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2600 MW Sub. Coal operating in Spencer, IN — PJM Interconnection, LLC
2,600 MW
Nameplate Capacity
2
Generators
units
Conventional Steam Coal
Technology
1984
Operating Since
Coordinates
37.9256, -87.0372
County
Spencer, IN
Nearby Plants
| 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 | — | — |
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
ISO/RTO
PJM
Market
ISO/RTO Member
NERC Region
RFC
Balancing Authority
615.4K MWh
Latest Month
9.6M MWh
Annual Generation
42.1%
Capacity Factor
CO₂ Intensity
2718 lb/MWh
NOx
0.922 lb/MWh
SO₂
Steam turbine · Indiana Michigan Power Company · Data from 2015–2024
$1,210/kW
Installed Cost
$0/kW
Annual CapEx
$51.3/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Point 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
Alt. Hub / Zone
AEP-DAYTON HUB
Node Source
EIA-860 direct report
Last updated 2026-04-09
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ask pi about RockportPJM Interconnection, LLC (PJM)
Grid Voltage
765.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
2 lb/MWh
CH₄
0.301 lb/MWh
N₂O
0.044 lb/MWh
Capacity Factor
10.9%
Annual Net Gen
2494 GWh
CO₂eq
2738 lb/MWh
Subregion
RFC West