# Rockport

PJM Conventional Steam Coal · https://askthegrid.com/assets/facilities/rockport

Rockport is a coal-fired power facility with 2,600 MW of EIA-reported operating capacity in Spencer County, Indiana, registered as EIA Plant ID 6166. Indiana Michigan Power Company owns and operates the plant.

## Key facts

- Technology: Conventional Steam Coal
- Power capacity: 2600 MW
- Operating status: operating

## Grid and market context

- ISO/RTO: PJM
- Balancing authority: PJM Interconnection, LLC
- Substation: Rockport Station
- Point of interconnection: Rockport Station
- Transmission owner: American Electric Power (AEP) transmission system
- Interconnection voltage: 765 kV

## Source-backed facts

- Owner logo domain: aep.com — AEP Generating Company · confidence: medium
- Identifiers: [{"value":"6166","system":"EIA Plant ID"},{"value":"9324","system":"EIA Entity ID"},{"value":"1","system":"EIA Generator ID"},{"value":"2","system":"EIA Generator ID"},{"value":"PJM","system":"ISO/RTO"},{"value":"147-47416-00020","system":"IDEM Part 70 Operating Permit"}] — Source · confidence: medium
- Identifiers: [{"value":"6166","system":"EIA Plant ID"},{"value":"9324","system":"EIA Entity ID"},{"value":"1","system":"EIA Generator ID"},{"value":"2","system":"EIA Generator ID"},{"value":"PJM","system":"ISO/RTO"},{"value":"147-47416-00020","system":"IDEM Part 70 Operating Permit"}] — Source · confidence: medium
- Official project url: https://www.indianamichiganpower.com/community/caring/view?id=9850 — I&M’s Rockport Plant Celebrates 40th Anniversary · confidence: high
- Owner name: Indiana Michigan Power Company and AEP Generating Company (50% ownership each) — Source · confidence: medium
- Description: Rockport is a coal-fired electric generating plant in Spencer County, Indiana, at 2791 N. U.S. Highway 231, Rockport, Indiana 47635. EIA identifies the facility as plant 6166 under Indiana Michigan Power Co., entity 9324, with generator IDs 1 and 2; each generator is listed as a 1,300 MW conventional steam coal unit. Unit 1 became operational on December 10, 1984, and Unit 2 began operation in 1989. Indiana Michigan Power operates both units, which are jointly owned by Indiana Michigan Power and AEP Generating Company. — I&M’s Rockport Plant Celebrates 40th Anniversary · confidence: medium
- Description: Rockport is a coal-fired electric generating plant in Spencer County, Indiana, at 2791 N. U.S. Highway 231, Rockport, Indiana 47635. EIA identifies the facility as plant 6166 under Indiana Michigan Power Co., entity 9324, with generator IDs 1 and 2; each generator is listed as a 1,300 MW conventional steam coal unit. Unit 1 became operational on December 10, 1984, and Unit 2 began operation in 1989. Indiana Michigan Power operates both units, which are jointly owned by Indiana Michigan Power and AEP Generating Company. — Source · confidence: medium
- Description: Rockport is a coal-fired electric generating plant in Spencer County, Indiana, at 2791 N. U.S. Highway 231, Rockport, Indiana 47635. EIA identifies the facility as plant 6166 under Indiana Michigan Power Co., entity 9324, with generator IDs 1 and 2; each generator is listed as a 1,300 MW conventional steam coal unit. Unit 1 became operational on December 10, 1984, and Unit 2 began operation in 1989. Indiana Michigan Power operates both units, which are jointly owned by Indiana Michigan Power and AEP Generating Company. — Source · confidence: medium
- Identifiers.4: {"value":"PJM","system":"ISO/RTO"} — Source · confidence: medium
- Identifiers.5: {"value":"147-47416-00020","system":"IDEM Part 70 Operating Permit"} — Source · confidence: high
- Parties.0: {"relationship":"Co-owner; 50% ownership share","name":"Indiana Michigan Power Company","official_url":"https://www.indianamichiganpower.com/"} — Source · confidence: high
