| Walter Scott Jr Energy Center | Pottawattamie | Operational | 1.64 GW | 2 | Coal | MidAmerican Energy Co |
| Louisa | Louisa | Operational | 811.9 MW | 1 | Coal | MidAmerican Energy Co |
| Ottumwa | Wapello | Operational | 725.9 MW | 1 | Coal | Interstate Power and Light Co |
| Marshalltown Generating Station | Marshall | Operational | 708.8 MW | 5 | Gas, Solar, Battery | Interstate Power and Light Co |
| George Neal South | Woodbury | Operational | 695.9 MW | 1 | Coal | MidAmerican Energy Co |
| Emery Station | Cerro Gordo | Operational | 602.8 MW | 3 | Gas | Interstate Power and Light Co |
| George Neal North | Woodbury | Operational | 584.1 MW | 1 | Coal | MidAmerican Energy Co |
| Greater Des Moines | Polk | Operational | 576.3 MW | 3 | Gas | MidAmerican Energy Co |
| Highland Wind Project (IA) | O'Brien | Operational | 502 MW | 7 | Wind | MidAmerican Energy Co |
| Orient Wind Farm | Adair | Operational | 500.8 MW | 2 | Wind | MidAmerican Energy Co |
| Rolling Hills Wind Farm | Cass | Operational | 484.2 MW | 1 | Wind | MidAmerican Energy Co |
| Hawkeye Solar, LLC | Clinton | Planned | 450 MW | 2 | Solar | Hawkeye Solar, LLC |
| Beaver Creek Wind | Boone | Operational | 340 MW | 2 | Wind | MidAmerican Energy Co |
| North English | Poweshiek | Operational | 340 MW | 2 | Wind | MidAmerican Energy Co |
| Palo Alto Wind Farm | Palo Alto | Operational | 340 MW | 2 | Wind | MidAmerican Energy Co |
| Muscatine Plant #1 | Muscatine | Operational, expanding | 310.5 MW | 4 | Coal, Gas | Board of Water Electric & Communications |
| Arbor Hill Wind Farm | Adair | Operational | 310 MW | 2 | Wind | MidAmerican Energy Co |
| Ida Grove Wind | Ida | Operational | 301.1 MW | 4 | Wind | MidAmerican Energy Co |
| Pioneer Prairie Wind Farm | Mitchell | Operational | 300 MW | 1 | Wind | Pioneer Prairie Wind Farm I, LLC |
| Upland Prairie | Clay | Operational | 299.3 MW | 1 | Wind | Interstate Power and Light Co |
| Archer Daniels Midland Cedar Rapids | Linn | Operational | 294.6 MW | 7 | Coal, Gas | Archer Daniels Midland Co |
| Burlington (IA) | Des Moines | Operational | 290.8 MW | 5 | Gas | Interstate Power and Light Co |
| Pomeroy Wind Farm | Pocahontas | Operational | 286.4 MW | 4 | Wind | MidAmerican Energy Co |
| Lundgren Wind Project | Webster | Operational | 270.9 MW | 1 | Wind | MidAmerican Energy Co |
| Electrifarm | Black Hawk | Operational | 264.1 MW | 3 | Gas | MidAmerican Energy Co |
| Southern Hills Wind Farm | Union | Operational | 254.1 MW | 1 | Wind | MidAmerican Energy Co |
| Diamond Trail Wind Farm | Iowa | Operational | 252.5 MW | 1 | Wind | MidAmerican Energy Co |
| Silver Queen Wind Farm | Crawford | Planned | 252 MW | 1 | Wind | Silver Queen Wind Farm, LLC |
| O'Brien Wind | O'Brien | Operational | 250.3 MW | 3 | Wind | MidAmerican Energy Co |
| Hawkeye Solar II, LLC | Clinton | Planned | 250 MW | 1 | Solar | Hawkeye Solar II, LLC |
| Wever Solar (150MW) | Lee | Operational | 249 MW | 2 | Solar, Battery | Interstate Power and Light Co |
| Great Pathfinder Wind | Hamilton | Operational | 224.4 MW | 1 | Wind | Great Pathfinder Wind |
| Shenandoah Hills Wind Farm | Page | Operational | 214.3 MW | 1 | Wind | MidAmerican Energy Co |
| Glaciers Edge Wind Project | Cherokee | Operational | 211.7 MW | 1 | Wind | EDF Renewable Asset Holdings, Inc. |
| Eclipse Wind Farm | Guthrie | Operational | 207.1 MW | 1 | Wind | MidAmerican Energy Co |
| Ledyard Windpower, LLC | Kossuth | Operational | 207 MW | 1 | Wind | Deriva Energy |
| Plymouth Wind | Plymouth | Operational | 202.7 MW | 1 | Wind | MidAmerican Energy Co |
| Chickasaw Wind Farm | Chickasaw | Operational | 202.4 MW | 1 | Wind | MidAmerican Energy Co |
