1 Greater Des Moines MidAmerican Energy Co Detailed profile 576.3 MW Natural Gas Fired Combined Cycle MidAmerican Energy Co Polk County 2 Pleasant Hill MidAmerican Energy Co 179.8 MW Natural Gas Fired Combustion Turbine MidAmerican Energy Co Polk County 3 Sycamore (IA) MidAmerican Energy Co 157.6 MW Natural Gas Fired Combustion Turbine MidAmerican Energy Co Polk County 4 Umbriel Solar Umbriel Solar, LLC 150 MW Solar Photovoltaic Umbriel Solar, LLC Polk County 5 River Hills MidAmerican Energy Co 128 MW Natural Gas Fired Combustion Turbine MidAmerican Energy Co Polk County 6 Apple River Solar, LLC Geronimo Power 100 MW Solar Photovoltaic Geronimo Power Polk County 7 RC Thomas Hydroelectric Project East Texas Electric Coop, Inc 26.7 MW Conventional Hydroelectric East Texas Electric Coop, Inc Polk County 8 St Croix Falls Northern States Power Co - Minnesota 23.2 MW Conventional Hydroelectric Northern States Power Co - Minnesota Polk County 9 Frederic Diesel Northwestern Wisconsin Elec Co 13.7 MW Petroleum Liquids Northwestern Wisconsin Elec Co Polk County 10 Metro Methane Recovery Facility WM Renewable Energy LLC 11.2 MW Landfill Gas WM Renewable Energy LLC Polk County 11 Archer Daniels Midland Des Moines Archer Daniels Midland Co 7.9 MW Natural Gas Steam Turbine Archer Daniels Midland Co Polk County 12 American Crystal Sugar East Grand Forks American Crystal Sugar Co 7.5 MW Conventional Steam Coal American Crystal Sugar Co Polk County 13 American Crystal Sugar Crookston American Crystal Sugar Co 6.5 MW Conventional Steam Coal American Crystal Sugar Co Polk County 14 Viresco Turtle Lake Viresco Turtle Lake 3.2 MW Other Waste Biomass Viresco Turtle Lake Polk County 15 Luck OneEnergy, Inc. 2.5 MW Solar Photovoltaic OneEnergy, Inc. Polk County 16 Anderson Erickson Anderson Erickson Dairy 2 MW Petroleum Liquids Anderson Erickson Dairy Polk County 17 Georgetown (Polk Burnett) Greenbacker Renewable Energy Corporation 2 MW Solar Photovoltaic Greenbacker Renewable Energy Corporation Polk County 18 Sand Lake DPC Solar SoCore Energy LLC 1 MW Solar Photovoltaic SoCore Energy LLC Polk County