- Parties.0: {"relationship":"Co-owner; 50% ownership share","name":"Indiana Michigan Power Company","official_url":"https://www.indianamichiganpower.com/"} — Indiana Michigan Power · confidence: high
- Parties.1: {"relationship":"Co-owner; 50% ownership share","name":"AEP Generating Company","official_url":"https://www.aep.com/investors/financial/genco/"} — Source · confidence: high
- Parties.1: {"relationship":"Co-owner; 50% ownership share","name":"AEP Generating Company","official_url":"https://www.aep.com/investors/financial/genco/"} — AEP Generating Company · confidence: high
- Parties.2: {"relationship":"Operator","name":"Indiana Michigan Power Company","official_url":"https://www.indianamichiganpower.com/"} — Source · confidence: high
- Parties.2: {"relationship":"Operator","name":"Indiana Michigan Power Company","official_url":"https://www.indianamichiganpower.com/"} — I&M’s Rockport Plant Celebrates 40th Anniversary · confidence: high
- Interconnection: AEP transmission system via two 765-kV transmission lines: Rockport–Jefferson and Rockport–Sullivan. — Self excitation conditions at AEP's Rockport Plant during unit maintenance and unit start-up (Conference) | OSTI.GOV · confidence: medium
- Site acres: 4500 — Frequently Asked Questions | Indiana Michigan Power · confidence: medium
- Commercial operation date: 1984-12-10 — I&M’s Rockport Plant Celebrates 40th Anniversary · confidence: medium
- Power mw: 2600 — I&M’s Rockport Plant Celebrates 40th Anniversary · confidence: medium
- Unit count: 2 — Self excitation conditions at AEP's Rockport Plant during unit maintenance and unit start-up (Conference) | OSTI.GOV · confidence: high
- Equipment models: [{"manufacturer_domain":"babcock.com","product_url":"https://www.babcock.com/home/products-services/steam-generators/utility-scale-boilers","count":2,"unit_mw":1300,"name":"Babcock & Wilcox coal-fired steam boiler"},{"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/content/dam/gepower-steam/global/en_US/documents/Steam-Product-Catalog.pdf","count":2,"unit_mw":1300,"name":"GE Power steam turbine"},{"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/content/dam/gepower-steam/global/en_US/documents/Steam-Product-Catalog.pdf","count":2,"unit_mw":1300,"name":"GE Power electric generator"}] — GE Steam Power product catalog · confidence: medium
- Product family: Babcock & Wilcox utility-scale pulverized-coal boiler; GE Power utility steam turbine and electric generator — GE Steam Power product catalog · confidence: medium
- Equipment models.1: {"manufacturer_domain":"gevernova.com","product_url":"https://www.gevernova.com/content/dam/gepower-steam/global/en_US/documents/Steam-Product-Catalog.pdf","count":2,"unit_mw":1300,"name":"GE Power steam turbine"} — GE Steam Power product catalog · confidence: medium
- Description: Rockport is a coal-fired generating plant in Spencer County, Indiana, operated by Indiana Michigan Power Company and connected to the PJM system. The plant has two units: Unit 1 entered commercial operation on December 10, 1984, and Unit 2 entered service in December 1989. Indiana Michigan Power and AEP Generating Company each hold a 50% ownership share; Unit 2 was previously owned by an unaffiliated owner trust and leased to the companies. In April 2021, the two AEP affiliates agreed to reacquire Unit 2 for $115.5 million, completing the purchase at the end of the lease in December 2022. Both coal units are currently planned for retirement by December 31, 2028, while I&M has proposed a separate 1,520-MW natural-gas combined-cycle facility at the site for operation in summer 2030. — Source · confidence: medium
