Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Off Airport Road - West | Off Airport Road - West, LLC | Accord, NY | New York Independent System Operator (NYIS) | 6.7 GWh | Nov 2019 | Dec 2024 | Solar |
| Ohio Northern University Solar Site | AEP Onsite Partners, LLC | Ada, OH | PJM Interconnection, LLC (PJM) | 4.0 GWh | Nov 2016 | Sep 2025 | Solar |
| Oak Leaf Solar XXX LLC (CSG) | Greenbacker Renewable Energy Corporation | Alamosa, CO | Public Service Company of Colorado (PSCO) | 3.8 GWh | Nov 2018 | Dec 2024 | Solar |
| Otoe Solar Power Generation Station 1 LL | AES Distributed Energy | Apple Valley, CA | California Independent System Operator (CISO) | 3.4 GWh | Nov 2013 | Dec 2024 | Solar |
| Oak Grove Power Producers | Cube District Energy, LLC | Arcadia, KS | Southwest Power Pool (SWPP) | 8.2 GWh | Feb 2010 | Dec 2024 | Landfill Gas |
| Orion Solar II | Orion Solar II, LLC | Arvin, CA | California Independent System Operator (CISO) | 19.0 GWh | May 2014 | Dec 2024 | Solar |
| Orion Solar I | Orion Solar I LLC | Arvin, CA | California Independent System Operator (CISO) | 28.3 GWh | Mar 2014 | Dec 2024 | Solar |
| Old Cedar Solar Energy Storage | North Carolina El Member Corp | Asheboro, NC | Duke Energy Progress East (CPLE) | 1.8 GWh | Jul 2021 | Dec 2024 | Solar |
| Otter Creek Ethanol Poet - Ashton | Otter Creek Ethanol LLC - Poet Ashton | Ashton, IA | Midcontinent Independent System Operator, Inc. (MISO) | 43.5 GWh | Feb 2004 | Sep 2025 | Natural Gas |
| Osprey Energy Center Power Plant | Duke Energy Florida, LLC | Auburndale, FL | Tampa Electric Company (TEC) | 3.8 TWh | Apr 2004 | Sep 2025 | Natural Gas |
| OYA Church Road | OYA Church Road A LLC | Baldwinsville, NY | New York Independent System Operator (NYIS) | 8.2 GWh | Nov 2022 | Dec 2024 | Solar |
| Orange Cogeneration Facility | Northern Star Generation Services Co LLC | Bartow, FL | Duke Energy Florida, Inc. (FPC) | 387.5 GWh | Jan 1995 | Dec 2024 | Natural Gas |
| Orange Street G1 | Town of Bedford - (VA) | Bedford, VA | PJM Interconnection, LLC (PJM) | 168.0 MWh | Jun 2005 | Dec 2024 | Distillate Fuel Oil |
| Oak Point Cogen | Chevron Oronite Co LLC | Belle Chasse, LA | Midcontinent Independent System Operator, Inc. (MISO) | 99.2 GWh | Sep 1999 | Dec 2024 | Natural Gas |
| OSLH, LLC | OSLH, LLC | Bend, OR | PacifiCorp West (PACW) | 22.2 GWh | Nov 2016 | Dec 2024 | Solar |
| Ocoee 2 | Tennessee Valley Authority | Benton, TN | Tennessee Valley Authority (TVA) | 86.7 GWh | Sep 1913 | Dec 2024 | Water |
| Ocoee 1 | Tennessee Valley Authority | Benton, TN | Tennessee Valley Authority (TVA) | 69.2 GWh | Dec 1911 | Dec 2024 | Water |
| Ocoee 3 | Tennessee Valley Authority | Benton, TN | Tennessee Valley Authority (TVA) | 151.7 GWh | Mar 1943 | Dec 2024 | Water |
| Owens Corning at Bethlehem | Luminace Solar Holding, LLC | Bethlehem, NY | New York Independent System Operator (NYIS) | 2.7 GWh | Sep 2013 | Dec 2024 | Solar |
