Louisa
Coal power plant in Louisa County, Iowa. 811.9 MW of nameplate capacity across 1 generator, operated by MidAmerican Energy Co.
Also known as Louisa Generating Station · EIA plant 6664
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Key facts
- Capacity
- 811.9 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- October 1983First generator online
- Operator
- MidAmerican Energy CoEIA operator ID 12341
- Grid
- MISOBalancing authority MISO
- Price nodes
- 3 MISO nodesResource nodes with prices
- Location
- Louisa County, IA41.3181, −91.0931
- EIA plant ID
- 6664EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Louisa produces
Free · EIA-923Net generation, 2025
4.53 TWh
4,534,173 MWh, final
Capacity factor, 2025
63.8%
2024: 38.2%
January to July 2026
2.21 TWh
Provisional
Range, 2015 to 2025
1.9–4.9
TWh a year. Low 2020, high 2018
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 4,431,136 | Not reported | 12 of 12 |
| 2001 | 4,382,399 | Not reported | 12 of 12 |
| 2002 | 4,927,254 | Not reported | 12 of 12 |
| 2003 | 4,426,380 | Not reported | 12 of 12 |
| 2004 | 4,772,123 | Not reported | 12 of 12 |
| 2005 | 3,795,679 | Not reported | 12 of 12 |
| 2006 | 4,467,331 | Not reported | 12 of 12 |
| 2007 | 3,681,315 | Not reported | 12 of 12 |
| 2008 | 4,919,163 | Not reported | 12 of 12 |
| 2009 | 4,728,795 | Not reported | 12 of 12 |
| 2010 | 5,366,407 | 75.5% | 12 of 12 |
| 2011 | 4,292,959 | 60.4% | 12 of 12 |
| 2012 | 5,162,696 | 72.4% | 12 of 12 |
| 2013 | 4,701,403 | 66.1% | 12 of 12 |
| 2014 | 4,970,029 | 69.9% | 12 of 12 |
| 2015 | 3,995,922 | 56.2% | 12 of 12 |
| 2016 | 3,371,451 | Not reported | 12 of 12 |
| 2017 | 3,520,888 | 49.5% | 12 of 12 |
| 2018 | 4,878,999 | 68.6% | 12 of 12 |
| 2019 | 3,346,358 | 47.1% | 12 of 12 |
| 2020 | 1,852,138 | 26.0% | 12 of 12 |
| 2021 | 4,353,143 | 61.2% | 12 of 12 |
| 2022 | 3,151,308 | Not reported | 12 of 12 |
| 2023 | 3,612,095 | 50.8% | 12 of 12 |
| 2024 | 2,721,980 | 38.2% | 12 of 12 |
| 2025 | 4,534,173 | 63.8% | 12 of 12 |
| 2026 (provisional, partial year) | 2,207,006 | 53.4% | 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 · MISOEmissions
Free · EPA CAMPDCO₂, 2025
5.14M
US short tons. 2024: 3.11M
SO₂, 2025
1,786
US short tons
NOx, 2025
4,252
US short tons
CO₂ per MWh, calculated
1.13 t
About 2,268 lb per MWh
1 of 1 EPA units reported CO₂ in 2025 (101), matched to EIA plant 6664 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
714
million gallons
Consumption, 2024
626
million gallons
Source
Wells
Ground, Fresh. Induced-draft tower
Watershed stress
Low · 0.372
USGS SUI, HUC12 Lower Muscatine Slough
12 of 12 cooling months report withdrawal. Groundwater user; SUI describes surface water and is context only. Blank volumes are unreported, not zero.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| 1 | Conventional Steam Coal | 811.9 | October 1983 |
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 MidAmerican Energy 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 Louisa
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Questions about Louisa
How much power does Louisa produce?
Louisa reported 4,534,173 MWh (4.53 TWh) of net generation in 2025, a 63.8% capacity factor on 811.9 MW of nameplate capacity. From January to July 2026 it reported 2.21 TWh, which is provisional.
Where is Louisa?
Louisa is in Louisa County, Iowa, at 41.3181, −91.0931. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Louisa?
EIA-860M for August 2026 lists MidAmerican Energy Co as the operator (EIA operator ID 12341). The operator is not always the owner.
When did Louisa start operating?
Its first generator began operating in October 1983, according to EIA-860M.
Does InfraMap have power prices for Louisa?
Yes. InfraMap has MISO day-ahead and real-time prices at 3 price nodes linked to Louisa, 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
- MISO 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