| Whispering Willow North | Franklin | Operational | 201.3 MW | 1 | Wind | Interstate Power and Light Co |
| Century | Hamilton | Operational | 201.2 MW | 3 | Wind | MidAmerican Energy Co |
| Ida Grove II | Ida | Operational | 201 MW | 1 | Wind | MidAmerican Energy Co |
| FPL Energy Crystal Lake Wind II LLC | Hancock | Operational | 200 MW | 1 | Wind | FPL Energy Crystal Lake Wind II LLC |
| Heartland Divide II | Audubon | Operational | 200 MW | 1 | Wind | Heartland Divide II |
| Golden Plains | Winnebago | Operational | 199.8 MW | 1 | Wind | Interstate Power and Light Co |
| Whispering Willow Wind Farm - East | Franklin | Operational | 199.7 MW | 1 | Wind | Interstate Power and Light Co |
| Turtle Creek Wind Farm LLC | Mitchell | Operational | 199.2 MW | 1 | Wind | Turtle Creek Wind Farm LLC |
| Prairie Creek | Linn | Operational | 198.8 MW | 2 | Gas, Coal | Interstate Power and Light Co |
| Marshalltown | Marshall | Operational | 189 MW | 3 | Gas | Interstate Power and Light Co |
| Exira | Audubon | Operational | 181.5 MW | 3 | Gas | Western Minnesota Mun Pwr Agny |
| Archer Daniels Midland Clinton | Clinton | Operational | 180 MW | 2 | Coal | Archer Daniels Midland Co |
| Pleasant Hill | Polk | Operational | 179.8 MW | 3 | Gas | MidAmerican Energy Co |
| Intrepid | Buena Vista | Operational | 175.5 MW | 2 | Wind | MidAmerican Energy Co |
| Adair Wind Farm | Adair | Operational | 174.8 MW | 1 | Wind | MidAmerican Energy Co |
| English Farms | Poweshiek | Operational | 171.5 MW | 1 | Wind | Interstate Power and Light Co |
| Salt Creek Wind | Tama | Operational | 169.4 MW | 1 | Wind | Salt Creek Wind, LLC |
| Prairie Wind Farm | Mahaska | Operational | 168 MW | 1 | Wind | MidAmerican Energy Co |
| Walnut Wind Farm | Pottawattamie | Operational | 165.2 MW | 1 | Wind | MidAmerican Energy Co |
| Carroll Wind Farm | Carroll | Operational | 159.1 MW | 1 | Wind | MidAmerican Energy Co |
| Barton Windpower LLC | Worth | Operational | 158 MW | 2 | Wind | Avangrid Power LLC |
| Sycamore (IA) | Polk | Operational | 157.6 MW | 2 | Gas | MidAmerican Energy Co |
| Adams Wind | Adams | Operational | 154.3 MW | 4 | Wind | MidAmerican Energy Co |
| Kossuth | Kossuth | Operational | 152.2 MW | 1 | Wind | Wisconsin Power & Light Co |
| Vienna Wind Farm | Marshall | Operational | 150.2 MW | 2 | Wind | MidAmerican Energy Co |
| FPL Energy Crystal Lake Wind LLC | Hancock | Operational | 150 MW | 1 | Wind | FPL Energy Crystal Lake Wind LLC |
| FPL Energy Story Wind LLC | Story | Operational | 150 MW | 1 | Wind | FPL Energy Story Wind LLC |
| Garden Wind LLC | Hardin | Operational | 150 MW | 1 | Wind | Garden Wind LLC |
| Pleasant Creek Unit 2 | Linn | Operational | 150 MW | 1 | Solar | Interstate Power and Light Co |
| Rock Creek Solar | Clinton | Planned | 150 MW | 1 | Solar | Rock Creek Solar LLC |
| Wellsburg Wind Project | Grundy | Operational | 140.8 MW | 1 | Wind | MidAmerican Energy Co |
| Richland (IA) | Sac | Operational | 130.9 MW | 1 | Wind | Interstate Power and Light Co |
| River Hills | Polk | Operational | 128 MW | 8 | Gas | MidAmerican Energy Co |
| Keokuk | Lee | Operational | 124.8 MW | 15 | Hydro | Union Electric Co - (MO) |
| Laurel Wind Farm | Marshall | Operational | 123.4 MW | 1 | Wind | MidAmerican Energy Co |
| Macksburg Wind Project | Madison | Operational | 119.6 MW | 1 | Wind | MidAmerican Energy Co |
| Earl F Wisdom | Clay | Operational | 119.1 MW | 2 | Gas | Corn Belt Power Coop |
| Summit Lake | Union | Operational | 118.7 MW | 5 | Gas | Central Iowa Power Cooperative |
| Storm Lake 1 | Buena Vista | Operational | 113.9 MW | 3 | Wind | ALLETE Clean Energy |
| Contrail Wind Farm | Taylor | Operational | 112.4 MW | 1 | Wind | MidAmerican Energy Co |