| Oak Glen Wind Farm | Minnesota Municipal Power Agny | Blooming Prairie, MN | Midcontinent Independent System Operator, Inc. (MISO) | 120.5 GWh | Oct 2011 | Dec 2024 | Wind |
| Old Mill Solar | Old Mill Solar | Bly, OR | PacifiCorp West (PACW) | 7.2 GWh | Nov 2015 | Dec 2024 | Solar |
| Oneida Herkimer | WM Renewable Energy LLC | Boonville, NY | New York Independent System Operator (NYIS) | 25.3 GWh | Mar 2012 | Dec 2024 | Landfill Gas |
| Ocotillo Wells | Conductive Power | Borrego Springs, CA | California Independent System Operator (CISO) | 108.6 GWh | Aug 2023 | Sep 2025 | Solar |
| OCI Alamo 4, LLC | Consolidated Edison Development Inc. | Brackettville, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 76.0 GWh | Jul 2014 | Dec 2024 | Solar |
| Onyx - Brockton Thatcher Landfill Solar | Onyx Asset Services Group | Brockton, MA | ISO New England (ISNE) | 5.1 GWh | Oct 2017 | Dec 2024 | Solar |
| Oneta Energy Center | Oneta Power LLC | Broken Arrow, OK | Southwest Power Pool (SWPP) | 5.1 TWh | Jun 2002 | Sep 2025 | Natural Gas |
| OTHERTexasA&M | Texas Microgrid, LLC | Bryan, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 1.3 GWh | Apr 2018 | Dec 2024 | Natural Gas |
| Orion III Solar Project | Ben Milam Solar 3 LLC | Buckholts, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 558.6 GWh | Jul 2024 | Sep 2025 | Solar |
| Osage Wind, LLC | Enel Green Power NA, Inc. | Burbank, OK | Associated Electric Cooperative, Inc. (AECI) | 549.0 GWh | May 2015 | Dec 2024 | Wind |
| Orion I Solar Project | Ben Milam Solar 1 LLC | Burlington, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 452.7 GWh | Jul 2024 | Sep 2025 | Solar |
| OE_GA3 | Onward Energy | Camilla, GA | Southern Company Services, Inc. - Trans (SOCO) | 126.6 GWh | Nov 2019 | Sep 2025 | Solar |
| Owlville Creek Solar 2, LLC | Owlville Creek Solar 2, LLC | Canastota, NY | New York Independent System Operator (NYIS) | 7.8 GWh | Nov 2020 | Dec 2024 | Solar |
| Owlville Creek Solar, LLC | Owlville Creek Solar, LLC | Canastota, NY | New York Independent System Operator (NYIS) | 8.4 GWh | Nov 2020 | Dec 2024 | Solar |
| OR - Solops - SPI 18 - Dover | Dover Solar, LLC | Canby, OR | Portland General Electric Company (PGE) | 567.0 MWh | Nov 2024 | Dec 2024 | Solar |
| Otarre Solar Park | TIG Sun Energy IV, LLC | Cayce, SC | Dominion Energy South Carolina, Inc. (SCEG) | 2.6 GWh | Nov 2017 | Dec 2024 | Solar |
| Orchard Park | Borough of Chambersburg | Chambersburg, PA | PJM Interconnection, LLC (PJM) | 41.0 GWh | Nov 2003 | Sep 2025 | Natural Gas : 94.9% Distillate Fuel Oil : 5.1% |
| Odyssey Energy Altura Cogen, LLC | Odyssey Operating Services | Channelview, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 3.7 TWh | Oct 1985 | Sep 2025 | Natural Gas |
| Orbit Energy Charlotte | Anaergia | Charlotte, NC | Duke Energy Carolinas (DUK) | 199.9 MWh | Oct 2016 | Dec 2024 | Other Biomass Gas |
