| Castle Rock | Wisconsin River Power Company | Adams, WI | 92 GWh | Jul 1950 | Dec 2024 |
Water
|
| Noblesville | Duke Energy Indiana, LLC | Noblesville, IN | 2 TWh | Aug 1950 | Dec 2024 |
Natural Gas
|
| Wells IC | City of Wells - (MN) | Wells, MN | 180 MWh | Oct 1950 | Dec 2024 |
Natural Gas : 64.3%
Distillate Fuel Oil : 35.7%
|
| Flambeau Hydroelectric Station | Dairyland Power Coop | Ladysmith, WI | 62 GWh | Dec 1950 | Dec 2024 |
Water
|
| Rantoul | Village of Rantoul - (IL) | Rantoul, IL | 200 MWh | Dec 1950 | Sep 2025 |
Distillate Fuel Oil
|
| Franklin Heating Station | Franklin Heating Station | Rochester, MN | 67 GWh | Dec 1950 | Sep 2025 |
Natural Gas : 79.1%
Purchased Steam : 19.3%
Distillate Fuel Oil : 1.6%
|
| Battle Creek Mill | RockTenn-Battle Creek Mill | Battle Creek, MI | 4 GWh | Dec 1950 | Dec 2024 |
Natural Gas
|
| Kaukauna Paper Mill | Thilmany LLC | Kaukauna, WI | 107 GWh | Dec 1950 | Sep 2025 |
Natural Gas : 54.2%
Black Liquor : 45.8%
|
| CII Carbon LLC | CII Carbon LLC | Chalmette, LA | 8 GWh | Dec 1950 | Jun 2024 |
Waste Heat
|
| Elk River | Great River Energy | Elk River, MN | 73 GWh | Dec 1950 | Sep 2025 |
Natural Gas : 99.1%
Distillate Fuel Oil : 0.9%
|
| Summit Lake | Central Iowa Power Cooperative | Creston, IA | 70 GWh | Feb 1951 | Dec 2024 |
Natural Gas : 99.9%
|
| Farmer City | City of Farmer City - (IL) | Farmer City, IL | 50 MWh | Mar 1951 | Dec 2024 |
Distillate Fuel Oil
|
| Cascade | Cascade Municipal Utilities | Cascade, IA | 73 MWh | Mar 1951 | Dec 2024 |
Distillate Fuel Oil : 62.7%
Natural Gas : 37.3%
|
| Ogden | City of Ogden - (IA) | Ogden, IA | 10 MWh | Jun 1951 | Dec 2024 |
Distillate Fuel Oil
|
| Edgewater | Wisconsin Power & Light Co | Sheboygan, WI | 2 TWh | Jun 1951 | Sep 2025 |
Subbituminous Coal : 99.9%
|
| Rockford | City of Rockford- (IA) | Rockford, IA | 4 MWh | Jul 1951 | Dec 2024 |
Distillate Fuel Oil
|
| Louisiana 1 | Entergy Louisiana LLC | Baton Rouge, LA | 3 TWh | Sep 1951 | Sep 2025 |
Natural Gas : 71.5%
Other Gas : 28.5%
|
| Eagle Valley (IN) | AES Indiana | Martinsville, IN | 6 TWh | Nov 1951 | Sep 2025 |
Natural Gas
|
| Alpena Cement Plant | Lafarge Corp | Alpena, MI | 177 GWh | Dec 1951 | Sep 2025 |
Petroleum Coke : 83.7%
Natural Gas : 16.3%
|
| Spring Valley | Spring Valley Pub Utils Comm | Spring Valley, MN | 157 MWh | Dec 1951 | Dec 2024 |
Distillate Fuel Oil : 78.5%
Natural Gas : 21.5%
|
| Fennimore | City of Fennimore - (WI) | Fennimore, WI | 27 MWh | Jan 1952 | Dec 2024 |
Distillate Fuel Oil
|
| Lake Crystal | City of Lake Crystal - (MN) | Lake Crystal, MN | 20 MWh | Apr 1952 | Dec 2024 |
Distillate Fuel Oil
|
| Moose Lake | Moose Lake Water & Light Comm | Moose Lake, MN | 63 MWh | Oct 1952 | Dec 2024 |
Distillate Fuel Oil : 83.7%
Natural Gas : 16.3%
|
| Cargill Corn Milling Division | Cargill Inc North America Sweetners | Eddyville, IA | 110 GWh | Nov 1952 | Dec 2024 |
