Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Oak Bluffs Diesel Generating Facility | Vineyard Reliability LLC | Oak Bluffs, MA | ISO New England (ISNE) | 2.1 GWh | Dec 1968 | Dec 2024 | Distillate Fuel Oil |
| South Oak Creek | Wisconsin Electric Power Co | Oak Creek, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.2 TWh | Nov 1959 | May 2025 | Subbituminous Coal : 99.7% |
| MMSD South Shore Wastewater | Milwaukee Metro Sewerage Dist | Oak Creek, WI | Midcontinent Independent System Operator, Inc. (MISO) | 26.3 GWh | Jul 2000 | Dec 2024 | Other Biomass Gas : 88.7% Natural Gas : 11.3% |
| Elm Road Generating Station | Wisconsin Electric Power Co | Oak Creek, WI | Midcontinent Independent System Operator, Inc. (MISO) | 7.8 TWh | Jan 2010 | May 2025 | Subbituminous Coal : 73.5% Bituminous Coal : 19.3% Natural Gas : 7.2% |
| IKEA Oak Creek Rooftop PV System | IKEA Property Inc | Oak Creek, WI | Midcontinent Independent System Operator, Inc. (MISO) | 1.4 GWh | May 2018 | Dec 2024 | Solar |
| Eastern Shore Solar, LLC | Dominion Renewable Energy | Oak Hall, VA | PJM Interconnection, LLC (PJM) | 148.2 GWh | Sep 2016 | May 2025 | Solar |
| Davis Besse | Energy Harbor Nuclear Generation LLC | Oak Harbor, OH | PJM Interconnection, LLC (PJM) | 8.0 TWh | Oct 1977 | May 2025 | Nuclear |
| Allen S King | Northern States Power Co - Minnesota | Oak Park Heights, MN | Midcontinent Independent System Operator, Inc. (MISO) | 579.1 GWh | Feb 1958 | May 2025 | Subbituminous Coal : 99.5% |
| Oak Ridge Solar | AES Clean Energy | Oak Ridge, LA | Midcontinent Independent System Operator, Inc. (MISO) | 444.4 GWh | Nov 2023 | May 2025 | Solar |
| Fisher Solar Farm - NC | Strata Manager, LLC | Oakboro, NC | Duke Energy Carolinas (DUK) | 9.1 GWh | Sep 2015 | Dec 2024 | Solar |
| Robert O Schulz Solar Farm | South San Joaquin Irr District | Oakdale, CA | California Independent System Operator (CISO) | 2.1 GWh | Apr 2008 | Dec 2024 | Solar |
| Palouse | Onward Energy | Oakesdale, WA | Avista Corporation (AVA) | 325.9 GWh | Nov 2012 | Dec 2024 | Wind |
| US Gypsum Oakfield | U S Gypsum Co | Oakfield, NY | New York Independent System Operator (NYIS) | 15.8 GWh | Mar 1986 | Dec 2023 | Natural Gas |
| Dynegy Oakland Power Plant | Dynegy Oakland, LLC | Oakland, CA | California Independent System Operator (CISO) | 2.7 GWh | Oct 1978 | May 2025 | Jet Fuel |
| Power Generation Station (PGS) 2 | East Bay Municipal Util Dist | Oakland, CA | California Independent System Operator (CISO) | 16.5 GWh | Nov 2011 | Dec 2024 | Other Biomass Gas |
| WWTP Power Generation Station | East Bay Municipal Util Dist | Oakland, CA | California Independent System Operator (CISO) | 28.9 GWh | Jul 1985 | May 2025 | Other Biomass Gas : 98.8% Distillate Fuel Oil : 1.2% |
| Messalonskee 3 | Messalonskee Stream Hydro LLC | Oakland, ME | ISO New England (ISNE) | 6.5 GWh | Dec 1917 | Dec 2024 | Water |