- Description: Rockport is a coal-fired generating plant in Spencer County, Indiana, operated by Indiana Michigan Power Company and connected to the PJM system. The plant has two units: Unit 1 entered commercial operation on December 10, 1984, and Unit 2 entered service in December 1989. Indiana Michigan Power and AEP Generating Company each hold a 50% ownership share; Unit 2 was previously owned by an unaffiliated owner trust and leased to the companies. In April 2021, the two AEP affiliates agreed to reacquire Unit 2 for $115.5 million, completing the purchase at the end of the lease in December 2022. Both coal units are currently planned for retirement by December 31, 2028, while I&M has proposed a separate 1,520-MW natural-gas combined-cycle facility at the site for operation in summer 2030. — I&M Plans for Rockport's Next Chapter as a Full-Fledged Energy Hub to Meet Customers' Needs · confidence: medium
- Quality notes: ["EIA lists each Rockport generator at 1,300 MW, while an AEP Generating Company filing describes the two units as 1,310 MW each; the directory’s 2,600-MW capacity follows the EIA plant record.","The Unit 2 lease expired on December 7, 2022; the reacquisition took place at lease expiration, with ownership and related power-accounting treatment effective from December 8, 2022.","The retirement commitment applies no later than December 31, 2028. I&M’s 2025 notice states that both units are currently planned for retirement but reserves the option of fuel conversion.","The proposed Rockport Energy Center is a future, separate natural-gas project rather than a completed expansion or repowering of the existing coal units."] — Source · confidence: medium
- Quality notes: ["EIA lists each Rockport generator at 1,300 MW, while an AEP Generating Company filing describes the two units as 1,310 MW each; the directory’s 2,600-MW capacity follows the EIA plant record.","The Unit 2 lease expired on December 7, 2022; the reacquisition took place at lease expiration, with ownership and related power-accounting treatment effective from December 8, 2022.","The retirement commitment applies no later than December 31, 2028. I&M’s 2025 notice states that both units are currently planned for retirement but reserves the option of fuel conversion.","The proposed Rockport Energy Center is a future, separate natural-gas project rather than a completed expansion or repowering of the existing coal units."] — Source · confidence: medium
- Quality notes: ["EIA lists each Rockport generator at 1,300 MW, while an AEP Generating Company filing describes the two units as 1,310 MW each; the directory’s 2,600-MW capacity follows the EIA plant record.","The Unit 2 lease expired on December 7, 2022; the reacquisition took place at lease expiration, with ownership and related power-accounting treatment effective from December 8, 2022.","The retirement commitment applies no later than December 31, 2028. I&M’s 2025 notice states that both units are currently planned for retirement but reserves the option of fuel conversion.","The proposed Rockport Energy Center is a future, separate natural-gas project rather than a completed expansion or repowering of the existing coal units."] — I&M Plans for Rockport's Next Chapter as a Full-Fledged Energy Hub to Meet Customers' Needs · confidence: medium
- Timeline: [{"event":"Rockport Plant groundbreaking","date":"1977-08-29","detail":"Groundbreaking took place on August 29, 1977; the first concrete was poured on April 27, 1978."},{"event":"AEP financing affiliate and ownership restructuring","date":"1982","detail":"AEP Generating Company was created to facilitate and reduce the cost of financing generating units within the AEP system. During construction, Indiana Michigan Power transferred 50% of its Unit 2 ownership to the affiliate."},{"event":"Unit 1 commercial operation","date":"1984-12-10","detail":"Rockport Unit 1 entered commercial operation."