-and-rolling-hills-facilities-in-pjm) — capitalpower.com · tier other
- [Source](https://lspower.com/news/ls-power-acquires-rolling-hills-natural-gas-power-plant-in-ohio) — lspower.com · tier other
- [Source](https://capitalpower.com/operations/rolling-hills-generating) — capitalpower.com · tier other
- [Grain Belt Express Exhibit 9.3 Page 1 of 25](https://icc.illinois.gov/docket/P2015-0277/documents/227787/files/402203.pdf) — icc.illinois.gov · tier regulatory
- [Source](https://www.pjm.com/-/media/DotCom/committees-groups/committees/teac/2026/20260602/20260602-item-06---aep-supplemental-projects.pdf) — pjm.com · tier other

## Data quality

- Reported capacity varies by source and rating basis: EIA-derived records report 977.5 MW, Capital Power reports 1,023 MW, and earlier transaction materials reported approximately 835-850 MW. These figures should not be treated as interchangeable without confirming the applicable nameplate, owned-capacity, or filing methodology. The 2013 combined-cycle conversion was approved for development but was later put on hold in 2017. the disclosed 2025 consideration and financing relate to the combined Hummel and Rolling Hills portfolio transaction.

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