| Summit Lake | Central Iowa Power Cooperative | Creston, IA | 109 GWh | Feb 1951 | Dec 2025 |
Natural Gas : 99.8%
|
| Farmer City | City of Farmer City - (IL) | Farmer City, IL | 59 MWh | Mar 1951 | Dec 2025 |
Distillate Fuel Oil
|
| Cascade | Cascade Municipal Utilities - (IA) | Cascade, IA | 31 MWh | Mar 1951 | Dec 2025 |
Distillate Fuel Oil
|
| Ogden | City of Ogden - (IA) | Ogden, IA | 73 MWh | Jun 1951 | Dec 2025 |
Distillate Fuel Oil
|
| Edgewater | Wisconsin Power & Light Co | Sheboygan, WI | 2 TWh | Jun 1951 | May 2026 |
Subbituminous Coal : 99.8%
|
| Rockford | City of Rockford- (IA) | Rockford, IA | 6 MWh | Jul 1951 | Dec 2025 |
Distillate Fuel Oil
|
| Louisiana 1 | Entergy Louisiana LLC | Baton Rouge, LA | 3 TWh | Sep 1951 | May 2026 |
Natural Gas : 71.5%
Other Gas : 28.5%
|
| Eagle Valley (IN) | AES Indiana | Martinsville, IN | 5 TWh | Nov 1951 | May 2026 |
Natural Gas
|
| Alpena Cement Plant | Lafarge Corp | Alpena, MI | 206 GWh | Dec 1951 | May 2026 |
Petroleum Coke : 86.8%
Natural Gas : 13.2%
|
| Spring Valley | Spring Valley Pub Utils Comm | Spring Valley, MN | 227 MWh | Dec 1951 | Dec 2025 |
Distillate Fuel Oil : 82.2%
Natural Gas : 17.8%
|
| Fennimore | City of Fennimore - (WI) | Fennimore, WI | 75 MWh | Jan 1952 | Dec 2025 |
Distillate Fuel Oil
|
| Lake Crystal | City of Lake Crystal - (MN) | Lake Crystal, MN | 21 MWh | Apr 1952 | Dec 2025 |
Distillate Fuel Oil
|
| Moose Lake | Moose Lake Water & Light Comm | Moose Lake, MN | 128 MWh | Oct 1952 | Dec 2025 |
Distillate Fuel Oil : 92.0%
Natural Gas : 8.0%
|
| Westrock Hodge (LA) | Westrock (LA) | Hodge, LA | 489 GWh | Nov 1952 | Dec 2025 |
Black Liquor : 51.3%
Natural Gas : 35.6%
Wood/Wood Waste Solids : 13.1%
|
| Cargill Corn Milling Division | Cargill Inc North America Sweetners | Eddyville, IA | 112 GWh | Nov 1952 | Dec 2025 |
Natural Gas
|
| Michigamme Falls | Wisconsin Electric Power Co | Crystal Falls, MI | 29 GWh | May 1953 | Dec 2025 |
Water
|
| Syl Laskin | ALLETE, Inc. | Hoyt Lakes, MN | 196 GWh | May 1953 | Dec 2025 |
Natural Gas
|
| Teche | Cleco Power LLC | Baldwin, LA | 6 GWh | Jun 1953 | Dec 2025 |
Natural Gas
|
| Princeton (IL) | City of Princeton - (IL) | Princeton, IL | 813 MWh | Jun 1953 | Dec 2025 |
Natural Gas : 99.8%
|
| St Clair | DTE Electric Company | East China Twp, MI | 7 GWh | Jul 1953 | May 2026 |
Distillate Fuel Oil : 52.4%
Natural Gas : 47.6%
|
| Hemlock Falls | Wisconsin Electric Power Co | Crystal Falls, MI | 9 GWh | Jul 1953 | Oct 2025 |
Water
|
| Princeton (MN) | Princeton Public Utils Comm | Princeton, MN | 108 MWh | Aug 1953 | Dec 2025 |
Distillate Fuel Oil
|
| Wabash Valley Power IGCC | Wabash Valley Power Assn, Inc | Terre Haute, IN | 482 GWh | Nov 1953 | May 2026 |
Natural Gas
|
| Breese | City of Breese - (IL) | Breese, IL | 539 MWh | Nov 1953 | Dec 2025 |
Distillate Fuel Oil
|
| Consumer Operations LLC | Georgia-Pacific Consumer Oper. Green Bay LLC | Green Bay, WI | 239 GWh | Dec 1953 | May 2026 |
Natural Gas
|
| Walter Scott Jr Energy Center | MidAmerican Energy Co | Council Bluffs, IA | 7 TWh | Feb 1954 | May 2026 |
Subbituminous Coal : 99.1%
Distillate Fuel Oil : 0.8%