| Messalonskee 2 (Oakland) | Messalonskee Stream Hydro LLC | Oakland, ME | ISO New England (ISNE) | 10.8 GWh | Dec 1923 | Dec 2024 | Water |
| Solar Mule, LLC | Solar Mule, LLC | Oakland, ME | ISO New England (ISNE) | 2.0 GWh | Aug 2017 | Dec 2024 | Solar |
| North Bridgton | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 8.4 GWh | Oct 2022 | Dec 2024 | Solar |
| Oakland | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 9.0 GWh | Aug 2022 | Dec 2024 | Solar |
| Garrett County - DPU Treatment Plant | Tesla Inc. | Oakland, MD | PJM Interconnection, LLC (PJM) | 1.7 GWh | Apr 2017 | Dec 2024 | Solar |
| Fair Wind | Fair Wind Power Partners, LLC | Oakland, MD | PJM Interconnection, LLC (PJM) | 90.6 GWh | Oct 2015 | May 2025 | Wind |
| Deep Creek | BP Piney & Deep Creek LLC | Oakland, MD | PJM Interconnection, LLC (PJM) | 17.1 GWh | Jun 1925 | Dec 2024 | Water |
| Roth Rock North Wind Farm, LLC | Roth Rock Wind Farm LLC | Oakland, MD | PJM Interconnection, LLC (PJM) | 27.2 GWh | Jul 2011 | May 2025 | Wind |
| Criterion | Criterion Power Partners LLC | Oakland, MD | PJM Interconnection, LLC (PJM) | 256.0 GWh | Nov 2010 | May 2025 | Wind |
| Roth Rock Wind Farm LLC | Roth Rock Wind Farm LLC | Oakland, MD | PJM Interconnection, LLC (PJM) | 108.7 GWh | Jul 2011 | May 2025 | Wind |
| Oakley Solar Project | Oakley Solar Project LLC | Oakley, CA | California Independent System Operator (CISO) | 2.4 GWh | May 2013 | Dec 2023 | Solar |
| CSD 2- Freedom High | CleanCapital Holdings | Oakley, CA | California Independent System Operator (CISO) | 1.4 GWh | Jul 2013 | Dec 2024 | Solar |
| California PV Energy at ISD WWTP | California PV Energy LLC | Oakley, CA | California Independent System Operator (CISO) | 2.0 GWh | Jul 2014 | Dec 2024 | Solar |
| Western Plains Wind | Western Plains Wind, LLC | Oakley, KS | Southwest Power Pool (SWPP) | 12.2 GWh | Sep 2021 | Dec 2024 | Wind |
| Hills Creek | USACE Northwestern Division | Oakridge, OR | Bonneville Power Administration (BPAT) | 119.8 GWh | Jan 1962 | Dec 2024 | Water |
| Mammoth Plains | Mammoth Plains Wind Project | Oakwood, OK | Southwest Power Pool (SWPP) | 719.9 GWh | Nov 2014 | Dec 2024 | Wind |
| North Road Peak | City of Orangeburg - (SC) | Oangeburg, SC | Dominion Energy South Carolina, Inc. (SCEG) | 475.0 MWh | Mar 1987 | Dec 2024 | Distillate Fuel Oil |
| Oberlin (KS) | City of Oberlin - (KS) | Oberlin, KS | Southwest Power Pool (SWPP) | 11.8 MWh | Dec 1953 | Dec 2024 | Distillate Fuel Oil |
| Oberlin (OH) | City of Oberlin - (OH) | Oberlin, OH | PJM Interconnection, LLC (PJM) | 634.0 MWh | Dec 1947 | Dec 2024 | Natural Gas : 87.7% Distillate Fuel Oil : 12.3% |
| Oberlin Spear Point Solar One | Oberlin College | Oberlin, OH | PJM Interconnection, LLC (PJM) | 2.7 GWh | Oct 2012 | Dec 2024 | Solar |
| OETN1 | OE_TN1 | Obion, TN | Tennessee Valley Authority (TVA) | 165.3 GWh | Feb 2023 | May 2025 | Solar |