Natural Gas
|
| Westrock Hodge (LA) | Westrock (LA) | Hodge, LA | 466 GWh | Nov 1952 | Dec 2024 |
Black Liquor : 50.4%
Natural Gas : 35.5%
Wood/Wood Waste Solids : 14.2%
|
| Michigamme Falls | Wisconsin Electric Power Co | Crystal Falls, MI | 23 GWh | May 1953 | Dec 2024 |
Water
|
| Syl Laskin | ALLETE, Inc. | Hoyt Lakes, MN | 172 GWh | May 1953 | Dec 2024 |
Natural Gas
|
| Princeton (IL) | City of Princeton - (IL) | Princeton, IL | 434 MWh | Jun 1953 | Dec 2024 |
Natural Gas : 99.8%
|
| Teche | Cleco Power LLC | Baldwin, LA | 21 GWh | Jun 1953 | Dec 2024 |
Natural Gas
|
| St Clair | DTE Electric Company | East China Twp, MI | 4 GWh | Jul 1953 | Sep 2025 |
Natural Gas
|
| Hemlock Falls | Wisconsin Electric Power Co | Crystal Falls, MI | 6 GWh | Jul 1953 | Dec 2024 |
Water
|
| Princeton (MN) | Princeton Public Utils Comm | Princeton, MN | 134 MWh | Aug 1953 | Dec 2024 |
Distillate Fuel Oil
|
| Breese | City of Breese - (IL) | Breese, IL | 263 MWh | Nov 1953 | Dec 2024 |
Distillate Fuel Oil
|
| Wabash Valley Power IGCC | Wabash Valley Power Assn, Inc | Terre Haute, IN | 340 GWh | Nov 1953 | Sep 2025 |
Natural Gas
|
| Consumer Operations LLC | Georgia-Pacific Consumer Oper. Green Bay LLC | Green Bay, WI | 235 GWh | Dec 1953 | Sep 2025 |
Natural Gas
|
| Walter Scott Jr Energy Center | MidAmerican Energy Co | Council Bluffs, IA | 6 TWh | Feb 1954 | Sep 2025 |
Subbituminous Coal : 98.9%
Distillate Fuel Oil : 0.9%
|
| Mountain Lake | City of Mountain Lake - (MN) | Mountain Lake, MN | 2 GWh | Apr 1954 | Dec 2024 |
Wind : 97.7%
Natural Gas : 1.8%
|
| 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 | 43 GWh | Aug 1954 | Dec 2024 |
Subbituminous Coal
|
| Black Dog | Northern States Power Co - Minnesota | Burnsville, MN | 2 TWh | Sep 1954 | Dec 2024 |
Natural Gas
|
| Hennepin Island | Northern States Power Co - Minnesota | Minneapolis, MN | 47 GWh | Sep 1954 | Dec 2024 |
Water
|
| R M Heskett | Montana-Dakota Utilities Co | Mandan, ND | 57 GWh | Oct 1954 | Sep 2025 |
Natural Gas
|
| Weston | Wisconsin Public Service Corp | Rothschild, WI | 5 TWh | Nov 1954 | Sep 2025 |
Subbituminous Coal : 99.5%
Natural Gas : 0.5%
|
| West Bend | City of West Bend | West Bent, IA | 174 MWh | Nov 1954 | Dec 2024 |
Distillate Fuel Oil
|
| Janesville | City of Janesville - (MN) | Janesville, MN | 20 MWh | Apr 1955 | Dec 2024 |
Distillate Fuel Oil : 97.0%
Natural Gas : 3.0%
|
| Manitowoc | Manitowoc Public Utilities | Manitowoc, WI | 179 GWh | May 1955 | Sep 2025 |
Wood/Wood Waste Solids : 91.2%
Petroleum Coke : 4.8%
Bituminous Coal : 3.6%
|
| Blakely Mountain | USCE -Vickburg District | Royal, AR | 158 GWh | Aug 1955 | Dec 2024 |
Water
|
| Nine Mile Point | Entergy Louisiana LLC | Westwego, LA | 8 TWh | Oct 1955 | Sep 2025 |
Natural Gas
|