|
| Mountain Lake | City of Mountain Lake - (MN) | Mountain Lake, MN | 3 GWh | Apr 1954 | Dec 2025 |
Wind : 96.5%
Distillate Fuel Oil : 1.9%
Natural Gas : 1.6%
|
| WestRock (TX) | WestRock (TX) | Evadale, TX | 415 GWh | May 1954 | Dec 2024 |
Black Liquor : 58.9%
Wood/Wood Waste Solids : 22.0%
Natural Gas : 19.1%
|
| American Crystal Sugar Crookston | American Crystal Sugar Co | Crookston, MN | 41 GWh | Aug 1954 | Dec 2025 |
Subbituminous Coal
|
| Black Dog | Northern States Power Co - Minnesota | Burnsville, MN | 870 GWh | Sep 1954 | Dec 2025 |
Natural Gas
|
| Hennepin Island | Northern States Power Co - Minnesota | Minneapolis, MN | 54 GWh | Sep 1954 | Dec 2025 |
Water
|
| R M Heskett | Montana-Dakota Utilities Co | Mandan, ND | 62 GWh | Oct 1954 | May 2026 |
Natural Gas
|
| West Bend | City of West Bend - (IA) | West Bent, IA | 68 MWh | Nov 1954 | Dec 2025 |
Distillate Fuel Oil
|
| Weston | Wisconsin Public Service Corp | Rothschild, WI | 4 TWh | Nov 1954 | May 2026 |
Subbituminous Coal : 99.3%
Natural Gas : 0.7%
|
| Janesville | City of Janesville - (MN) | Janesville, MN | 35 MWh | Apr 1955 | Dec 2025 |
Distillate Fuel Oil : 97.5%
Natural Gas : 2.5%
|
| Manitowoc | Manitowoc Public Utilities | Manitowoc, WI | 178 GWh | May 1955 | May 2026 |
Wood/Wood Waste Solids : 88.2%
Petroleum Coke : 6.6%
Bituminous Coal : 4.9%
|
| Blakely Mountain | USCE -Vickburg District | Royal, AR | 216 GWh | Aug 1955 | Dec 2025 |
Water
|
| Dafter | Cloverland Electric Co-op | Dafter, MI | 3 GWh | Oct 1955 | Dec 2025 |
Distillate Fuel Oil
|
| Tipton | City of Tipton - (IA) | Tipton, IA | 266 MWh | Oct 1955 | Dec 2025 |
Distillate Fuel Oil
|
| Nine Mile Point | Entergy Louisiana LLC | Westwego, LA | 8 TWh | Oct 1955 | May 2026 |
Natural Gas : 99.2%
Distillate Fuel Oil : 0.8%
|
| Lake Mills | City of Lake Mills - (IA) | Lake Mills, IA | 99 MWh | Dec 1955 | Dec 2025 |
Distillate Fuel Oil
|
| Winterset | City of Winterset - (IA) | Winterset, IA | 33 MWh | Jun 1956 | Dec 2025 |
Distillate Fuel Oil : 57.8%
Natural Gas : 42.2%
|
| Sumner | City of Sumner - (IA) | Sumner, IA | 55 MWh | Jul 1956 | Dec 2025 |
Distillate Fuel Oil
|
| New Ulm | New Ulm Public Utilities Comm | New Ulm, MN | 2 GWh | Dec 1956 | Dec 2025 |
Natural Gas : 59.1%
Distillate Fuel Oil : 40.9%
|
| Columbia (MO) | City of Columbia - (MO) | Columbia, MO | 27 GWh | Dec 1956 | Dec 2025 |
Landfill Gas : 69.6%
Natural Gas : 30.4%
|
| Zeeland | City of Zeeland - (MI) | Zeeland, MI | 600 MWh | Dec 1956 | Dec 2025 |
Natural Gas : 89.2%
Distillate Fuel Oil : 10.8%
|
| Glencoe | Glencoe Light & Power Comm | Glencoe, MN | 146 MWh | May 1957 | Dec 2025 |
Distillate Fuel Oil : 99.7%
|
| Blount Street | Madison Gas & Electric Co | Madison, WI | 59 GWh | May 1957 | Dec 2025 |
Natural Gas
|
| Motiva Enterprises Port Arthur Refinery | Motiva Enterprises LLC | Port Arthur, TX | 2 TWh | May 1957 | May 2026 |
Natural Gas : 90.5%
Other Gas : 9.5%
|
| Geneseo | City of Geneseo - (IL) | Geneseo, IL | 8 GWh | Jun 1957 | May 2026 |
Wind : 73.9%
Solar : 21.1%
Distillate Fuel Oil : 4.9%
|
| Graettinger | City of Graettinger - (IA) | Graettinger, IA | 49 MWh | Jul 1957 | Dec 2025 |