| G2 Energy Marion LLC | G2 Energy LLC | Ocala, FL | Duke Energy Florida, Inc. (FPC) | 8.7 GWh | Dec 2008 | Dec 2023 | Landfill Gas |
| GEN005 Antibody Fuel Cell | 2016 ESA Project Company, LLC | Oceanside, CA | California Independent System Operator (CISO) | 20.6 GWh | Mar 2019 | Dec 2024 | Natural Gas |
| Genentech-Oceanside Hybrid | Tesla Inc. | Oceanside, CA | California Independent System Operator (CISO) | 3.6 GWh | Mar 2016 | Dec 2024 | Solar |
| Gilead Oceanside Solar Project | Gilead Sciences Inc. | Oceanside, CA | California Independent System Operator (CISO) | 2.3 GWh | Nov 2021 | Dec 2023 | Solar |
| Mount Sinai South Nassau Hospital | Mount Sinai South Nassau Hospital | Oceanside, NY | New York Independent System Operator (NYIS) | 10.8 MWh | Dec 1974 | Dec 2024 | Distillate Fuel Oil |
| Oil Dri 2 Solar | Westbound Solar LLC | Ochlocknee, GA | Southern Company Services, Inc. - Trans (SOCO) | 2.9 GWh | Apr 2019 | Dec 2024 | Solar |
| Oconto Falls Lower | Eagle Creek Renewable Energy, LLC | Oconto Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 6.9 GWh | Dec 1970 | Dec 2024 | Water |
| Stiles | Oconto Electric Cooperative | Oconto Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 5.6 GWh | Feb 1949 | Dec 2024 | Water |
| Oconto Falls Upper | Eagle Creek Renewable Energy, LLC | Oconto Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 6.5 GWh | Dec 1917 | Dec 2024 | Water |
| Seville 1 | Duke Energy Renewables Services | Ocotillo Wells, CA | Imperial Irrigation District (IID) | 54.1 GWh | Nov 2015 | Dec 2024 | Solar |
| Seville 2 | Duke Energy Renewables Services | Ocotillo Wells, CA | Imperial Irrigation District (IID) | 77.5 GWh | Nov 2015 | Dec 2024 | Solar |
| Ocotillo Express LLC | Pattern Operators LP | Ocotillo, CA | California Independent System Operator (CISO) | 498.3 GWh | Nov 2012 | May 2025 | Wind |
| Richland | Interstate Power and Light Co | Odebolt, IA | Midcontinent Independent System Operator, Inc. (MISO) | 507.9 GWh | Aug 2020 | May 2025 | Wind |
| Streator Cayuga Ridge South | Avangrid Power LLC | Odell, IL | PJM Interconnection, LLC (PJM) | 705.6 GWh | Feb 2010 | May 2025 | Wind |
| Quail Run Energy Center | Quail Run Energy Partners, LP | Odessa, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 3.1 TWh | Apr 2002 | Dec 2024 | Natural Gas |
| Odessa-Ector Power Plant | LaFrontera Holdings LLC | Odessa, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 7.9 TWh | Jun 2001 | May 2025 | Natural Gas |
| Westover | Power Depot Group A, LLC | Odessa, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 185.0 MWh | Aug 2013 | Dec 2024 | Distillate Fuel Oil |
| N. Mary Francis | Power Depot Group A, LLC | Odessa, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 216.0 MWh | Jul 2013 | Dec 2024 | Distillate Fuel Oil |
| Oberon IB | Oberon Solar IB | Odessa, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 58.3 GWh | Jun 2020 | May 2025 | Solar |
