Louisa
Louisa is a coal plant in Louisa County, Iowa, operated by MidAmerican Energy Co. It ranks second by nameplate capacity among Iowa’s 306 power plants. Ownership is shared by eight organizations; the largest stake, 88%, is held by MidAmerican Energy Co. Its biggest unit, rated at 812 MW, is the second-largest single generator in Iowa.
Nameplate capacity, 2025
812 MW
746 MW net summer capacity
1 operable unit
- Coal steam812 MW100%
Unit by unit, 1983 to 2025
operating in 2025bar height follows unit size
Unit 1 Coal steam, 812 MW, 1983
Among Iowa’s plants
Largest plants in the state by nameplate capacity, with the plants ranked next to this one.
- 1Walter Scott Jr Energy Center1,648 MW
- 2Louisathis plant
- 3Ottumwa726 MW
- 4Marshalltown Generating Station709 MW
Other rankings
- All US power plants
- 398th of 14,286
- US coal plants
- 90th of 195
- Coal plants in Iowa
- 2nd of 8
- Plants in the MISO (Midcontinent) balancing area
- 59th of 2,383
- Plants run by MidAmerican Energy Co
- 2nd of 57
Operable units
| Unit | Technology | Nameplate | Summer | Online | Status |
|---|---|---|---|---|---|
| 1 | Coal steam | 812 MW | 746 MW | 1983 | Operating |
Who owns it
Shares are weighted by the nameplate capacity of each unit an owner holds.
| Owner | Share of capacity |
|---|---|
| MidAmerican Energy Co | 88.0% |
| Central Iowa Power Cooperative | 4.6% |
| IES Utilities, Inc | 4.0% |
| Waverly Municipal Elec Utility (IA) | 1.1% |
| Harlan Municipal Utilities (IA) | 0.8% |
| Eldridge City Utilities | 0.5% |
| City of Geneseo (IL) | 0.5% |
| City of Tipton (IA) | 0.5% |
Grid and site
- Balancing area
- MISO (Midcontinent)
- Reliability region
- Midwest Reliability Organization
- Highest grid connection voltage
- 345 kV
- Water source
- Wells
- Nearest town on record
- Muscatine
- Operator type
- Utility
- Coordinates
- 41.318°N, 91.093°W
Closest plants
| Plant | Runs on | Capacity | Distance |
|---|---|---|---|
| Muscatine Plant #1 | Coal | 276 MW | 5.4 mi north |
| Wapello Solar LLC | Solar | 100 MW | 12.2 mi south |
| Wilton | Oil and petroleum | 9.2 MW | 19.0 mi north |
| West Liberty | Oil and petroleum | 14 MW | 19.5 mi northwest |
| Eastern Iowa Solar | Solar | 1.8 MW | 19.5 mi north |
| Pope Creek Solar PV | Solar | 5 MW | 20.3 mi southeast |
| Durant | Oil and petroleum | 4.4 MW | 21.6 mi northeast |
| Davenport Water Pollution Control Plant | Biomass and waste | 1.6 MW | 27.0 mi northeast |