Distillate Fuel Oil
|
| Mora | City of Mora - (MN) | Mora, MN | 1 GWh | Aug 1957 | Dec 2025 |
Natural Gas : 71.2%
Distillate Fuel Oil : 28.8%
|
| Coggon | Coggon Municipal Light Plant - (IA) | Coggon, IA | 38 MWh | Sep 1957 | Dec 2025 |
Distillate Fuel Oil
|
| Hutchinson Plant #1 | Hutchinson Utilities Comm | Hutchinson, MN | 42 GWh | Dec 1957 | Dec 2025 |
Natural Gas
|
| Menomonie | Northern States Power Co - Minnesota | Menomonie, WI | 23 GWh | Dec 1957 | Dec 2025 |
Water
|
| Atlantic Alumina, Gramercy Operations | Atalco Gramercy LLC | Gramercy, LA | 208 GWh | Jan 1958 | Dec 2024 |
Natural Gas
|
| Allen S King | Northern States Power Co - Minnesota | Oak Park Heights, MN | 723 GWh | Feb 1958 | May 2026 |
Subbituminous Coal : 99.4%
|
| Muscatine Plant #1 | Board of Water Electric & Communications | Muscatine, IA | 766 GWh | Mar 1958 | May 2026 |
Subbituminous Coal : 99.7%
|
| Harding Street | AES Indiana | Indianapolis, IN | 4 TWh | May 1958 | May 2026 |
Natural Gas
|
| LaO Energy Systems | Dow Chemical Co | Plaquemine, LA | 1 TWh | May 1958 | Dec 2024 |
Natural Gas : 84.1%
Other Gas : 15.9%
|
| Clay Boswell | ALLETE, Inc. | Cohasset, MN | 6 TWh | Jun 1958 | May 2026 |
Subbituminous Coal : 99.8%
|
| Waverly Municipal Electric North Plant | Waverly Municipal Elec Utility - (IA) | Waverly, IA | 212 MWh | Jul 1958 | Dec 2025 |
Distillate Fuel Oil : 67.7%
Natural Gas : 32.3%
|
| Lewis & Clark | Montana-Dakota Utilities Co | Richland, MT | 12 GWh | Sep 1958 | May 2026 |
Natural Gas
|
| Prairie Creek | Interstate Power and Light Co | Cedar Rapids, IA | 83 GWh | Sep 1958 | May 2026 |
Subbituminous Coal : 62.1%
Natural Gas : 37.9%
|
| Vestaburg | Wolverine Power Supply Coop | Vestaburg, MI | 4 GWh | Dec 1958 | Dec 2025 |
Natural Gas
|
| R S Nelson | Entergy Louisiana LLC | Westlake, LA | 2 TWh | Jan 1959 | May 2026 |
Subbituminous Coal : 99.6%
|
| Red Bud | City of Red Bud - (IL) | Red Bud, IL | 262 MWh | Feb 1959 | Dec 2025 |
Distillate Fuel Oil
|
| John H Warden | L'Anse Warden Electric Company LLC | L'Anse, MI | 111 GWh | Jul 1959 | Dec 2024 |
Wood/Wood Waste Solids : 87.2%
Tire-derived Fuels : 12.6%
|
| Dan E Karn | Consumers Energy Co - (MI) | Essexville, MI | 72 GWh | Oct 1959 | May 2026 |
Natural Gas : 93.2%
Residual Fuel Oil : 6.8%
|
| South Oak Creek | Wisconsin Electric Power Co | Oak Creek, WI | 2 TWh | Nov 1959 | May 2026 |
Subbituminous Coal : 99.5%
|
| Alverno Hydro Plant | Energen Renewables, LLC | Cheboygan, MI | 3 GWh | Dec 1959 | Dec 2025 |
Water
|
| Warrick | AGC Division of APGI Inc | Newburgh, IN | 3 TWh | Mar 1960 | May 2026 |
Bituminous Coal : 98.3%
Natural Gas : 1.7%
|
| Manistique | Cloverland Electric Co-op | Manistique, MI | 1 GWh | Jun 1960 | Dec 2025 |
Distillate Fuel Oil
|
| Iowa State University | Iowa State University | Ames, IA | 71 GWh | Sep 1960 | May 2026 |
Natural Gas : 97.7%
Distillate Fuel Oil : 2.3%
|
| Blue Earth | Blue Earth Light & Water | Blue Earth, MN | 96 MWh | Oct 1960 | Dec 2024 |
Distillate Fuel Oil
|
| Little Gypsy | Entergy Louisiana LLC | La Place, LA | 964 GWh | Feb 1961 | May 2026 |
Natural Gas
|