| Otter Creek Solar | Dominion Energy Inc. | Chase City, VA | PJM Interconnection, LLC (PJM) | 131.2 GWh | Sep 2023 | Sep 2025 | Solar |
| Outback Solar At Christmas Valley | Outback Solar, LLC | Christmas Valley, OR | Bonneville Power Administration (BPAT) | 6.6 GWh | Sep 2012 | Dec 2024 | Solar |
| Oakfield Wind Project | Onward Energy | City of Oakfield, ME | ISO New England (ISNE) | 367.0 GWh | Sep 2015 | Sep 2025 | Wind |
| Old Catawba PV 1 | Ecoplexus, Inc | Claremont, NC | Duke Energy Carolinas (DUK) | 5.6 GWh | Nov 2015 | Dec 2024 | Solar |
| Oak Tree Energy | Consolidated Edison Development Inc. | Clark, SD | Southwest Power Pool (SWPP) | 69.4 GWh | Nov 2014 | Dec 2024 | Wind |
| Onondaga County - Metro Water Board | Tesla Inc. | Clay, NY | New York Independent System Operator (NYIS) | 1.1 GWh | Jan 2016 | Dec 2024 | Solar |
| Onondaga County - Oak Orchard WWTP | Tesla Inc. | Clay, NY | New York Independent System Operator (NYIS) | 2.5 GWh | Oct 2017 | Dec 2024 | Solar |
| Overhill Solar | Strata Manager, LLC | Clinton, NC | Duke Energy Carolinas (DUK) | 10.9 GWh | Feb 2022 | Dec 2024 | Solar |
| Oleander Power Project LP | Oleander Holdings LLC | Cocoa, FL | Florida Power & Light Co. (FPL) | 488.9 GWh | May 2002 | Dec 2024 | Natural Gas : 99.9% |
| Oliver Dam | Georgia Power Co | Columbus, GA | Southern Company Services, Inc. - Trans (SOCO) | 128.4 GWh | Jun 1959 | Dec 2024 | Water |
| Oxford Dam | Duke Energy Carolinas, LLC | Conover, NC | Duke Energy Carolinas (DUK) | 91.9 GWh | Mar 1928 | Dec 2024 | Water |
| OYA State Route 122 | OYA State Route 122, LLC | Constable, NY | New York Independent System Operator (NYIS) | 6.9 GWh | Nov 2021 | Dec 2024 | Solar |
| OCI Alamo 2, LLC | OCI Energy LLC | Converse, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 8.8 GWh | Feb 2014 | Dec 2024 | Solar |
| Orca | Cordova Electric Coop, Inc | Cordova, AK | 4.2 GWh | Sep 1984 | Dec 2024 | Distillate Fuel Oil | |
| Oregon State University Energy Center | Oregon State University | Corvallis, OR | Bonneville Power Administration (BPAT) | 38.7 GWh | May 2010 | Aug 2025 | Natural Gas |
| Oregon University System Rabbit Field | Tesla Inc. | Corvallis, OR | PacifiCorp West (PACW) | 1.2 GWh | Feb 2014 | Dec 2024 | Solar |
| Orange Coast College PH2 Solar Project | Solar Star Coastal Pirate, LLC | Costa Mesa, CA | California Independent System Operator (CISO) | 4.0 GWh | Apr 2022 | Dec 2024 | Solar |
| OREG 2 Inc | Ormat Nevada Inc | Culbertson, MT | Southwest Power Pool (SWPP) | 118.7 GWh | Nov 2008 | Sep 2025 | Waste Heat |
| OREG 1 Inc | Ormat Nevada Inc | Culbertson, MT | Southwest Power Pool (SWPP) | 143.8 GWh | Jun 2006 | Sep 2025 | Waste Heat |
| Opal Springs Hydro | Deschutes Valley Water District | Culver, OR | PacifiCorp West (PACW) | 29.4 GWh | Dec 1984 | Dec 2024 | Water |