},{"event":"Unit 2 sale-and-leaseback approved","date":"1989-03-30","detail":"Indiana regulators approved the sale-and-leaseback structure under which I&M and AEP Generating Company sold their undivided Unit 2 interests to an owner trust and leased the unit back for 33 years."},{"event":"Unit 2 commercial operation","date":"1989-12","detail":"Rockport Unit 2 was placed into service in December 1989."},{"event":"Lease non-renewal and retirement planning","date":"2020-11","detail":"AEP announced that the Unit 2 lease would not be renewed at its 2022 expiration; Unit 1 was scheduled for retirement by the end of 2028."},{"event":"Unit 2 reacquisition agreement","date":"2021-04-20","detail":"I&M and AEP Generating Company agreed to acquire 100% of the interests in Unit 2 for $115.5 million from financial institutions holding the unit through trusts established by Wilmington Trust."},{"event":"FERC approval of Unit 2 acquisition","date":"2021-09-09","detail":"FERC approved the acquisition in Docket EC21-97-000."},{"event":"IURC approval and jurisdictional action","date":"2021-12-08","detail":"The Indiana Utility Regulatory Commission approved the settlement and declined jurisdiction over the proposed Unit 2 acquisition under the stated conditions."},{"event":"Unit 2 lease termination and reacquisition","date":"2022-12-07","detail":"The 33-year Unit 2 lease expired and the purchase transaction closed at lease expiration. From December 8, 2022, I&M and AEP Generating Company each held a 50% ownership share in Unit 2."},{"event":"Planned coal-unit retirement","date":"2028-12-31","detail":"I&M has committed to permanent cessation of coal combustion at Rockport Units 1 and 2 by December 31, 2028; both units are currently planned for retirement, subject to a reserved fuel-conversion option."},{"event":"Proposed Rockport Energy Center","date":"2026-07","detail":"I&M proposed a separate 1,520-MW natural-gas combined-cycle facility at the Rockport site, with construction anticipated to begin in 2027 and operation expected in summer 2030."}] — Top Plants: Rockport Power Plant, Rockport, Indiana · confidence: medium
- Timeline: [{"event":"Rockport Plant groundbreaking","date":"1977-08-29","detail":"Groundbreaking took place on August 29, 1977; the first concrete was poured on April 27, 1978."},{"event":"AEP financing affiliate and ownership restructuring","date":"1982","detail":"AEP Generating Company was created to facilitate and reduce the cost of financing generating units within the AEP system. During construction, Indiana Michigan Power transferred 50% of its Unit 2 ownership to the affiliate."},{"event":"Unit 1 commercial operation","date":"1984-12-10","detail":"Rockport Unit 1 entered commercial operation."},{"event":"Unit 2 sale-and-leaseback approved","date":"1989-03-30","detail":"Indiana regulators approved the sale-and-leaseback structure under which I&M and AEP Generating Company sold their undivided Unit 2 interests to an owner trust and leased the unit back for 33 years."},{"event":"Unit 2 commercial operation","date":"1989-12","detail":"Rockport Unit 2 was placed into service in December 1989."},{"event":"Lease non-renewal and retirement planning","date":"2020-11","detail":"AEP announced that the Unit 2 lease would not be renewed at its 2022 expiration; Unit 1 was scheduled for retirement by the end of 2028."},{"event":"Unit 2 reacquisition agreement","date":"2021-04-20","detail":"I&M and AEP Generating Company agreed to acquire 100% of the interests in Unit 2 for $115.5 million from financial institutions holding the unit through trusts established by Wilmington Trust."},{"event":"FERC approval of Unit 2 acquisition","date":"2021-09-09","detail":"FERC approved the acquisition in Docket EC21-97-000."},{"event":"IURC approval and jurisdictional action","date":"2021-12-08","detail":"The Indiana Utility Regulatory Commission approved the settlement and declined jurisdiction over the proposed Unit 2 acquisition under the stated conditions."