| Oberon IA | Oberon Solar IA | Odessa, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 284.7 GWh | Jun 2020 | May 2025 | Solar |
| Kingsley | Central Nebraska Pub P&I Dist | Ogallala, NE | Southwest Power Pool (SWPP) | 48.0 GWh | Oct 1984 | Dec 2024 | Water |
| Ogden | City of Ogden - (IA) | Ogden, IA | Midcontinent Independent System Operator, Inc. (MISO) | 10.0 MWh | Jun 1951 | Dec 2024 | Distillate Fuel Oil |
| Beaver Creek Wind | MidAmerican Energy Co | Ogden, IA | Midcontinent Independent System Operator, Inc. (MISO) | 1.4 TWh | Nov 2017 | May 2025 | Wind |
| Washington St Community Solar Farm #3 | Generate Capital | Ogden, NY | New York Independent System Operator (NYIS) | 3.7 GWh | Mar 2020 | Dec 2024 | Solar |
| Washington St Community Solar Farm #4 | Generate Capital | Ogden, NY | New York Independent System Operator (NYIS) | 2.3 GWh | Jan 2020 | Dec 2024 | Solar |
| Washington St Community Solar Farm #1 | Generate Capital | Ogden, NY | New York Independent System Operator (NYIS) | 3.2 GWh | Jan 2020 | Dec 2024 | Solar |
| Whittier | Solar Planet Power | Ogden, NY | New York Independent System Operator (NYIS) | 2.4 GWh | Feb 2019 | Dec 2024 | Solar |
| Pioneer | PacifiCorp | Ogden, UT | PacifiCorp East (PACE) | 18.3 GWh | May 1910 | Dec 2024 | Water |
| Pine View Dam | City of Bountiful | Ogden, UT | PacifiCorp East (PACE) | 6.2 GWh | May 1991 | Oct 2024 | Water |
| Ogdensburg | Ampersand Ogdensburg Hydro, LLC | Ogdensburg, NY | New York Independent System Operator (NYIS) | 4.0 GWh | Nov 1987 | Dec 2023 | Water |
| CES Heuvelton | Heuvelton Solar, LLC | Ogdensburg, NY | New York Independent System Operator (NYIS) | 1.9 GWh | Aug 2024 | Dec 2024 | Solar |
| Ogema | Greenbacker Renewable Energy Corporation | Ogema, WI | Midcontinent Independent System Operator, Inc. (MISO) | 2.1 GWh | Feb 2024 | Dec 2024 | Solar |
| Flint River Operations | International Paper - Flint River Mill | Oglethorpe, GA | Southern Company Services, Inc. - Trans (SOCO) | 433.9 GWh | Nov 1980 | Dec 2024 | Black Liquor : 78.2% Wood/Wood Waste Solids : 15.2% Natural Gas : 6.6% |
| H Neely Henry Dam | Alabama Power Co | Ohatchee, AL | Southern Company Services, Inc. - Trans (SOCO) | 179.9 GWh | May 1966 | Dec 2024 | Water |
| Big Sky Wind LLC | Big Sky Wind LLC | Ohio, IL | PJM Interconnection, LLC (PJM) | 730.9 GWh | Jan 2011 | Dec 2024 | Wind |
| Somerset Windpower LLC | Sequitur Renewables, LLC | Ohiopyle, PA | PJM Interconnection, LLC (PJM) | 6.3 GWh | Nov 2001 | May 2025 | Wind |
| Whitetail | Whitetail Wind Energy, LLC | Oilton, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 170.4 GWh | Nov 2012 | Dec 2024 | Wind |
| Covanta Lake County Energy | Covanta Lake Inc | Okahumpka, FL | Duke Energy Florida, Inc. (FPC) | 86.0 GWh | Aug 1990 | May 2025 | Non-biogenic Municipal Solid Waste : 54.7% Biogenic Municipal Solid Waste : 44.8% Natural Gas : 0.5% |
| Lakeside Solar Center | Florida Power & Light Co | Okeechobee, FL | Florida Power & Light Co. (FPL) | 140.2 GWh | Nov 2020 | May 2025 | Solar |