| OR Solar 8, LLC | Heelstone Energy Holdings, LLC | Dairy, OR | PacifiCorp West (PACW) | 21.0 GWh | Feb 2018 | Dec 2024 | Solar |
| OTHERBenEKDallas | Generate ER-NG, LLC | Dallas, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 198.0 MWh | Apr 2023 | Dec 2024 | Natural Gas |
| Oak Leaf Solar XXXI LLC (CSG) | Greenbacker Renewable Energy Corporation | Debeque, CO | Public Service Company of Colorado (PSCO) | 3.4 GWh | Nov 2018 | Dec 2024 | Solar |
| Oak Leaf Solar XXVI LLC | Greenbacker Renewable Energy Corporation | Denver, CO | Public Service Company of Colorado (PSCO) | 3.7 GWh | Dec 2018 | Dec 2024 | Solar |
| Oak Leaf Solar XXII LLC (CSG) | Greenbacker Renewable Energy Corporation | Denver, CO | Public Service Company of Colorado (PSCO) | 3.6 GWh | Dec 2018 | Dec 2024 | Solar |
| Oak Leaf Solar XVIII LLC | Greenbacker Renewable Energy Corporation | Denver, CO | Southwest Power Pool (SWPP) | 11.5 GWh | Nov 2021 | Dec 2024 | Solar |
| Oberon II Solar Project | IP Oberon II, LLC | Desert Center, CA | California Independent System Operator (CISO) | 598.4 GWh | Aug 2023 | Sep 2025 | Solar |
| Oberon Solar Project | IP Oberon LLC | Desert Center, CA | California Independent System Operator (CISO) | 581.0 GWh | Aug 2023 | Sep 2025 | Solar |
| O'Shea Solar Farm | DTE Electric Company | Detroit, MI | Midcontinent Independent System Operator, Inc. (MISO) | 3.0 GWh | Jun 2017 | Dec 2024 | Solar |
| OR - Green Key - Gun Club | Gun Club Solar, LLC | Dundee, OR | Portland General Electric Company (PGE) | 24.0 MWh | Nov 2024 | Dec 2024 | Solar |
| OR Solar 2, LLC | OR Solar 2, LLC | Eagle Point, OR | PacifiCorp West (PACW) | 12.7 GWh | Sep 2020 | Dec 2024 | Solar |
| Old Wardour Solar | NuGen Capital Management | East Brookfield, MA | ISO New England (ISNE) | 6.6 GWh | Dec 2015 | Dec 2024 | Solar |
| Oregon Trail Windfarm LLC | Echo 1 | Echo, OR | PacifiCorp West (PACW) | 22.9 GWh | May 2009 | Dec 2024 | Wind |
| Oswegatchie | Erie Boulevard Hydropower LP | Edwards, NY | New York Independent System Operator (NYIS) | 8.5 GWh | Jul 2002 | Dec 2024 | Water |
| Osage Dam | Union Electric Co - (MO) | Eldon, MO | Midcontinent Independent System Operator, Inc. (MISO) | 497.1 GWh | Sep 1931 | Dec 2024 | Water |
| Old Trail Wind Farm | Old Trail Wind Farm LLC | Ellsworth, IL | PJM Interconnection, LLC (PJM) | 565.4 GWh | Nov 2007 | Sep 2025 | Wind |
| OR - Solops - SPI 18 - Clayfield | Clayfield Solar, LLC | Estacada, OR | Portland General Electric Company (PGE) | 202.0 MWh | Sep 2024 | Dec 2024 | Solar |
| Oak Grove | Portland General Electric Co | Estacada, OR | Portland General Electric Company (PGE) | 150.1 GWh | Jul 1924 | Dec 2024 | Water |
| Oak Hill Solar Array | Southern Indiana Gas & Elec Co | Evansville, IN | Midcontinent Independent System Operator, Inc. (MISO) | 3.3 GWh | Oct 2018 | Dec 2024 | Solar |
| Oxbow Creek | Oxbow Creek Energy LLC | Factoryville, PA | PJM Interconnection, LLC (PJM) | 41.0 GWh | Nov 2019 | Dec 2024 | Natural Gas |