},{"event":"Unit 2 lease termination and reacquisition","date":"2022-12-07","detail":"The 33-year Unit 2 lease expired and the purchase transaction closed at lease expiration. From December 8, 2022, I&M and AEP Generating Company each held a 50% ownership share in Unit 2."},{"event":"Planned coal-unit retirement","date":"2028-12-31","detail":"I&M has committed to permanent cessation of coal combustion at Rockport Units 1 and 2 by December 31, 2028; both units are currently planned for retirement, subject to a reserved fuel-conversion option."},{"event":"Proposed Rockport Energy Center","date":"2026-07","detail":"I&M proposed a separate 1,520-MW natural-gas combined-cycle facility at the Rockport site, with construction anticipated to begin in 2027 and operation expected in summer 2030."}] — I&M Continues to Diversify Power Generation with Clean, Affordable, Reliable Resources · confidence: medium
- Timeline: [{"event":"Rockport Plant groundbreaking","date":"1977-08-29","detail":"Groundbreaking took place on August 29, 1977; the first concrete was poured on April 27, 1978."},{"event":"AEP financing affiliate and ownership restructuring","date":"1982","detail":"AEP Generating Company was created to facilitate and reduce the cost of financing generating units within the AEP system. During construction, Indiana Michigan Power transferred 50% of its Unit 2 ownership to the affiliate."},{"event":"Unit 1 commercial operation","date":"1984-12-10","detail":"Rockport Unit 1 entered commercial operation."},{"event":"Unit 2 sale-and-leaseback approved","date":"1989-03-30","detail":"Indiana regulators approved the sale-and-leaseback structure under which I&M and AEP Generating Company sold their undivided Unit 2 interests to an owner trust and leased the unit back for 33 years."},{"event":"Unit 2 commercial operation","date":"1989-12","detail":"Rockport Unit 2 was placed into service in December 1989."},{"event":"Lease non-renewal and retirement planning","date":"2020-11","detail":"AEP announced that the Unit 2 lease would not be renewed at its 2022 expiration; Unit 1 was scheduled for retirement by the end of 2028."},{"event":"Unit 2 reacquisition agreement","date":"2021-04-20","detail":"I&M and AEP Generating Company agreed to acquire 100% of the interests in Unit 2 for $115.5 million from financial institutions holding the unit through trusts established by Wilmington Trust."},{"event":"FERC approval of Unit 2 acquisition","date":"2021-09-09","detail":"FERC approved the acquisition in Docket EC21-97-000."},{"event":"IURC approval and jurisdictional action","date":"2021-12-08","detail":"The Indiana Utility Regulatory Commission approved the settlement and declined jurisdiction over the proposed Unit 2 acquisition under the stated conditions."},{"event":"Unit 2 lease termination and reacquisition","date":"2022-12-07","detail":"The 33-year Unit 2 lease expired and the purchase transaction closed at lease expiration. From December 8, 2022, I&M and AEP Generating Company each held a 50% ownership share in Unit 2."},{"event":"Planned coal-unit retirement","date":"2028-12-31","detail":"I&M has committed to permanent cessation of coal combustion at Rockport Units 1 and 2 by December 31, 2028; both units are currently planned for retirement, subject to a reserved fuel-conversion option."},{"event":"Proposed Rockport Energy Center","date":"2026-07","detail":"I&M proposed a separate 1,520-MW natural-gas combined-cycle facility at the Rockport site, with construction anticipated to begin in 2027 and operation expected in summer 2030."}] — Source · confidence: medium