| Morning Light Wind Farm | Adair | Operational | 110.9 MW | 1 | Wind | MidAmerican Energy Co |
| Ames Electric Services Power Plant | Story | Operational | 108.8 MW | 2 | Gas | City of Ames - (IA) |
| Victory Wind Farm | Carroll | Operational | 105 MW | 1 | Wind | MidAmerican Energy Co |
| Heartland Divide Wind Project, LLC | Audubon | Operational | 103.5 MW | 1 | Wind | Heartland Divide Wind Project, LLC |
| Coggon Solar LLC | Linn | Planned | 100 MW | 1 | Solar | Clenera DevCo LLC |
| Holliday Creek Solar | Webster | Operational | 100 MW | 1 | Solar | MidAmerican Energy Co |
| Lost Lakes Wind Farm LLC | Dickinson | Operational | 100 MW | 1 | Wind | Lost Lakes Wind Farm LLC |
| New Harvest Wind Project LLC | Crawford | Operational | 100 MW | 1 | Wind | Avangrid Power LLC |
| Wapello Solar LLC | Louisa | Operational | 100 MW | 1 | Solar | Wapello Solar LLC |
| Crane Creek Wind Energy Center | Howard | Operational | 99 MW | 1 | Wind | Wisconsin Public Service Corp |
| Franklin County Wind Farm | Franklin | Operational | 99 MW | 1 | Wind | Interstate Power and Light Co |
| Osceola Windpower LLC | Osceola | Operational | 98.2 MW | 1 | Wind | Osceola Windpower LLC |
| Hancock County Wind Energy Center | Hancock | Operational | 98 MW | 1 | Wind | FPL Energy Hancock County Wind, LLC |
| Ivester Wind Farm | Grundy | Operational | 90.8 MW | 1 | Wind | MidAmerican Energy Co |
| Lime Creek | Cerro Gordo | Operational | 90.2 MW | 2 | Oil | Interstate Power and Light Co |
| Roquette America | Lee | Operational | 84.4 MW | 3 | Gas, Coal | Roquette America |
| Storm Lake II | Buena Vista | Operational | 80.2 MW | 1 | Wind | ALLETE Clean Energy |
| Charles City Wind Farm | Floyd | Operational | 80 MW | 1 | Wind | MidAmerican Energy Co |
| Northern Iowa Windpower II | Worth | Operational | 80 MW | 1 | Wind | Avangrid Power LLC |
| Old Gold Energy Center, LLC | Worth | Operational | 80 MW | 1 | Wind | Old Gold Energy Center, LLC |
| Pocahontas Prairie Wind Farm | Pocahontas | Operational | 80 MW | 1 | Wind | MidAmerican Energy Co |
| Sac County Wind, LLC | Sac | Operational | 80 MW | 1 | Wind | Sac County Wind |
| Ames GT | Story | Operational | 78.7 MW | 2 | Oil | City of Ames - (IA) |
| Coralville GT | Johnson | Operational | 72 MW | 4 | Gas | MidAmerican Energy Co |
| Kossuth County Wind | Kossuth | Operational | 70 MW | 1 | Wind | Kossuth County Wind, LLC |
| Crystal Lake 3 LLC | Winnebago | Operational | 66 MW | 1 | Wind | Crystal Lake 3 LLC |
| Saratoga Wind Farm | Howard | Operational | 66 MW | 1 | Wind | Madison Gas & Electric Co |
| Independence Wind Farm | Delaware | Operational | 55.4 MW | 1 | Wind | Independence Wind Energy LLC |
| Red Rock Hydro Plant | Marion | Operational | 55.2 MW | 2 | Hydro | Western Minnesota Mun Pwr Agny |
| Streeter Station | Black Hawk | Operational | 51.5 MW | 2 | Gas | Cedar Falls Utilities |
| Creston Solar (50 MW) | Union | Operational | 50 MW | 1 | Solar | Interstate Power and Light Co |
| Mills Solar Project | Mills | Planned | 50 MW | 1 | Solar | MidAmerican Energy Co |
| Pleasant Creek Unit 1 | Linn | Operational | 50 MW | 1 | Solar | Interstate Power and Light Co |
| Rippey Wind Farm | Greene | Operational | 50 MW | 1 | Wind | Greenbacker Renewable Energy Corporation |
| Osceola Windpower II | Osceola | Operational | 49.6 MW | 1 | Wind | Osceola Windpower II |
| Flying Cloud Power Partners LLC | Dickinson | Operational | 43.5 MW | 1 | Wind | Avangrid Power LLC |
| Gas Turbine (IA) | Black Hawk | Operational | 43.4 MW | 2 | Gas | Cedar Falls Utilities |
| Cerro Gordo Wind Farm | Cerro Gordo | Operational | 42 MW | 1 | Wind | Cerro Gordo Wind Farm |
| Hawkeye Power Partners LLC | Cerro Gordo | Operational | 42 MW | 1 | Wind | Hawkeye Power Partners LLC |