| Overall Road Station | City of Farmington - (MO) | Farmington, MO | Midcontinent Independent System Operator, Inc. (MISO) | 26.0 MWh | Feb 2003 | Dec 2024 | Distillate Fuel Oil |
| O'Brien Solar Fields | Madison Gas & Electric Co | Fitchburg, WI | Midcontinent Independent System Operator, Inc. (MISO) | 38.5 GWh | Apr 2021 | Dec 2024 | Solar |
| Otis Elevator Company Solar | Otis Elevator Company | Florence, SC | Duke Energy Carolinas (DUK) | 1.5 GWh | Apr 2018 | Dec 2024 | Solar |
| Old Settler Wind | Old Settler Wind, LLC | Floydada, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 539.5 GWh | Mar 2017 | Sep 2025 | Wind |
| Old Caroleen Solar Farm | Cypress Creek Renewables | Forest City, NC | Duke Energy Carolinas (DUK) | 1.9 GWh | Jun 2018 | Dec 2024 | Solar |
| Oxbow (CA) | Placer County Water Agency | Foresthill, CA | California Independent System Operator (CISO) | 29.2 GWh | Sep 1966 | Sep 2024 | Water |
| Ocotillo Windpower | Duke Energy Renewables Services | Forsan, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 80.9 GWh | Aug 2008 | Dec 2024 | Wind |
| Ozark Beach | Empire District Electric Co | Forsyth, MO | Southwest Power Pool (SWPP) | 53.2 GWh | May 1931 | Dec 2024 | Water |
| OTHERTraditionClearfork | Texas Microgrid, LLC | Fort Worth, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 205.0 MWh | Mar 2023 | Dec 2024 | Natural Gas |
| One Patriot | Bloom Energy | Foxborough, MA | ISO New England (ISNE) | 16.3 GWh | Nov 2019 | Dec 2024 | Natural Gas |
| Oak Grove (TX) | Luminant Generation Company LLC | Franklin, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 11.0 TWh | Mar 2010 | Sep 2025 | Lignite Coal : 99.0% Natural Gas : 1.0% |
| Oyster Creek Unit VIII | Dow Chemical Company-Oyster Creek VIII | Freeport, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 2.3 TWh | Sep 1994 | Sep 2025 | Natural Gas : 99.8% |
| OK Produce Fresno Carport | OK Produce | Fresno, CA | California Independent System Operator (CISO) | 3.6 GWh | Dec 2018 | Dec 2024 | Solar |
| Orchard | Florida Power & Light Co | Ft. Pierce, FL | Florida Power & Light Co. (FPL) | 157.5 GWh | Dec 2023 | Sep 2025 | Solar |
| Oswego County Energy Recovery | Oswego County | Fulton, NY | New York Independent System Operator (NYIS) | 8.1 GWh | Jan 1986 | Dec 2024 | Non-biogenic Municipal Solid Waste : 55.0% Biogenic Municipal Solid Waste : 45.0% |
| Oswego County - Fulton Solar | Tesla Inc. | Fulton, NY | New York Independent System Operator (NYIS) | 2.2 GWh | May 2018 | Dec 2024 | Solar |
| Oswego Falls West | Erie Boulevard Hydropower LP | Fulton, NY | New York Independent System Operator (NYIS) | 8.1 GWh | Dec 1913 | Dec 2024 | Water |
| Oswego Falls East | Erie Boulevard Hydropower LP | Fulton, NY | New York Independent System Operator (NYIS) | 23.1 GWh | Dec 1913 | Dec 2024 | Water |