- Timeline: [{"event":"Rockport Plant groundbreaking","date":"1977-08-29","detail":"Groundbreaking took place on August 29, 1977; the first concrete was poured on April 27, 1978."},{"event":"AEP financing affiliate and ownership restructuring","date":"1982","detail":"AEP Generating Company was created to facilitate and reduce the cost of financing generating units within the AEP system. During construction, Indiana Michigan Power transferred 50% of its Unit 2 ownership to the affiliate."},{"event":"Unit 1 commercial operation","date":"1984-12-10","detail":"Rockport Unit 1 entered commercial operation."},{"event":"Unit 2 sale-and-leaseback approved","date":"1989-03-30","detail":"Indiana regulators approved the sale-and-leaseback structure under which I&M and AEP Generating Company sold their undivided Unit 2 interests to an owner trust and leased the unit back for 33 years."},{"event":"Unit 2 commercial operation","date":"1989-12","detail":"Rockport Unit 2 was placed into service in December 1989."},{"event":"Lease non-renewal and retirement planning","date":"2020-11","detail":"AEP announced that the Unit 2 lease would not be renewed at its 2022 expiration; Unit 1 was scheduled for retirement by the end of 2028."},{"event":"Unit 2 reacquisition agreement","date":"2021-04-20","detail":"I&M and AEP Generating Company agreed to acquire 100% of the interests in Unit 2 for $115.5 million from financial institutions holding the unit through trusts established by Wilmington Trust."},{"event":"FERC approval of Unit 2 acquisition","date":"2021-09-09","detail":"FERC approved the acquisition in Docket EC21-97-000."},{"event":"IURC approval and jurisdictional action","date":"2021-12-08","detail":"The Indiana Utility Regulatory Commission approved the settlement and declined jurisdiction over the proposed Unit 2 acquisition under the stated conditions."},{"event":"Unit 2 lease termination and reacquisition","date":"2022-12-07","detail":"The 33-year Unit 2 lease expired and the purchase transaction closed at lease expiration. From December 8, 2022, I&M and AEP Generating Company each held a 50% ownership share in Unit 2."},{"event":"Planned coal-unit retirement","date":"2028-12-31","detail":"I&M has committed to permanent cessation of coal combustion at Rockport Units 1 and 2 by December 31, 2028; both units are currently planned for retirement, subject to a reserved fuel-conversion option."},{"event":"Proposed Rockport Energy Center","date":"2026-07","detail":"I&M proposed a separate 1,520-MW natural-gas combined-cycle facility at the Rockport site, with construction anticipated to begin in 2027 and operation expected in summer 2030."}] — I&M Plans for Rockport's Next Chapter as a Full-Fledged Energy Hub to Meet Customers' Needs · confidence: medium
- Timeline.0: {"event":"Rockport Plant groundbreaking","date":"1977-08-29","detail":"Groundbreaking took place on August 29, 1977; the first concrete was poured on April 27, 1978."} — Top Plants: Rockport Power Plant, Rockport, Indiana · confidence: medium
- Timeline.1: {"event":"AEP financing affiliate and ownership restructuring","date":"1982","detail":"AEP Generating Company was created to facilitate and reduce the cost of financing generating units within the AEP system. During construction, Indiana Michigan Power transferred 50% of its Unit 2 ownership to the affiliate."} — Source · confidence: medium
- Timeline.2: {"event":"Unit 1 commercial operation","date":"1984-12-10","detail":"Rockport Unit 1 entered commercial operation."} — Top Plants: Rockport Power Plant, Rockport, Indiana · confidence: high
- Timeline.4: {"event":"Unit 2 commercial operation","date":"1989-12","detail":"Rockport Unit 2 was placed into service in December 1989."} — Top Plants: Rockport Power Plant, Rockport, Indiana · confidence: high
- Timeline.5: {"event":"Lease non-renewal and retirement planning","date":"2020-11","detail":"AEP announced that the Unit 2 lease would not be renewed at its 2022 expiration; Unit 1 was scheduled for retirement by the end of 2028."} — I&M Continues to Diversify Power Generation with Clean, Affordable, Reliable Resources · confidence: high
