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.
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
Primary generation technology.
Indiana Michigan Power Co · Spencer County · PJM
Rockport is currently operating; a closure or retirement is listed for December 31, 2028.
765 kV · American Electric Power (AEP) transmission system
Conventional Steam Coal
Rockport is currently operating; a closure or retirement is listed for December 31, 2028.
Rockport is currently operating; a closure or retirement is listed for December 31, 2028.
765 kV · American Electric Power (AEP) transmission system
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 1,300 MW 1,300 MW summer | Conventional Steam Coal Subbituminous Coal · ST | Dec 1984 Retirement: Dec 2028 | Operating |
| 2 | 1,300 MW 1,300 MW summer | Conventional Steam Coal Subbituminous Coal · ST | Dec 1989 Retirement: Dec 2028 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
Groundbreaking took place on August 29, 1977; the first concrete was poured on April 27, 1978.
PJM
PJM · Spencer County
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
| Largest reported plants | Capacity | State | |
|---|---|---|---|
| RockportCurrent | 2,600 MW | IN | |
| Donald C Cook | 2,285.3 MW | MI | |
| St. Joseph Solar | 20 MW | IN | |
| Berrien Springs | 7.2 MW | MI | |
| OlivePV | 5 MW | IN | |
| Twin Branch | 4.8 MW | IN | |
| Watervliet PV | 4.6 MW | MI | |
| Buchanan (MI) | 4.4 MW | MI |
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
View full reporting portfolioEIA-860 lists generator 1 with this operating date.
EIA-860 lists generator 2 with this operating date.
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.
EIA-860 lists a planned retirement for generator 1, generator 2.
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.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Rockport has a reported capacity of 2,600 MW. Source: EIA Form 860.
Rockport is a Conventional Steam Coal facility in Spencer County, IN, participating in the PJM market.
Rockport is in Spencer County, IN, inside the PJM balancing area.
Rockport is operated by Indiana Michigan Power Co according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Rockport reported 9,221.7 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
Rockport interconnects at Rockport Station, on the American Electric Power (AEP) transmission system system.
By capacity, Rockport ranks #8 of 206 operating plants of the same technology nationally. It ranks #2 of 11 in IN.