| Indianola | Warren | Operational | 40.9 MW | 2 | Oil | Indianola Municipal Utilities - (IA) |
| Elk Wind Farm | Delaware | Operational | 40.8 MW | 1 | Wind | Greenbacker Renewable Energy Corporation |
| University of Iowa Main Power Plant | Johnson | Operational | 40.5 MW | 8 | Gas, Oil | University of Iowa |
| Cargill Corn Milling Division | Monroe | Operational | 40 MW | 2 | Gas | Cargill Inc North America Sweetners |
| Iowa State University | Story | Operational | 39.8 MW | 3 | Gas | Iowa State University |
| Prescott Wind Farm | Adams | Operational | 38.7 MW | 1 | Wind | Prescott Wind Energy LLC |
| Merl Parr | Floyd | Operational | 36 MW | 2 | Gas | MidAmerican Energy Co |
| Hawkeye Wind Farm | Bremer | Operational | 35 MW | 1 | Wind | Greenbacker Renewable Energy Corporation |
| Top of Iowa Windfarm III | Worth | Operational | 29.7 MW | 1 | Wind | Madison Gas & Electric Co |
| Pella Peaking | Marion | Operational | 28 MW | 14 | Oil | City of Pella - (IA) |
| New Hampton | Chickasaw | Operational | 26.5 MW | 5 | Gas, Oil | City of New Hampton - (IA) |
| Waverly Municipal Electric North Plant | Bremer | Operational | 25.1 MW | 8 | Oil, Gas | Waverly Municipal Elec Utility - (IA) |
| Arbor Hill Solar | Adair | Operational | 25 MW | 1 | Solar | MidAmerican Energy Co |
| Maquoketa 1 | Jackson | Operational | 24.4 MW | 9 | Gas, Oil | City of Maquoketa - (IA) |
| MPW Solar 1 | Muscatine | Planned | 24 MW | 1 | Solar | MPW Solar 1, LLC |
| Mt Pleasant | Henry | Operational | 24 MW | 12 | Oil | City of Mt Pleasant - (IA) |
| Spencer Gas Turbine | Clay | Operational | 23.8 MW | 1 | Oil | City of Spencer - (IA) |
| Forest City Light Plant | Winnebago | Operational | 22 MW | 6 | Oil | City of Forest City- (IA) |
| Amana Society Service Company | Iowa | Operational | 21.6 MW | 12 | Oil | Amana Society Service Co |
| Webster City | Hamilton | Operational | 21.3 MW | 1 | Oil | City of Webster City - (IA) |
| Crosswind Energy Project | Palo Alto | Operational | 21 MW | 1 | Wind | Crosswind Holdco LLC |
| Carroll Area Wind Farm | Carroll | Operational | 20.7 MW | 1 | Wind | SRIV Partnership LLC |
| Shenandoah | Page | Operational | 20 MW | 10 | Oil | MidAmerican Energy Co |
| Winnebago Wind Power Project | Winnebago | Operational | 20 MW | 1 | Wind | Avangrid Power LLC |
| Osage (IA) | Mitchell | Operational | 19 MW | 6 | Gas, Oil, Wind, Solar | City of Osage - (IA) |
| Waterloo Lundquist | Black Hawk | Operational | 18 MW | 9 | Oil | MidAmerican Energy Co |
| Lake Mills | Winnebago | Operational | 17.7 MW | 4 | Oil | City of Lake Mills - (IA) |
| Winterset | Madison | Operational | 17.6 MW | 8 | Oil, Gas | City of Winterset - (IA) |
| Vinton | Benton | Operational | 17.5 MW | 7 | Gas, Oil | City of Vinton - (IA) |
| Algona | Kossuth | Operational | 16.1 MW | 4 | Oil | City of Algona - (IA) |
| Alliant SBD 9106 Rockwell CR | Linn | Operational | 16 MW | 10 | Oil | Industrial Energy Applications Inc |
| Knoxville Industrial | Marion | Operational | 16 MW | 8 | Oil | MidAmerican Energy Co |
| Estherville | Emmet | Operational | 15.6 MW | 5 | Gas, Oil | City of Estherville - (IA) |
| Hardin Hilltop Wind LLC | Greene | Operational | 14.7 MW | 1 | Wind | Hardin Holdco LLC |
| NCAH Central Utility Plant | Story | Operational | 14.1 MW | 9 | Oil, Gas | National Centers for Animal Health |
| West Liberty | Muscatine | Operational | 14 MW | 3 | Oil | City of West Liberty - (IA) |
| Story City | Story | Operational | 13.9 MW | 6 | Oil, Gas | City of Story City - (IA) |
| South Plant (IA) | Bremer | Operational | 12 MW | 6 | Oil | Waverly Municipal Elec Utility - (IA) |