- Timeline.6: {"event":"Unit 2 reacquisition agreement","date":"2021-04-20","detail":"I&M and AEP Generating Company agreed to acquire 100% of the interests in Unit 2 for $115.5 million from financial institutions holding the unit through trusts established by Wilmington Trust."} — Source · confidence: high
- Timeline.7: {"event":"FERC approval of Unit 2 acquisition","date":"2021-09-09","detail":"FERC approved the acquisition in Docket EC21-97-000."} — Source · confidence: high
- Timeline.8: {"event":"IURC approval and jurisdictional action","date":"2021-12-08","detail":"The Indiana Utility Regulatory Commission approved the settlement and declined jurisdiction over the proposed Unit 2 acquisition under the stated conditions."} — ORIGINAL · confidence: medium
- Timeline.9: {"event":"Unit 2 lease termination and reacquisition","date":"2022-12-07","detail":"The 33-year Unit 2 lease expired and the purchase transaction closed at lease expiration. From December 8, 2022, I&M and AEP Generating Company each held a 50% ownership share in Unit 2."} — Source · confidence: high
- Timeline.11: {"event":"Proposed Rockport Energy Center","date":"2026-07","detail":"I&M proposed a separate 1,520-MW natural-gas combined-cycle facility at the Rockport site, with construction anticipated to begin in 2027 and operation expected in summer 2030."} — I&M Plans for Rockport's Next Chapter as a Full-Fledged Energy Hub to Meet Customers' Needs · confidence: high
- Quality notes.1: The Unit 2 lease expired on December 7, 2022; the reacquisition took place at lease expiration, with ownership and related power-accounting treatment effective from December 8, 2022. — Source · confidence: high
- Quality notes.2: The retirement commitment applies no later than December 31, 2028. I&M’s 2025 notice states that both units are currently planned for retirement but reserves the option of fuel conversion. — Source · confidence: high
- Quality notes.3: The proposed Rockport Energy Center is a future, separate natural-gas project rather than a completed expansion or repowering of the existing coal units. — I&M Plans for Rockport's Next Chapter as a Full-Fledged Energy Hub to Meet Customers' Needs · confidence: medium
- Commercial parties.0: {"relationship":"Co-owner; operator","name":"Indiana Michigan Power Company","detail":"Owns 50% of the Rockport Plant with AEP Generating Company and operates both coal units.","official_url":"https://www.indianamichiganpower.com/"} — Source · confidence: high
- Commercial parties.1: {"relationship":"Co-owner; wholesale generation affiliate","name":"AEP Generating Company","detail":"Owns the other 50% share of the Rockport Plant and sells its generation and capacity to Indiana Michigan Power under FERC-approved arrangements.","official_url":"https://www.aep.com/investors/financial/genco/"} — Source · confidence: high
- Commercial parties.4: {"relationship":"Unit 2 sellers in 2022","name":"Unaffiliated financial institutions and owner participants","detail":"Six unaffiliated equity participants and institutional debt investors capitalized the Unit 2 owner trust. Their individual names were not disclosed in the cited records; the interests were acquired through trusts established by Wilmington Trust.","official_url":null} — Source · confidence: medium
- Acquisition detail: In December 2022, at the expiration of the lease, AEP Generating Company and Indiana Michigan Power Company purchased 100% of the ownership interests in Rockport Plant Unit 2, with each acquiring a 50% ownership share. The transaction concerns Unit 2, not the entire Rockport Plant. — Source · confidence: high
- Acquisition date: 2022-12 — Source · confidence: high