| Coughlin Power Station | Cleco Power LLC | St Landry, LA | 3 TWh | Mar 1961 | May 2026 |
Natural Gas
|
| MU Combined Heat and Power Plant | Curators of the University of Missouri | Columbia, MO | 200 GWh | Jun 1961 | May 2026 |
Natural Gas : 77.2%
Wood/Wood Waste Solids : 20.4%
Bituminous Coal : 2.4%
|
| L L Wilkins | Clarksdale Public Utilities | Clarksdale, MS | 166 MWh | Sep 1961 | Aug 2025 |
Natural Gas : 71.4%
Distillate Fuel Oil : 28.6%
|
| Sabine | Entergy Texas Inc. | Orange, TX | 4 TWh | Dec 1961 | May 2026 |
Natural Gas
|
| J H Campbell | Consumers Energy Co - (MI) | West Olive, MI | 5 TWh | Sep 1962 | May 2026 |
Subbituminous Coal : 99.6%
|
| Traer Main | City of Traer - (IA) | Traer, IA | 65 MWh | Dec 1962 | Dec 2025 |
Distillate Fuel Oil : 98.5%
Natural Gas : 1.5%
|
| Marion | Southern Illinois Power Coop | Marion, IL | 798 GWh | May 1963 | May 2026 |
Bituminous Coal : 86.6%
Natural Gas : 12.8%
Distillate Fuel Oil : 0.6%
|
| Litchfield | Litchfield Public Utilities | Litchfield, MN | 861 MWh | Aug 1963 | Dec 2025 |
Distillate Fuel Oil : 54.6%
Natural Gas : 45.4%
|
| Streeter Station | Cedar Falls Utilities | Cedar Falls, IA | 8 GWh | Aug 1963 | Dec 2024 |
Natural Gas : 94.0%
Bituminous Coal : 6.0%
|
| Osage (IA) | City of Osage - (IA) | Osage, IA | 5 GWh | Aug 1963 | Dec 2025 |
Wind : 81.8%
Solar : 18.2%
|
| Grundy Center City Light Plant | Grundy Center Mun Light & Power | Grundy Center, IA | 109 MWh | Oct 1963 | Dec 2025 |
Distillate Fuel Oil
|
| Grantsburg Diesel | Northwestern Wisconsin Elec Co | Grantsburg, WI | 26 MWh | Nov 1963 | Dec 2025 |
Distillate Fuel Oil
|
| Plant 31 Paper Mill | Graphic Packaging International | West Monroe, LA | 515 GWh | Dec 1963 | Dec 2025 |
Natural Gas : 62.4%
Black Liquor : 25.3%
Wood/Wood Waste Solids : 12.3%
|
| Story City | City of Story City - (IA) | Story City, IA | 315 MWh | Dec 1963 | Dec 2025 |
Distillate Fuel Oil : 87.0%
Natural Gas : 13.0%
|
| George Neal North | MidAmerican Energy Co | Sergeant Bluff, IA | 2 TWh | Apr 1964 | May 2026 |
Subbituminous Coal : 98.8%
Natural Gas : 1.2%
|
| Carlyle | City of Carlyle - (IL) | Carlyle, IL | 208 MWh | Jul 1964 | Dec 2025 |
Distillate Fuel Oil
|
| Nine Springs | Madison Gas & Electric Co | Madison, WI | 89 MWh | Nov 1964 | Dec 2025 |
Natural Gas
|
| Hibbing | Hibbing Public Utilities Comm | Hibbing, MN | 40 GWh | Mar 1965 | Dec 2025 |
Natural Gas : 52.2%
Wood/Wood Waste Solids : 46.4%
Bituminous Coal : 1.4%
|
| D G Hunter | City of Alexandria - (LA) | Alexandria, LA | 91 GWh | Apr 1965 | Dec 2025 |
Natural Gas
|
| American Crystal Sugar Drayton | American Crystal Sugar Co | Drayton, ND | 43 GWh | Aug 1965 | Dec 2025 |
Subbituminous Coal
|
| Sam Rayburn Dam | USACE-Fort Worth District | Jasper, TX | 208 GWh | Aug 1965 | Dec 2025 |
Water
|
| T B Simon Power Plant | Michigan State University | East Lansing, MI | 263 GWh | Nov 1965 | May 2026 |
Natural Gas
|
| New Lisbon | City of New Lisbon (WI) | New Lisbon, WI | 55 MWh | Dec 1965 | Dec 2025 |
Distillate Fuel Oil
|
| ExxonMobil Beaumont Refinery | ExxonMobil Oil Corp | Beaumont, TX | 4 TWh | Dec 1965 | May 2026 |
Natural Gas : 96.6%
Other Gas : 3.4%
|