| Alliant SBD 9107 JBS USA | Marshall | Operational | 11.4 MW | 7 | Oil | Industrial Energy Applications Inc |
| Metro Methane Recovery Facility | Polk | Operational | 11.2 MW | 11 | Landfill, Gas | WM Renewable Energy LLC |
| Iowa Lakes Superior Wind Farm | Dickinson | Operational | 10.5 MW | 1 | Wind | Iowa Lakes Electric Coop |
| Lakota Wind Wind Farm | Kossuth | Operational | 10.5 MW | 1 | Wind | Iowa Lakes Electric Coop |
| Lamoni Municipal Utilities | Decatur | Operational | 10.5 MW | 8 | Oil | City of Lamoni - (IA) |
| Atlantic | Cass | Operational | 10 MW | 1 | Gas | Atlantic Municipal Utilities (IA) |
| Bellevue | Jackson | Operational | 9.8 MW | 6 | Oil | City of Bellevue - (IA) |
| Montezuma | Poweshiek | Operational | 9.8 MW | 8 | Oil, Gas | City of Montezuma - (IA) |
| Tipton | Cedar | Operational | 9.3 MW | 5 | Oil | City of Tipton - (IA) |
| Wilton | Muscatine | Operational | 9.2 MW | 5 | Oil | City of Wilton - (IA) |
| John Deere Dubuque Works | Dubuque | Operational | 9 MW | 6 | Oil | John Deere Dubuque Works |
| Grundy Center City Light Plant | Grundy | Operational | 8.7 MW | 3 | Oil | Grundy Center Mun Light & Power |
| Bloomfield | Davis | Operational | 8.5 MW | 6 | Gas, Oil | City of Bloomfield - (IA) |
| Junction Hilltop Wind Farm | Greene | Operational | 8 MW | 1 | Wind | Junction Hilltop Management LLC |
| Maquoketa 2 | Jackson | Operational | 8 MW | 4 | Oil | City of Maquoketa - (IA) |
| NLMU Diesel | Henry | Operational | 8 MW | 4 | Oil | New London Municipal Utilities - (IA) |
| North Generation Plant | Adair | Operational | 8 MW | 4 | Oil | City of Greenfield - (IA) |
| Archer Daniels Midland Des Moines | Polk | Operational | 7.9 MW | 1 | Gas | Archer Daniels Midland Co |
| CED Centerville Wind | Appanoose | Operational | 7.9 MW | 1 | Wind | RWE Clean Energy |
| CED Manchester Wind | Delaware | Operational | 7.9 MW | 1 | Wind | RWE Clean Energy |
| Manning | Carroll | Operational | 7.9 MW | 6 | Oil | City of Manning - (IA) |
| CED Mason City Wind | Cerro Gordo | Operational | 7.5 MW | 1 | Wind | RWE Clean Energy |
| Laurens | Pocahontas | Operational | 7.5 MW | 3 | Oil | City of Laurens - (IA) |
| Otter Creek Ethanol Poet - Ashton | Osceola | Operational | 7.5 MW | 1 | Gas | Otter Creek Ethanol LLC - Poet Ashton |
| University of Northern Iowa | Black Hawk | Operational | 7.5 MW | 1 | Gas | University of Northern Iowa |
| Cascade | Dubuque | Operational | 7.2 MW | 5 | Oil | Cascade Municipal Utilities - (IA) |
| State Center | Marshall | Operational | 7.1 MW | 6 | Oil, Gas, Solar | City of State Center - (IA) |
| Franklin County Solar | Franklin | Operational | 7 MW | 1 | Solar | MidAmerican Energy Co |
| Corning | Adams | Operational | 6.8 MW | 3 | Oil | City of Corning - (IA) |
| West Bend | Palo Alto | Operational | 6.7 MW | 4 | Oil | City of West Bend - (IA) |
| Milford | Dickinson | Operational | 6.5 MW | 5 | Oil | City of Milford - (IA) |
| Alliant SBD0201 Ingredion | Linn | Operational | 6.1 MW | 4 | Oil | Industrial Energy Applications Inc |
| Lenox | Taylor | Operational | 6.1 MW | 5 | Oil | City of Lenox - (IA) |
| Farmers Electric Cooperative - Kalona | Johnson | Operational | 6 MW | 3 | Oil | Farmers Electric Coop - (IA) |
| Allendorf | Osceola | Operational | 5.8 MW | 4 | Wind | E&E Enterprises LLC |
| Alliant SBD 8602 Marion Sub | Linn | Operational | 5.6 MW | 4 | Oil | Industrial Energy Applications Inc |
| Alliant SBD 9203 Profol | Linn | Operational | 5.6 MW | 3 | Oil | American Profol Incorporated |
| Coon Rapids II | Carroll | Operational | 5.4 MW | 3 | Oil | City of Coon Rapids -(IA) |
| La Porte | Black Hawk | Operational | 5.4 MW | 3 | Oil | La Porte City Utilities |
| Sumner | BREMER | Operational | 5.4 MW | 3 | Oil | City of Sumner - (IA) |
