Directory of Power Plants in the United States
Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
---|---|---|---|---|---|---|---|
Onancock Diesel Generation Facility | Old Dominion Electric Coop | Onancock, VA | PJM Interconnection, LLC (PJM) | 264.0 MWh | Oct 2002 | Dec 2024 | Distillate Fuel Oil |
One Market Plaza | Paramount Group Inc | San Francisco, CA | California Independent System Operator (CISO) | 177.0 MWh | Nov 2003 | Dec 2024 | Natural Gas |
One Patriot | Bloom Energy | Foxborough, MA | ISO New England (ISNE) | 16.3 GWh | Nov 2019 | Dec 2024 | Natural Gas |
One Ten Partners PV | One Ten Partners, LLC | Palmdale, CA | California Independent System Operator (CISO) | 6.1 GWh | Aug 2017 | Dec 2024 | Solar |
Oneida | PacifiCorp | Riverdale, ID | PacifiCorp East (PACE) | 42.0 GWh | Jun 1915 | Dec 2024 | Water |
Oneida County- DPW | Tesla Inc. | Oriskany, NY | ISO New England (ISNE) | 1.8 GWh | Sep 2017 | 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 |
Oneida - South | Oneida DG Solar, LLC | Whitestown, NY | New York Independent System Operator (NYIS) | 2.5 GWh | Nov 2015 | Dec 2024 | Solar |
Oneida - West | Oneida DG Solar, LLC | Whitestown, NY | New York Independent System Operator (NYIS) | 2.5 GWh | Nov 2015 | Dec 2024 | Solar |
Oneta Energy Center | Oneta Power LLC | Broken Arrow, OK | Southwest Power Pool (SWPP) | 5.5 TWh | Jun 2002 | Apr 2025 | Natural Gas |
Onion River | Wisconsin Power & Light Co | Sheboygan Cedar Grove, WI | Midcontinent Independent System Operator, Inc. (MISO) | 214.1 GWh | Nov 2023 | Apr 2025 | Solar |
Onondaga County- Clearwater | Tesla Inc. | Oswego, NY | ISO New England (ISNE) | 2.8 GWh | Jun 2017 | Dec 2024 | Solar |
Onondaga County- Jamesville | Tesla Inc. | Jamesville, NY | New York Independent System Operator (NYIS) | 1.9 GWh | Feb 2018 | Dec 2024 | Solar |
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 |
Onondaga County Resource Recovery | Covanta Onondega LP | Jamesville, NY | New York Independent System Operator (NYIS) | 204.7 GWh | Oct 1994 | Apr 2025 | Non-biogenic Municipal Solid Waste : 54.6% Biogenic Municipal Solid Waste : 44.7% Natural Gas : 0.7% |
Onset East Community Solar Facility | Kearsarge Onset LLC | Wareham, MA | ISO New England (ISNE) | 1.8 GWh | Mar 2016 | Dec 2024 | Solar |
Onset West Community Solar Facility | Kearsarge Onset LLC | Wareham, MA | ISO New England (ISNE) | 1.8 GWh | Mar 2016 | Dec 2024 | Solar |
Onslow Power Producers | Cube District Energy, LLC | Jacksonville, NC | Duke Energy Carolinas (DUK) | 13.2 GWh | Oct 2013 | Dec 2024 | Landfill Gas |
Ontario LFGTE | Seneca Energy II | Stanley, NY | New York Independent System Operator (NYIS) | 68.5 GWh | Oct 2003 | Dec 2024 | Landfill Gas |
Ontario Solar Center | Adapture Renewables, Inc. | Ontario, OR | Idaho Power Company (IPCO) | 6.8 GWh | Apr 2020 | Dec 2024 | Solar |
Ontario Sun | Azimuth 180 Solar Electric, LLC | Sandy Creek, NY | New York Independent System Operator (NYIS) | 3.6 GWh | Jan 2023 | Dec 2024 | Solar |
Ontelaunee Energy Center | Ontelaunee Energy Center | Reading, PA | PJM Interconnection, LLC (PJM) | 3.7 TWh | Apr 2002 | Apr 2025 | Natural Gas |
Onyx - Allen Harim | Onyx Asset Services Group | Harbeson, DE | PJM Interconnection, LLC (PJM) | 1.8 GWh | Mar 2017 | Dec 2023 | Solar |
Onyx - Brockton Thatcher Landfill Solar | Onyx Asset Services Group | Brockton, MA | ISO New England (ISNE) | 4.3 GWh | Oct 2017 | Dec 2023 | Solar |
Onyx - Lamphear Road CSG | Onyx Asset Services Group | Rome, NY | New York Independent System Operator (NYIS) | 2.7 GWh | Sep 2016 | Dec 2024 | Solar |
Onyx - Pembroke Landfill Solar | Onyx Asset Services Group | Pembroke, MA | ISO New England (ISNE) | 3.3 GWh | Nov 2017 | Dec 2024 | Solar |
Onyx - Saratoga Springs Landfill Solar C | Onyx Asset Services Group | Saratoga Springs, NY | New York Independent System Operator (NYIS) | 2.5 GWh | Oct 2017 | Dec 2024 | Solar |
Opal Springs Hydro | Deschutes Valley Water District | Culver, OR | PacifiCorp West (PACW) | 29.4 GWh | Dec 1984 | Dec 2024 | Water |
Open Range Solar Center, LLC | Cypress Creek Renewables | Nyssa, OR | Idaho Power Company (IPCO) | 21.2 GWh | Aug 2016 | Apr 2025 | Solar |
