| State Rank | County | (Past Year)">Net Generation (Past Year) | Power Plants |
|---|
| #3 | Adair County, IA | 4.2 TWh | 18 |
| #43 | Adams County, IA | 574.5 GWh | 3 |
| #40 | Allamakee County, IA | 683.1 GWh | 2 |
| #59 | Appanoose County, IA | 14.5 GWh | 2 |
| #21 | Audubon County, IA | 1.4 TWh | 3 |
| #58 | Black Hawk County, IA | 53.5 GWh | 9 |
| #20 | Boone County, IA | 1.4 TWh | 3 |
| #53 | Bremer County, IA | 169.9 GWh | 5 |
| #29 | Buena Vista County, IA | 980.6 GWh | 5 |
| #23 | Carroll County, IA | 1.2 TWh | 5 |
| #13 | Cass County, IA | 1.7 TWh | 6 |
| #60 | Cedar County, IA | 10.7 GWh | 4 |
| #5 | Cerro Gordo County, IA | 3.5 TWh | 6 |
| #34 | Cherokee County, IA | 889.2 GWh | 1 |
| #56 | Chickasaw County, IA | 86.7 GWh | 2 |
| #25 | Clay County, IA | 1.2 TWh | 3 |
| #70 | Clayton County, IA | 2.2 GWh | 4 |
| #37 | Clinton County, IA | 770.8 GWh | 2 |
| #51 | Crawford County, IA | 253.4 GWh | 3 |
| #69 | Davis County, IA | 2.3 GWh | 2 |
| #71 | Decatur County, IA | 369.6 MWh | 1 |
| #47 | Delaware County, IA | 415.5 GWh | 5 |
| #64 | Des Moines County, IA | 6.4 GWh | 2 |
| #44 | Dickinson County, IA | 517.7 GWh | 5 |
| #65 | Dubuque County, IA | 5.8 GWh | 6 |
| #67 | Emmet County, IA | 3.6 GWh | 2 |
| #50 | Floyd County, IA | 334.9 GWh | 3 |
| #12 | Franklin County, IA | 1.7 TWh | 5 |
| #52 | Greene County, IA | 247.2 GWh | 5 |
| #30 | Grundy County, IA | 928.8 GWh | 4 |
| #38 | Guthrie County, IA | 757.2 GWh | 3 |
| #18 | Hamilton County, IA | 1.5 TWh | 4 |
| #15 | Hancock County, IA | 1.7 TWh | 3 |
| #46 | Hardin County, IA | 422.3 GWh | 3 |
| #62 | Henry County, IA | 7.2 GWh | 2 |
| #42 | Howard County, IA | 583.0 GWh | 3 |
| #9 | Ida County, IA | 2.0 TWh | 2 |
| #33 | Iowa County, IA | 902.9 GWh | 3 |
| #66 | Jackson County, IA | 3.9 GWh | 5 |
| #57 | Johnson County, IA | 61.9 GWh | 5 |
| #14 | Kossuth County, IA | 1.7 TWh | 9 |
| #27 | Lee County, IA | 1.2 TWh | 3 |
| #28 | Linn County, IA | 1.1 TWh | 20 |
| #4 | Louisa County, IA | 4.1 TWh | 2 |
| #73 | Lyon County, IA | 40.8 MWh | 1 |
| #48 | Madison County, IA | 408.5 GWh | 2 |
| #41 | Mahaska County, IA | 613.1 GWh | 1 |
| #55 | Marion County, IA | 108.2 GWh | 5 |
| #2 | Marshall County, IA | 4.9 TWh | 7 |
| #17 | Mitchell County, IA | 1.6 TWh | 5 |
| #54 | Monroe County, IA | 113.8 GWh | 1 |
| #74 | Montgomery County, IA | 28.4 MWh | 1 |
| #45 | Muscatine County, IA | 515.7 GWh | 5 |
| #7 | O'Brien County, IA | 2.8 TWh | 3 |
| #39 | Osceola County, IA | 684.7 GWh | 8 |
| #72 | Page County, IA | 129.6 MWh | 1 |
| #16 | Palo Alto County, IA | 1.6 TWh | 4 |
| #36 | Plymouth County, IA | 830.0 GWh | 1 |
| #19 | Pocahontas County, IA | 1.5 TWh | 4 |
| #11 | Polk County, IA | 1.7 TWh | 9 |
| #1 | Pottawattamie County, IA | 6.8 TWh | 2 |
| #10 | Poweshiek County, IA | 2.0 TWh | 9 |
| #31 | Sac County, IA | 914.0 GWh | 2 |
| #61 | Scott County, IA | 7.9 GWh | 3 |
| #26 | Story County, IA | 1.2 TWh | 17 |
| #63 | Tama County, IA | 6.9 GWh | 5 |
| #49 | Taylor County, IA | 385.6 GWh | 4 |
| #32 | Union County, IA | 905.9 GWh | 2 |
| #6 | Wapello County, IA | 3.2 TWh | 2 |
| #22 | Webster County, IA | 1.3 TWh | 5 |
| #24 | Winnebago County, IA | 1.2 TWh | 7 |
| #68 | Winneshiek County, IA | 2.7 GWh | 2 |
| #8 | Woodbury County, IA | 2.4 TWh | 3 |
| #35 | Worth County, IA | 833.2 GWh | 7 |
Net Generation data is based on the last 12 months since Dec 2022