| Sibley One | Osceola | Operational | 5.2 MW | 3 | Oil | City of Sibley - (IA) |
| Deer Run Battery | Linn | Operational | 5 MW | 1 | Battery | Interstate Power and Light Co |
| Downtown Generation Plant | Adair | Operational | 5 MW | 2 | Oil | City of Greenfield - (IA) |
| Grinnell Customer Hosted Solar | Poweshiek | Operational | 5 MW | 1 | Solar | Interstate Power and Light Co |
| POET Biorefining - Gowrie | Webster | Operational | 5 MW | 1 | Gas | POET Biorefining - Gowrie |
| POET Biorefining - Jewell | Hamilton | Operational | 5 MW | 1 | Gas | POET Biorefining - Jewell |
| POET Biorefining LLC - Corning | Adams | Operational | 5 MW | 1 | Gas | POET Biorefining LLC - Corning |
| Cedar Rapids Community Solar | Linn | Operational | 4.5 MW | 1 | Solar | Interstate Power and Light Co |
| Panora | GUTHRIE | Operational | 4.5 MW | 3 | Oil | City of Panora - (IA) |
| Durant | Cedar | Operational | 4.4 MW | 2 | Oil | City of Durant - (IA) |
| Gilliam South | Adair | Operational | 4.3 MW | 2 | Oil | City of Stuart - (IA) |
| Bancroft | Kossuth | Operational | 4.2 MW | 3 | Oil | Bancroft Municipal Utilities - (IA) |
| Alliant SBD 9403 Aegon DC | Linn | Operational | 4.1 MW | 3 | Oil | Industrial Energy Applications Inc |
| Hopkinton | Delaware | Operational | 4.1 MW | 2 | Oil | City of Hopkinton - (IA) |
| Alta Municipal Utilities | Buena Vista | Operational | 4 MW | 2 | Oil | City of Alta - (IA) |
| Lake Mills Gas Recovery | Winnebago | Operational | 4 MW | 5 | Landfill, Gas | WM Renewable Energy LLC |
| Lake Park | Dickinson | Operational | 4 MW | 2 | Oil | City of Lake Park - (IA) |
| Neal Energy Center Solar | Woodbury | Operational | 4 MW | 1 | Solar | MidAmerican Energy Co |
| POET Biorefining-Hanlontown, LLC | Worth | Operational | 4 MW | 1 | Other | POET Biorefining-Hanlontown, LLC |
| Traer East | Tama | Operational | 4 MW | 2 | Oil | City of Traer - (IA) |
| Villisca Municipal Power Plant | Montgomery | Operational | 4 MW | 2 | Oil | City of Villisca - (IA) |
| West Diesel Generation Unit | Pocahontas | Operational | 4 MW | 2 | Oil | City of Pocahontas - (IA) |
| Grinnell College | Poweshiek | Operational | 3.9 MW | 1 | Solar | Azimuth 180 Solar Electric, LLC |
| Ogden | Boone | Operational | 3.9 MW | 3 | Oil | City of Ogden - (IA) |
| West Dubuque Solar | Dubuque | Operational | 3.8 MW | 1 | Solar | Interstate Power and Light Co |
| Alliant SBD 9205 A Y McDonald | Dubuque | Operational | 3.6 MW | 3 | Oil | Industrial Energy Applications Inc |
| Preston (IA) | Jackson | Operational | 3.6 MW | 2 | Gas, Oil | City of Preston - (IA) |
| South Strawberry | Clayton | Operational | 3.6 MW | 2 | Oil | City of Strawberry Point -(IA) |
| Waverly Solar - (IA) | Bremer | Operational | 3.6 MW | 1 | Solar | SE Municipal Iowa, LLC |
| Alliant SBD 9301 Prairie Farms | Dubuque | Operational | 3.5 MW | 3 | Oil | Industrial Energy Applications Inc |
| Poet Bioprocessing Emmetsburg | Palo Alto | Operational | 3.5 MW | 1 | Gas | Poet Bioprocessing Emmetsburg |
| Traer Main | Tama | Operational | 3.5 MW | 3 | Oil | City of Traer - (IA) |
| Harlan | Shelby | Operational | 3.4 MW | 2 | Oil | Harlan Municipal Utilities - (IA) |
| Indianola Solar | Warren | Operational | 3.4 MW | 1 | Solar | SE Municipal Iowa, LLC |
| Ottumwa City of | Wapello | Operational | 3.2 MW | 3 | Hydro | City of Ottumwa - (IA) |
| Graettinger | Palo Alto | Operational | 3.1 MW | 2 | Oil | City of Graettinger - (IA) |
| Forest City Solar | Winnebago | Operational | 3 MW | 1 | Solar | Green Street Power Partners |
| Johnson County Hills Solar | Johnson | Operational | 3 MW | 1 | Solar | MidAmerican Energy Co |
| Leonardo Wind 1 LLC | Hardin | Operational | 3 MW | 1 | Wind | Novis Renewables, LLC |