| Dafter | Cloverland Electric Co-op | Dafter, MI | 3 GWh | Oct 1955 | Dec 2024 |
Distillate Fuel Oil
|
| Tipton | City of Tipton - (IA) | Tipton, IA | 69 MWh | Oct 1955 | Dec 2024 |
Distillate Fuel Oil
|
| Lake Mills | City of Lake Mills | Lake Mills, IA | 38 MWh | Dec 1955 | Dec 2024 |
Distillate Fuel Oil
|
| Winterset | City of Winterset - (IA) | Winterset, IA | 35 MWh | Jun 1956 | Dec 2024 |
Natural Gas : 55.9%
Distillate Fuel Oil : 44.1%
|
| Sumner | City of Sumner - (IA) | Sumner, IA | 175 MWh | Jul 1956 | Dec 2024 |
Distillate Fuel Oil
|
| Willmar | Willmar Municipal Utilities | Willmar, MN | 5 GWh | Aug 1956 | Jul 2024 |
Wind
|
| New Ulm | New Ulm Public Utilities Comm | New Ulm, MN | 2 GWh | Dec 1956 | Dec 2024 |
Natural Gas : 95.4%
Distillate Fuel Oil : 4.6%
|
| Columbia (MO) | City of Columbia - (MO) | Columbia, MO | 22 GWh | Dec 1956 | Dec 2024 |
Landfill Gas : 63.9%
Natural Gas : 36.1%
|
| Blount Street | Madison Gas & Electric Co | Madison, WI | 49 GWh | May 1957 | Dec 2024 |
Natural Gas
|
| Glencoe | Glencoe Light & Power Comm | Glencoe, MN | 182 MWh | May 1957 | Dec 2024 |
Distillate Fuel Oil : 99.8%
|
| Motiva Enterprises Port Arthur Refinery | Motiva Enterprises LLC | Port Arthur, TX | 2 TWh | May 1957 | Sep 2025 |
Natural Gas : 90.8%
Other Gas : 9.2%
|
| Geneseo | City of Geneseo - (IL) | Geneseo, IL | 8 GWh | Jun 1957 | Sep 2025 |
Wind : 75.9%
Solar : 22.4%
|
| Graettinger | City of Graettinger - (IA) | Graettinger, IA | 59 MWh | Jul 1957 | Dec 2024 |
Distillate Fuel Oil
|
| Coggon | Coggon Municipal Light Plant | Coggon, IA | 8 MWh | Sep 1957 | Dec 2024 |
Distillate Fuel Oil
|
| Decorative Panels Intl | Decorative Panels International, Inc. | Alpena, MI | 43 GWh | Oct 1957 | Dec 2023 |
Natural Gas : 79.6%
Wood/Wood Waste Solids : 20.4%
|
| Menomonie | Northern States Power Co - Minnesota | Menomonie, WI | 24 GWh | Dec 1957 | Dec 2024 |
Water
|
| Hutchinson Plant #1 | Hutchinson Utilities Comm | Hutchinson, MN | 36 GWh | Dec 1957 | Dec 2024 |
Natural Gas
|
| 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 | 721 GWh | Feb 1958 | Sep 2025 |
Subbituminous Coal : 99.7%
|
| Muscatine Plant #1 | Board of Water Electric & Communications | Muscatine, IA | 724 GWh | Mar 1958 | Sep 2025 |
Subbituminous Coal : 99.7%
|
| Pine Bluff Mill | Suzano Packaging LLC | Pine Bluff, AR | 289 GWh | Apr 1958 | Dec 2023 |
Black Liquor : 80.1%
Natural Gas : 19.9%
|
| Harding Street | AES Indiana | Indianapolis, IN | 3 TWh | May 1958 | Sep 2025 |
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 | Sep 2025 |
Subbituminous Coal : 99.7%
|
| Waverly Municipal Electric North Plant | Waverly Municipal Elec Utility | Waverly, IA | 232 MWh | Jul 1958 | Dec 2024 |
Distillate Fuel Oil : 55.1%
Natural Gas : 44.9%
|
| Lewis & Clark | Montana-Dakota Utilities Co | Richland, MT | 8 GWh | Sep 1958 | Sep 2025 |
Natural Gas
|
