Rockport
Coal power plant in Spencer County, Indiana. 2,600 MW of nameplate capacity across 2 generators, operated by Indiana Michigan Power Co.
Also known as Rockport Generating Station · Rockport Power Plant · EIA plant 6166
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Key facts
- Capacity
- 2,600 MWNameplate
- Generators
- 2 operatingEIA-860M, August 2026
- Operating since
- December 1984First generator online
- Operator
- Indiana Michigan Power CoEIA operator ID 9324
- Grid
- PJMBalancing authority PJM
- Price nodes
- 2 PJM nodesResource nodes with prices
- Location
- Spencer County, IN37.9256, −87.0372
- EIA plant ID
- 6166EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Rockport produces
Free · EIA-923Net generation, 2025
9.64 TWh
9,635,223 MWh, final
Capacity factor, 2025
42.3%
2024: 22.2%
January to July 2026
5.92 TWh
Provisional
Range, 2015 to 2025
2.5–12.4
TWh a year. Low 2023, high 2015
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 17,933,848 | Not reported | 12 of 12 |
| 2001 | 17,570,417 | Not reported | 12 of 12 |
| 2002 | 16,643,319 | Not reported | 12 of 12 |
| 2003 | 17,977,833 | Not reported | 12 of 12 |
| 2004 | 17,034,011 | Not reported | 12 of 12 |
| 2005 | 17,942,286 | Not reported | 12 of 12 |
| 2006 | 20,356,894 | Not reported | 12 of 12 |
| 2007 | 16,114,255 | Not reported | 12 of 12 |
| 2008 | 19,900,735 | Not reported | 12 of 12 |
| 2009 | 18,725,635 | Not reported | 12 of 12 |
| 2010 | 17,631,746 | 77.4% | 12 of 12 |
| 2011 | 16,391,329 | 72.0% | 12 of 12 |
| 2012 | 18,779,569 | 82.2% | 12 of 12 |
| 2013 | 15,807,781 | 69.4% | 12 of 12 |
| 2014 | 16,717,090 | 73.4% | 12 of 12 |
| 2015 | 12,442,473 | 54.6% | 12 of 12 |
| 2016 | 11,557,870 | 50.6% | 12 of 12 |
| 2017 | 10,923,442 | 48.0% | 12 of 12 |
| 2018 | 11,894,109 | 52.2% | 12 of 12 |
| 2019 | 8,146,946 | 35.8% | 12 of 12 |
| 2020 | 4,038,785 | 17.7% | 12 of 12 |
| 2021 | 4,802,163 | 21.1% | 12 of 12 |
| 2022 | 4,500,501 | 19.8% | 12 of 12 |
| 2023 | 2,493,652 | 10.9% | 12 of 12 |
| 2024 | 5,060,787 | 22.2% | 12 of 12 |
| 2025 | 9,635,223 | 42.3% | 12 of 12 |
| 2026 (provisional, partial year) | 5,915,942 | 44.7% | 7 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · PJMEmissions
Free · EPA CAMPDCO₂, 2025
10.90M
US short tons. 2024: 5.64M
SO₂, 2025
5,942
US short tons
NOx, 2025
3,802
US short tons
CO₂ per MWh, calculated
1.13 t
About 2,263 lb per MWh
2 of 2 EPA units reported CO₂ in 2025 (MB1, MB2), matched to EIA plant 6166 through the EPA–EIA crosswalk. The per-MWh rate is EPA CO₂ divided by EIA-923 net generation. The two reporting boundaries can differ.
Water use
Free · EIA-923 cooling, USGSWithdrawal, 2024
4,210
million gallons
Consumption, 2024
3,537
million gallons
Source
Ohio River
Surface, Fresh. Natural-draft tower
Watershed stress
Very low/none · 0.127
USGS SUI, HUC12 Huffman Ditch
24 of 24 cooling months report withdrawal. SUI of the source river HUC12 within 3 km. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Steam Coal | 1,300.0 | December 1984 |
| 2 | Conventional Steam Coal | 1,300.0 | December 1989 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists Indiana Michigan Power Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Power plants near Rockport
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Questions about Rockport
How much power does Rockport produce?
Rockport reported 9,635,223 MWh (9.64 TWh) of net generation in 2025, a 42.3% capacity factor on 2,600 MW of nameplate capacity. From January to July 2026 it reported 5.92 TWh, which is provisional.
Where is Rockport?
Rockport is in Spencer County, Indiana, at 37.9256, −87.0372. It is in the PJM Interconnection, LLC balancing area (PJM).
Who operates Rockport?
EIA-860M for August 2026 lists Indiana Michigan Power Co as the operator (EIA operator ID 9324). The operator is not always the owner.
When did Rockport start operating?
Its first generator began operating in December 1984, according to EIA-860M.
Does InfraMap have power prices for Rockport?
Yes. InfraMap has PJM day-ahead and real-time prices at 2 price nodes linked to Rockport, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- EPA CAMPD annual emissions through the EPA–EIA crosswalk, 1995 to 2025
- PJM day-ahead and real-time prices; node and hub assignments as of 2026-10-05
- EIA-923 cooling water 2024 and the USGS surface water supply and use index, Water years 2010-2020 (Oct 2009 to Sep 2020), mean of monthly values
- Plant names from OpenStreetMap, © OpenStreetMap contributors (ODbL)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page