| Okeechobee Clean Energy Center | Florida Power & Light Co | Okeechobee, FL | Florida Power & Light Co. (FPL) | 11.3 TWh | Feb 2019 | May 2025 | Natural Gas |
| FPL Cavendish Solar Energy Center | Florida Power & Light Co | Okeechobee, FL | Florida Power & Light Co. (FPL) | 116.4 GWh | Dec 2022 | May 2025 | Solar |
| Bluefield Preserve Solar | Florida Power & Light Co | Okeechobee, FL | Florida Power & Light Co. (FPL) | 147.1 GWh | Dec 2022 | May 2025 | Solar |
| Tinker | Oklahoma Gas & Electric Co | Oklahoma City, OK | Southwest Power Pool (SWPP) | 30.7 GWh | May 1971 | Dec 2024 | Natural Gas |
| Frontier | Oklahoma Gas & Electric Co | Oklahoma City, OK | Southwest Power Pool (SWPP) | 642.3 GWh | Aug 1989 | May 2025 | Natural Gas |
| Mustang | Oklahoma Gas & Electric Co | Oklahoma City, OK | Southwest Power Pool (SWPP) | 531.6 GWh | Apr 1950 | May 2025 | Natural Gas : 99.1% Solar : 0.9% |
| Electra Wind Farm | Electra Wind, LLC | Oklaunion, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 828.7 GWh | Oct 2016 | Dec 2024 | Wind |
| Munro Valley Solar | Ecos Energy LLC | Olancha, CA | California Independent System Operator (CISO) | 10.7 GWh | Sep 2016 | Dec 2024 | Solar |
| Owens Valley Solar Project 11 | Los Angeles Department of Water & Power | Olancha, CA | Los Angeles Department of Water and Power (LDWP) | 3.0 GWh | Nov 2016 | Dec 2024 | Solar |
| Haiwee | Los Angeles Department of Water & Power | Olancha, CA | Los Angeles Department of Water and Power (LDWP) | 5.1 GWh | Jun 1927 | Dec 2024 | Water |
| Bani Solar | Bani Solar, LLC | Olanta, SC | Duke Energy Progress East (CPLE) | 4.4 GWh | Jan 2021 | Dec 2024 | Solar |
| Ash Mesa Solar, LLC | Ash Mesa Solar, LLC | Olathe, CO | Public Service Company of Colorado (PSCO) | 19.3 GWh | May 2022 | Dec 2024 | Solar |
| Old Bridge Global Landfill CSG | NJR Clean Energy Ventures Corporation | Old Bridge, NJ | PJM Interconnection, LLC (PJM) | 3.6 GWh | Sep 2023 | Dec 2024 | Solar |
| Old Bridge Solar Farm | NJR Clean Energy Ventures Corporation | Old Bridge, NJ | PJM Interconnection, LLC (PJM) | 13.5 GWh | Jul 2018 | Dec 2024 | Solar |
| Sweeny Cogen Facility | Sweeny Cogeneration LLC | Old Ocean, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 3.2 TWh | Jul 1997 | May 2025 | Natural Gas : 70.5% Other Gas : 29.5% |
| Stillwater B | Brookfield Black Bear Hydro, LLC | Old Town, ME | ISO New England (ISNE) | 10.5 GWh | Aug 2013 | Dec 2024 | Water |
| Lockheed Martin Solar System | Lockheed Martin Solar System | Oldsmar, FL | Duke Energy Florida, Inc. (FPC) | 2.9 GWh | Aug 2015 | Dec 2024 | Solar |
| Albeni Falls | USACE Northwestern Division | Oldtown, ID | Bonneville Power Administration (BPAT) | 179.3 GWh | Apr 1955 | Dec 2024 | Water |
| Indeck Olean Energy Center | Indeck-Olean Ltd Partnership | Olean, NY | New York Independent System Operator (NYIS) | 34.5 GWh | Dec 1993 | Dec 2024 | Natural Gas |
