Rockport — Plant Summary
- EIA Plant ID
- 6166
- Capacity
- 2600 MW
- Primary Fuel
- Coal
- Technology
- Conventional Steam Coal
- Status
- Operating
- Location
- Spencer, IN
- Operating Since
- 1984
- Generators
- 2
- Operator
- Indiana Michigan Power Co
- Parent Company
- Commercial Development Company
- Annual Generation
- 9,635,223 MWh
- Capacity Factor
- 42.1%
- Balancing Authority
- PJM Interconnection, LLC
- ISO/RTO
- PJM
- NERC Region
- RFC
Rockport
OperatingSub. Coal
Ranked #1 of 2 Sub. Coal plants in IN#5 of 103 nationally
2600 MW Sub. Coal operating in Spencer, IN — PJM Interconnection, LLC
EIAGEMWD
2,600 MW
Nameplate Capacity
2
Generators
units
Conventional Steam Coal
Technology
1984
Operating Since
Location
Coordinates
37.9256, -87.0372
County
Spencer, IN
Nearby Plants
- Rustic Hills Solar ISolar100 MW · 24.1 km
- Troy SolarSolar50.4 MW · 24.5 km
- F B CulleyBit. Coal368.9 MW · 25.5 km
Ownership & Operator
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Indiana Michigan Power Co | Indiana Michigan Power | — |
| Owner(s) | Indiana Michigan Power Co | Commercial Development Company | American Electric Power |
| Status | Operating | — | — |
Ownership Chain
About
Rockport Generating Station is a coal-fired power plant located along the Ohio River in Ohio Township, Spencer County, Indiana, in the United States, near Rockport. The power plant is located along U.S. Route 231, approximately one mile (1.6 km) north of the William H. Natcher Bridge, spanning the Ohio River. It is operated by Indiana Michigan Power, a subsidiary of American Electric Power.
Read more on WikipediaThe Rockport power plant, located in Spencer County, Indiana, has a total capacity of 2600 MW. The plant began operating in 1984 and utilizes subbituminous coal (SUB) as its primary fuel, employing conventional steam coal technology. It consists of two generators. Indiana Michigan Power Co is the listed operator per EIA data, while the parent company is Commercial Development Company. Rockport is connected to the PJM Interconnection, LLC balancing authority and resides within the RFC NERC region.
Rockport ranks as the largest of two coal plants in Indiana and third largest of 75 coal plants nationally. The plant's latest annual generation was 9,635,223 MWh, achieving a capacity factor of 42.1%. Financial data indicates an installed cost of $703.6 per kW, based on FERC filings.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
RFC
Balancing Authority
PJM Interconnection, LLC
Grid Voltage
765 kV
Regulatory Status
RE
Entity Type
Investor-Owned Utility
Sector
Electric Utility
Generation
615.4K MWh
Latest Month
9.6M MWh
Annual Generation
42.1%
Capacity Factor
Jan 2023 – Dec 2025
Financial DataBeta
Source: FERC Form 1HIGH
$1,210/kW
Installed Cost
$51.3/MWh
Operating Cost
Indiana Michigan Power Company
Reporting Utility
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Pricing & Market Data
HIGH confidencePoint of Interconnection
Nearest Substation
Rockport Station · 765 kV
Substation Distance
< 10 km
Operator
Indiana Michigan Power
Coord Source
OSM spatial
Market Position
ISO/RTO Market
PJM
LMP Node
40243837
Pricing Hub
N ILLINOIS HUB
Node Source
EIA-860 direct report
News & Articles (10)Beta
Last updated 2026-03-26
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