| Prairie Creek | Interstate Power and Light Co | Cedar Rapids, IA | 86 GWh | Sep 1958 | Sep 2025 |
Subbituminous Coal : 64.8%
Natural Gas : 35.2%
|
| Vestaburg | Wolverine Power Supply Coop | Vestaburg, MI | 2 GWh | Dec 1958 | Dec 2024 |
Natural Gas
|
| R S Nelson | Entergy Louisiana LLC | Westlake, LA | 2 TWh | Jan 1959 | Sep 2025 |
Subbituminous Coal : 99.5%
|
| Red Bud | City of Red Bud - (IL) | Red Bud, IL | 121 MWh | Feb 1959 | Dec 2024 |
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 | 91 GWh | Oct 1959 | Sep 2025 |
Natural Gas : 93.0%
Residual Fuel Oil : 7.0%
|
| South Oak Creek | Wisconsin Electric Power Co | Oak Creek, WI | 2 TWh | Nov 1959 | Sep 2025 |
Subbituminous Coal : 99.7%
|
| Warrick | AGC Division of APGI Inc | Newburgh, IN | 3 TWh | Mar 1960 | Sep 2025 |
Bituminous Coal : 98.5%
Natural Gas : 1.5%
|
| Manistique | Cloverland Electric Co-op | Manistique, MI | 1 GWh | Jun 1960 | Dec 2024 |
Distillate Fuel Oil
|
| Iowa State University | Iowa State University | Ames, IA | 81 GWh | Sep 1960 | Sep 2025 |
Natural Gas
|
| 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 | 815 GWh | Feb 1961 | Sep 2025 |
Natural Gas
|
| Coughlin Power Station | Cleco Power LLC | St Landry, LA | 4 TWh | Mar 1961 | Sep 2025 |
Natural Gas
|
| MU Combined Heat and Power Plant | Curators of the University of Missouri | Columbia, MO | 196 GWh | Jun 1961 | Sep 2025 |
Natural Gas : 73.6%
Wood/Wood Waste Solids : 23.7%
Bituminous Coal : 2.6%
|
| Sabine | Entergy Texas Inc. | Orange, TX | 4 TWh | Dec 1961 | Sep 2025 |
Natural Gas
|
| Georgia-Pacific Crossett LLC | Georgia-Pacific Crossett LLC | Crossett, AR | 4 GWh | Apr 1962 | Jun 2024 |
Natural Gas
|
| J H Campbell | Consumers Energy Co - (MI) | West Olive, MI | 8 TWh | Sep 1962 | Sep 2025 |
Subbituminous Coal : 99.4%
|
| Marion | Southern Illinois Power Coop | Marion, IL | 762 GWh | May 1963 | Sep 2025 |
Bituminous Coal : 85.9%
Natural Gas : 14.0%
|
| Litchfield | Litchfield Public Utilities | Litchfield, MN | 143 MWh | Aug 1963 | Dec 2024 |
Natural Gas : 62.5%
Distillate Fuel Oil : 37.5%
|
| 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 | 6 GWh | Aug 1963 | Dec 2024 |
Wind : 81.2%
Solar : 18.8%
|
| Plant 31 Paper Mill | Graphic Packaging International | West Monroe, LA | 523 GWh | Dec 1963 | Dec 2024 |
Natural Gas : 63.2%
Black Liquor : 25.1%
Wood/Wood Waste Solids : 11.7%
|
| Story City | City of Story City - (IA) | Story City, IA | 97 MWh | Dec 1963 | Dec 2024 |
Distillate Fuel Oil : 89.6%
Natural Gas : 10.4%
|
| George Neal North | MidAmerican Energy Co | Sergeant Bluff, IA | 2 TWh | Apr 1964 | Sep 2025 |
Subbituminous Coal : 99.1%
Natural Gas : 0.9%
|
| Carlyle | City of Carlyle - (IL) | Carlyle, IL | 231 MWh | Jul 1964 | Dec 2024 |
Distillate Fuel Oil
|
| Nine Springs | Madison Gas & Electric Co | Madison, WI | 82 MWh | Nov 1964 | Dec 2024 |
Natural Gas
|