| River Valley LLC (NY) (CSG) | Nautilus Solar Solutions | Olean, NY | New York Independent System Operator (NYIS) | 7.4 GWh | Nov 2021 | Dec 2024 | Solar |
| Rowe (CSG) | AES Distributed Energy | Olean, NY | ISO New England (ISNE) | 7.6 GWh | Oct 2021 | Dec 2024 | Solar |
| Homer Street East | CleanCapital Holdings | Olean, NY | New York Independent System Operator (NYIS) | 2.0 GWh | Apr 2019 | Dec 2024 | Solar |
| Homer Street West | CleanCapital Holdings | Olean, NY | New York Independent System Operator (NYIS) | 2.1 GWh | Apr 2019 | Dec 2024 | Solar |
Summary of Power Plants By State
Figures are based on May 2025 generation numbers.| State | Rank | Active Plants | May 2025 Generation |
|---|---|---|---|
| Alabama | # 7 | 75 | 11,300.49 GWh |
| Alaska | # 48 | 142 | 475.90 GWh |
| Arizona | # 11 | 176 | 9,204.37 GWh |
| Arkansas | # 25 | 99 | 5,005.01 GWh |
| California | # 4 | 1,667 | 17,300.59 GWh |
| Colorado | # 28 | 290 | 4,508.30 GWh |
| Connecticut | # 38 | 162 | 2,580.83 GWh |
| Delaware | # 50 | 32 | 189.30 GWh |
| District of Columbia | # 51 | 16 | 14.93 GWh |
| Florida | # 2 | 317 | 24,888.07 GWh |
| Georgia | # 6 | 248 | 11,990.59 GWh |
| Hawaii | # 47 | 68 | 737.15 GWh |
| Idaho | # 42 | 145 | 1,633.17 GWh |
| Illinois | # 5 | 358 | 14,860.85 GWh |
| Indiana | # 17 | 210 | 7,386.37 GWh |
| Iowa | # 22 | 294 | 5,142.65 GWh |
| Kansas | # 24 | 181 | 5,016.68 GWh |
| Kentucky | # 21 | 58 | 5,314.31 GWh |
| Louisiana | # 14 | 83 | 8,104.32 GWh |
| Maine | # 45 | 208 | 1,219.14 GWh |
| Maryland | # 33 | 198 | 3,211.24 GWh |
| Massachusetts | # 43 | 624 | 1,590.93 GWh |
| Michigan | # 12 | 269 | 9,081.28 GWh |
| Minnesota | # 29 | 765 | 4,142.68 GWh |
| Mississippi | # 20 | 56 | 5,397.23 GWh |
| Missouri | # 23 | 121 | 5,122.89 GWh |
| State | Rank | Active Plants | May 2025 Generation |
|---|---|---|---|
| Montana | # 40 | 70 | 1,958.99 GWh |
| Nebraska | # 37 | 127 | 2,880.69 GWh |
| Nevada | # 30 | 110 | 4,010.09 GWh |
| New Hampshire | # 44 | 56 | 1,548.73 GWh |
| New Jersey | # 31 | 385 | 3,877.07 GWh |
| New Mexico | # 32 | 139 | 3,225.41 GWh |
| New York | # 10 | 929 | 10,057.90 GWh |
| North Carolina | # 9 | 909 | 10,631.50 GWh |
| North Dakota | # 35 | 57 | 3,062.36 GWh |
| Ohio | # 8 | 197 | 11,259.64 GWh |
| Oklahoma | # 18 | 139 | 6,659.06 GWh |
| Oregon | # 27 | 272 | 4,712.75 GWh |
| Pennsylvania | # 3 | 255 | 19,165.18 GWh |
| Rhode Island | # 46 | 97 | 795.05 GWh |
| South Carolina | # 13 | 200 | 8,379.29 GWh |
| South Dakota | # 41 | 52 | 1,667.11 GWh |
| Tennessee | # 19 | 86 | 5,858.87 GWh |
| Texas | # 1 | 890 | 49,337.47 GWh |
| Utah | # 39 | 122 | 2,500.89 GWh |
| Vermont | # 49 | 117 | 233.21 GWh |
| Virginia | # 16 | 233 | 7,447.37 GWh |
| Washington | # 15 | 134 | 7,969.22 GWh |
| West Virginia | # 34 | 39 | 3,129.59 GWh |
| Wisconsin | # 26 | 244 | 4,882.66 GWh |
| Wyoming | # 36 | 73 | 3,035.08 GWh |