## Timeline

- 1977-08-29 — Rockport Plant groundbreaking
  Groundbreaking took place on August 29, 1977; the first concrete was poured on April 27, 1978.
  Source: Top Plants: Rockport Power Plant, Rockport, Indiana (https://www.powermag.com/top-plants-rockport-power-plant-rockport-indiana/)
- 2026-07 — Proposed Rockport Energy Center
  I&M proposed a separate 1,520-MW natural-gas combined-cycle facility at the Rockport site, with construction anticipated to begin in 2027 and operation expected in summer 2030.
  Source: I&M Plans for Rockport's Next Chapter as a Full-Fledged Energy Hub to Meet Customers' Needs (https://www.aep.com/news/stories/view/12100/)
- 2028-12-31 — Planned coal-unit retirement
  I&M has committed to permanent cessation of coal combustion at Rockport Units 1 and 2 by December 31, 2028; both units are currently planned for retirement, subject to a reserved fuel-conversion option.
  Source: Source (https://docs.aep.com/docs/requiredpostings/elg/ROCK-Notice%20of%20Planned%20Participation%20for%20Units%20Achieving%20Permanent%20Cessation%20of%20Coal%20Combustion%20by%2012-31-2034-12182025.pdf)

## Sources

- [AEP Generating Company](https://www.aep.com/investors/financial/genco/) — aep.com · tier other
- [Electric Power Monthly - U.S. Energy Information Administration (EIA)](https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_6_06) — eia.gov · tier regulatory
- [Source](https://www.in.gov/iurc/files/ord_45546_120821.pdf) — in.gov · tier regulatory
- [Source](https://permits.air.idem.in.gov/47416f.pdf) — permits.air.idem.in.gov · tier regulatory
- [I&M’s Rockport Plant Celebrates 40th Anniversary](https://www.indianamichiganpower.com/community/caring/view?id=9850) — indianamichiganpower.com · tier other
- [Source](https://docs.aep.com/docs/investors/Filings/docs/2023subsidiaries/4Q23-AEG.pdf) — docs.aep.com · tier other
- [Indiana Michigan Power](https://www.indianamichiganpower.com/) — indianamichiganpower.com · tier other
- [Self excitation conditions at AEP's Rockport Plant during unit maintenance and unit start-up (Conference) | OSTI.GOV](https://www.osti.gov/biblio/7081110) — osti.gov · tier regulatory
- [Frequently Asked Questions | Indiana Michigan Power](https://indianamichiganpowersmr.com/faqs) — indianamichiganpowersmr.com · tier other
- [Unit 2 SCR Project | BMWC Constructors](https://www.bmwc.com/what-we-do/featured-projects/rockport-unit-2-scr-project/) — bmwc.com · tier other
- [Power plant profile: Rockport Power Plant, US](https://www.power-technology.com/data-insights/power-plant-profile-rockport-power-plant-us/) — power-technology.com · tier other
- [Large-Scale Utility Boiler Manufacturer » Babcock & Wilcox](https://www.babcock.com/home/products-services/steam-generators/utility-scale-boilers) — babcock.com · tier other
- [GE Steam Power product catalog](https://www.gevernova.com/content/dam/gepower-steam/global/en_US/documents/Steam-Product-Catalog.pdf) — gevernova.com · tier other
- [Source](https://permits.air.idem.in.gov/38415d.pdf) — permits.air.idem.in.gov · tier regulatory
- [Top Plants: Rockport Power Plant, Rockport, Indiana](https://www.powermag.com/top-plants-rockport-power-plant-rockport-indiana/) — powermag.com · tier other
- [Source](https://docs.aep.com/docs/requiredpostings/elg/ROCK-Notice%20of%20Planned%20Participation%20for%20Units%20Achieving%20Permanent%20Cessation%20of%20Coal%20Combustion%20by%2012-31-2034-12182025.pdf) — docs.aep.com · tier other
- [I&M Plans for Rockport's Next Chapter as a Full-Fledged Energy Hub to Meet Customers' Needs](https://www.aep.com/news/stories/view/12100/) — aep.com · tier other
- [Source](https://docs.aep.com/docs/investors/Filings/docs/2021subsidiaries/2Q21-AEG.pdf) — docs.aep.com · tier other
- [I&M Continues to Diversify Power Generation with Clean, Affordable, Reliable Resources](https://www.indianamichiganpower.com/company/news/view?releaseID=5845) — indianamichiganpower.com · tier other
- [Indiana attorney general files motion to stop scheduled ...](https://www.21alivenews.com/2026/08/01/indiana-attorney-general-files-motion-stop-scheduled-closure-rockport-coal-plant/) — 21alivenews.com · tier other

## Data quality

- EIA lists each Rockport generator at 1,300 MW, while an AEP Generating Company filing describes the two units as 1,310 MW each; the directory’s 2,600-MW capacity follows the EIA plant record. The retirement commitment applies no later than December 31, 2028. I&M’s 2025 notice states that both units are currently planned for retirement but reserves the option of fuel conversion. The proposed Rockport Energy Center is a future, separate natural-gas project rather than a completed expansion or repowering of the existing coal units.

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