| Michelangelo Wind 1 LLC | Story | Operational | 3 MW | 1 | Wind | Novis Renewables, LLC |
| Michelangelo Wind 3 LLC | Story | Operational | 3 MW | 1 | Wind | Michelangelo Wind 3 LLC |
| Michelangelo Wind 4 LLC | Boone | Operational | 3 MW | 1 | Wind | Novis Renewables, LLC |
| Optimum Wind 3 LLC | Story | Operational | 3 MW | 1 | Wind | Novis Renewables, LLC |
| Optimum Wind 4 LLC | Story | Operational | 3 MW | 1 | Wind | Novis Renewables, LLC |
| Optimum Wind 5 LLC | Story | Operational | 3 MW | 1 | Wind | Novis Renewables, LLC |
| Optimum Wind 6 LLC | Story | Operational | 3 MW | 1 | Wind | Novis Renewables, LLC |
| Optimum Wind 7 LLC | Story | Operational | 3 MW | 1 | Wind | Novis Renewables, LLC |
| Venus Wind 3 LLC | Poweshiek | Operational | 3 MW | 1 | Wind | Novis Renewables, LLC |
| Waterloo Solar (IA) | Black Hawk | Operational | 3 MW | 1 | Solar | MidAmerican Energy Co |
| Anita | Cass | Operational | 2.9 MW | 5 | Oil | City of Anita - (IA) |
| Rockford | Floyd | Operational | 2.9 MW | 3 | Oil | City of Rockford- (IA) |
| Des Moines Wastewater Reclamation Fac | Polk | Operational | 2.8 MW | 2 | Biomass | Des Moines Metro WRF |
| Oakdale Renewable Energy Plant | Johnson | Operational | 2.8 MW | 2 | Gas | University of Iowa |
| Stuart (IA) | Guthrie | Operational | 2.8 MW | 3 | Oil | City of Stuart - (IA) |
| Waverly Community Wind Project | Bremer | Operational | 2.7 MW | 3 | Wind | Waverly Municipal Elec Utility - (IA) |
| REG Mason City Solar | Cerro Gordo | Operational | 2.6 MW | 1 | Solar | REG Mason City, LLC |
| Decorah Battery | Winneshiek | Operational | 2.5 MW | 1 | Battery | Interstate Power and Light Co |
| Douglas (IA) | Mitchell | Operational | 2.5 MW | 1 | Solar | OneEnergy, Inc. |
| Gowrie | Webster | Operational | 2.5 MW | 1 | Oil | Gowrie Municipal Utilities - (IA) |
| Little Cedar | Mitchell | Operational | 2.5 MW | 1 | Solar | OneEnergy, Inc. |
| Rock Rapids | Lyon | Operational | 2.5 MW | 1 | Oil | Rock Rapids Municipal Utility - (IA) |
| Teeple Creek | Allamakee | Planned | 2.5 MW | 1 | Solar | OneEnergy, Inc. |
| Brooklyn | Poweshiek | Operational | 2.3 MW | 1 | Oil | City of Brooklyn - (IA) |
| Brooklyn City North Plant | Poweshiek | Operational | 2.3 MW | 1 | Oil | City of Brooklyn - (IA) |
| Hy-Vee Customer Hosted 2.25MW Solar | Lucas | Operational | 2.3 MW | 1 | Solar | Interstate Power and Light Co |
| Iowa Distributed Wind Generation Project | Kossuth | Operational | 2.3 MW | 1 | Wind | City of Algona - (IA) |
| Dike City Power Plant | Grundy | Operational | 2.2 MW | 1 | Oil | City of Dike - (IA) |
| Alliant SBD 9201 Norplex | Allamakee | Operational | 2.1 MW | 2 | Oil | Industrial Energy Applications Inc |
| Anderson Erickson | Polk | Operational | 2 MW | 1 | Oil | Anderson Erickson Dairy |
| Coggon | Linn | Operational | 2 MW | 1 | Oil | Coggon Municipal Light Plant - (IA) |
| IA - City of Ames - Airport Road | Story | Operational | 2 MW | 1 | Solar | Forefront Power, LLC |
| Primghar | O'Brien | Operational | 2 MW | 1 | Oil | City of Primghar - (IA) |
| Traer South | Tama | Operational | 2 MW | 1 | Oil | City of Traer - (IA) |
| Wind GEM | Adair | Operational | 1.9 MW | 1 | Wind | Wind GEM, LLC |
| August Wind Farm | Taylor | Operational | 1.8 MW | 1 | Wind | August Wind Energy, LLC |
| Birch | Taylor | Operational | 1.8 MW | 1 | Wind | Birch Power LLC |
| Dayton (IA) | Webster | Operational | 1.8 MW | 1 | Oil | City of Dayton - (IA) |
| Earlville | Delaware | Operational | 1.8 MW | 1 | Oil | City of Earlville - (IA) |
| Eastern Iowa Solar | Muscatine | Operational | 1.8 MW | 1 | Solar | Central Iowa Power Cooperative |