| Oaks Landfill - ANEM | Greenbacker Renewable Energy Corporation | Gaithersburg, MD | PJM Interconnection, LLC (PJM) | 2.7 GWh | Mar 2024 | Dec 2024 | Solar |
| Oaks Landfill CS 1 | Greenbacker Renewable Energy Corporation | Gaithersburg, MD | PJM Interconnection, LLC (PJM) | 2.6 GWh | Mar 2024 | Dec 2024 | Solar |
| Oaks Landfill CS 2 | Greenbacker Renewable Energy Corporation | Gaithersburg, MD | PJM Interconnection, LLC (PJM) | 2.7 GWh | Mar 2024 | Dec 2024 | Solar |
| Oak Solar | Oak Solar LLC | Gaston, NC | PJM Interconnection, LLC (PJM) | 259.8 GWh | Nov 2023 | Sep 2025 | Solar |
Summary of Power Plants By State
Figures are based on September 2025 generation numbers.| State | Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Alabama | # 7 | 76 | 12,052.47 GWh |
| Alaska | # 48 | 147 | 527.57 GWh |
| Arizona | # 9 | 183 | 11,602.92 GWh |
| Arkansas | # 21 | 117 | 5,844.09 GWh |
| California | # 4 | 1,769 | 19,371.91 GWh |
| Colorado | # 30 | 304 | 4,433.17 GWh |
| Connecticut | # 32 | 168 | 3,779.74 GWh |
| Delaware | # 49 | 33 | 419.31 GWh |
| District of Columbia | # 51 | 16 | 16.99 GWh |
| Florida | # 2 | 323 | 24,446.09 GWh |
| Georgia | # 8 | 266 | 11,628.97 GWh |
| Hawaii | # 47 | 73 | 826.54 GWh |
| Idaho | # 44 | 148 | 1,495.33 GWh |
| Illinois | # 5 | 385 | 14,642.93 GWh |
| Indiana | # 14 | 213 | 8,730.35 GWh |
| Iowa | # 26 | 295 | 5,224.35 GWh |
| Kansas | # 25 | 189 | 5,250.86 GWh |
| Kentucky | # 23 | 60 | 5,806.86 GWh |
| Louisiana | # 13 | 87 | 9,343.34 GWh |
| Maine | # 45 | 217 | 1,135.36 GWh |
| Maryland | # 39 | 204 | 2,935.42 GWh |
| Massachusetts | # 41 | 652 | 1,746.92 GWh |
| Michigan | # 11 | 279 | 10,468.02 GWh |
| Minnesota | # 29 | 769 | 4,717.95 GWh |
| Mississippi | # 20 | 58 | 6,625.37 GWh |
| Missouri | # 22 | 128 | 5,843.17 GWh |
| State | Rank | Active Plants | Sep 2025 Generation |
|---|---|---|---|
| Montana | # 40 | 72 | 1,949.24 GWh |
| Nebraska | # 34 | 132 | 3,501.38 GWh |
| Nevada | # 31 | 114 | 4,053.88 GWh |
| New Hampshire | # 42 | 60 | 1,549.07 GWh |
| New Jersey | # 27 | 399 | 4,969.45 GWh |
| New Mexico | # 36 | 145 | 3,317.84 GWh |
| New York | # 12 | 966 | 10,145.62 GWh |
| North Carolina | # 10 | 917 | 11,211.15 GWh |
| North Dakota | # 37 | 60 | 3,089.17 GWh |
| Ohio | # 6 | 201 | 12,818.31 GWh |
| Oklahoma | # 17 | 143 | 7,364.05 GWh |
| Oregon | # 28 | 282 | 4,812.51 GWh |
| Pennsylvania | # 3 | 260 | 19,731.43 GWh |
| Rhode Island | # 46 | 100 | 863.62 GWh |
| South Carolina | # 16 | 207 | 7,861.23 GWh |
| South Dakota | # 43 | 52 | 1,535.17 GWh |
| Tennessee | # 19 | 88 | 6,829.06 GWh |
| Texas | # 1 | 946 | 51,969.48 GWh |
| Utah | # 35 | 126 | 3,419.48 GWh |
| Vermont | # 50 | 120 | 165.14 GWh |
| Virginia | # 15 | 241 | 8,580.52 GWh |
| Washington | # 18 | 138 | 7,120.43 GWh |
| West Virginia | # 38 | 39 | 3,057.29 GWh |
| Wisconsin | # 24 | 251 | 5,674.74 GWh |
| Wyoming | # 33 | 73 | 3,641.70 GWh |