| Hampton Substation Energy Storage | Franklin | Operational | 1.8 MW | 1 | Battery | Corn Belt Power Coop |
| Roseman | Cass | Operational | 1.8 MW | 1 | Wind | Roseman Energy, LLC |
| Wapsie Valley Creamery Back Up Generator | Buchanan | Operational | 1.8 MW | 1 | Oil | Wapsie Valley Creamery |
| West Receiving | Crawford | Operational | 1.8 MW | 1 | Oil | City of Denison - (IA) |
| Grand Junction | Greene | Operational | 1.7 MW | 1 | Oil | City of Grand Junction - (IA) |
| Green Energy Machine | Cass | Operational | 1.7 MW | 1 | Wind | Green Energy Machine, LLC |
| Iowa Lakes Community College Wind Farm | Emmet | Operational | 1.7 MW | 1 | Wind | Iowa Lakes Community College |
| Alliant SBD 9206 Donaldson | Howard | Operational | 1.6 MW | 1 | Oil | Industrial Energy Applications Inc |
| Bloomfield Municipal Utilities Solar | Davis | Operational | 1.6 MW | 1 | Solar | Onsite Partners, LLC |
| Cumberland Rose | Adair | Operational | 1.6 MW | 1 | Wind | Cumberland Rose Wind Energy, LLC |
| Davenport Water Pollution Control Plant | Scott | Operational | 1.6 MW | 2 | Biomass | Davenport, City of - (IA) |
| Fontanelle | Adair | Operational | 1.6 MW | 1 | Wind | Forward Fontanelle Power, LLC |
| Greenfield Wind | Adair | Operational | 1.6 MW | 1 | Wind | Greenfield Wind Power, LLC |
| Luther College Wind Project | Winneshiek | Operational | 1.6 MW | 1 | Wind | Luther College Wind Energy Project LLC |
| Meadow Ridge | Adair | Operational | 1.6 MW | 1 | Wind | Meadow Ridge Wind Energy, LLC |
| Roeder Family Wind Farm LLC | Worth | Operational | 1.6 MW | 1 | Wind | RWE Clean Energy |
| Sky Volt | Adair | Operational | 1.6 MW | 1 | Wind | Sky Volt, LLC |
| Windwalkers LLC | Worth | Operational | 1.6 MW | 1 | Wind | RWE Clean Energy |
| Wiota | Cass | Operational | 1.6 MW | 1 | Wind | Wiota Wind Energy, LLC #1 |
| Buffalo Center Wind LLC | Mitchell | Operational | 1.5 MW | 1 | Wind | Buffalo Center Wind LLC |
| Bulldog | Adair | Operational | 1.5 MW | 1 | Wind | Bulldog Wind Energy, LLC |
| Cedar Falls Solar Farm | Black Hawk | Operational | 1.5 MW | 1 | Solar | Altus Power America Management, LLC |
| DPC Madison | Winneshiek | Operational | 1.5 MW | 1 | Solar | SoCore Energy LLC |
| Maple City | Mitchell | Operational | 1.5 MW | 1 | Solar | Altus Power America Management, LLC |
| McGregor | Clayton | Operational | 1.5 MW | 2 | Oil | City of McGregor- (IA) |
| NLMU Wind | Henry | Operational | 1.5 MW | 1 | Wind | New London Municipal Utilities - (IA) |
| Story City Wind Project | Story | Operational | 1.5 MW | 1 | Wind | Hamilton Wind Energy LLC |
| Traer Wind Project | Tama | Operational | 1.5 MW | 1 | Wind | City of Traer - (IA) |
| Wolverine | Adair | Operational | 1.5 MW | 1 | Wind | Wolverine Wind Energy, LLC |
| Creston School Customer Hosted Solar | Union | Operational | 1.4 MW | 1 | Solar | Interstate Power and Light Co |
| ISU Customer Hosted 1MW Solar Project | Story | Operational | 1.4 MW | 1 | Solar | Interstate Power and Light Co |
| Clinton Schools | Clinton | Operational | 1.3 MW | 1 | Solar | Interstate Power and Light Co |
| Strawberry Point DPC Solar | Clayton | Operational | 1.3 MW | 1 | Solar | SoCore Energy LLC |
| Iowa Hydro LLC | Jackson | Operational | 1.2 MW | 2 | Hydro | Zero6 Energy Hydro |
| Knoxville Battery Energy Storage | Marion | Operational | 1.1 MW | 1 | Battery | MidAmerican Energy Co |
| Sibley No Two | Osceola | Operational | 1.1 MW | 1 | Oil | City of Sibley - (IA) |
| AgriReNew | Scott | Operational | 1 MW | 1 | Biomass | AgriReNew |
| Fareway Customer Hosted 1 MW Solar | Boone | Operational | 1 MW | 1 | Solar | Interstate Power and Light Co |
| Perry Customer Hosted 1MW Solar Project | Dallas | Operational | 1 MW | 1 | Solar | Interstate Power and Light Co |