Open Sky Dairy | Renewable Solar, Inc | Riverdale, CA | California Independent System Operator (CISO) | 2.1 GWh | Jun 2024 | Dec 2024 | Solar |
Open Sky Ranch Inc | Bravo REC Management LLC | Riverdale, CA | California Independent System Operator (CISO) | 1.9 GWh | Jun 2024 | Dec 2024 | Solar |
Open View Solar Farm | Cross Pollination Inc | New Haven, VT | ISO New England (ISNE) | 2.8 GWh | Aug 2013 | Dec 2024 | Solar |
Opryland USA | Gaylord Entertainment Co | Nashville, TN | Tennessee Valley Authority (TVA) | 17.5 GWh | Jun 1995 | Apr 2025 | Natural Gas |
Optimum Wind 3 LLC | Optimum Wind 3 LLC | Nevada, IA | Midcontinent Independent System Operator, Inc. (MISO) | 10.4 GWh | Feb 2017 | Dec 2024 | Wind |
Optimum Wind 4 LLC | Optimum Wind 4 LLC | Nevada, IA | Midcontinent Independent System Operator, Inc. (MISO) | 10.5 GWh | Feb 2017 | Dec 2024 | Wind |
Optimum Wind 5 LLC | Optimum Wind 5 LLC | Nevada, IA | Midcontinent Independent System Operator, Inc. (MISO) | 9.0 GWh | Feb 2017 | Dec 2024 | Wind |
Optimum Wind 6 LLC | Optimum Wind 6 LLC | Nevada, IA | Midcontinent Independent System Operator, Inc. (MISO) | 8.7 GWh | Feb 2017 | Dec 2024 | Wind |
Optimum Wind 7 LLC | Optimum Wind 7 LLC | Nevada, IA | Midcontinent Independent System Operator, Inc. (MISO) | 11.0 GWh | Feb 2017 | Dec 2024 | Wind |
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 - Green Key - Marquam | Marquam Creek Solar, LLC | Molalla, OR | Portland General Electric Company (PGE) | 37.0 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 |
OR Solar 3, LLC | Heelstone Energy Holdings, LLC | Malin, OR | PacifiCorp West (PACW) | 22.7 GWh | Nov 2017 | Dec 2024 | Solar |
OR Solar 5, LLC | Heelstone Energy Holdings, LLC | Merrill, OR | PacifiCorp West (PACW) | 18.3 GWh | Dec 2017 | Dec 2024 | Solar |
OR Solar 6, LLC | Heelstone Energy Holdings, LLC | Lakeview, OR | PacifiCorp West (PACW) | 22.2 GWh | Nov 2017 | Dec 2024 | Solar |
OR Solar 8, LLC | Heelstone Energy Holdings, LLC | Dairy, OR | PacifiCorp West (PACW) | 21.0 GWh | Feb 2018 | Dec 2024 | Solar |
OR - Solops - SPI 18 - Clayfield | Clayfield Solar, LLC | Estacada, OR | Portland General Electric Company (PGE) | 202.0 MWh | Sep 2024 | Dec 2024 | Solar |
Orange Blossom Solar Center | Florida Power & Light Co | Vero Beach, FL | Florida Power & Light Co. (FPL) | 147.3 GWh | Apr 2021 | Apr 2025 | Solar |
Orange Coast College PH2 Solar Project | Solar Star Coastal Pirate, LLC | Costa Mesa, CA | California Independent System Operator (CISO) | 4.6 GWh | Apr 2022 | Dec 2023 | Solar : 88.9% Electricity used for energy storage : 11.1% |
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 County Solar Farm (NY) | Tesla Inc. | Goshen, NY | ISO New England (ISNE) | 2.5 GWh | Apr 2017 | Dec 2024 | Solar |
Orange Grove Peaking Facility | Orange Grove Energy LP | Pala, CA | California Independent System Operator (CISO) | 23.6 GWh | May 2010 | Dec 2024 | Natural Gas |
Orange PV | Terraform Arcadia | Orange, MA | ISO New England (ISNE) | 2.6 GWh | Jun 2013 | Dec 2024 | Solar |
Orange Street G1 | Town of Bedford - (VA) | Bedford, VA | PJM Interconnection, LLC (PJM) | 168.0 MWh | Jun 2005 | Dec 2024 | Distillate Fuel Oil |
Orbit Bloom Fuel Cell | DG Fuel Cell, LLC | Medford, NY | New York Independent System Operator (NYIS) | 45.6 GWh | Jul 2020 | Dec 2024 | Natural Gas |
Orca | Cordova Electric Coop, Inc | Cordova, AK | 6.3 GWh | Sep 1984 | Dec 2023 | Distillate Fuel Oil | |
Orchard | Florida Power & Light Co | Ft. Pierce, FL | Florida Power & Light Co. (FPL) | 172.2 GWh | Dec 2023 | Apr 2025 | Solar |
Orchard Park | Borough of Chambersburg | Chambersburg, PA | PJM Interconnection, LLC (PJM) | 31.1 GWh | Nov 2003 | Apr 2025 | Natural Gas : 94.3% Distillate Fuel Oil : 5.7% |
Orchard Ranch Solar | Orchard Ranch Solar, LLC | Orchard, ID | Idaho Power Company (IPCO) | 43.5 GWh | Feb 2017 | Apr 2025 | Solar |
Orchard Windfarm 1, LLC | Orchard Windfarm, LLC | Lexington, OR | PacifiCorp West (PACW) | 29.9 GWh | Nov 2020 | Dec 2024 | Wind |
Orchard Windfarm 2, LLC | Orchard Windfarm, LLC | Lexington, OR | Bonneville Power Administration (BPAT) | 29.8 GWh | Nov 2020 | Dec 2024 | Wind |
Orchard Windfarm 3, LLC | Orchard Windfarm, LLC | Lexington, OR | Bonneville Power Administration (BPAT) | 27.9 GWh | Nov 2020 | Dec 2024 | Wind |
Orchard Windfarm 4, LLC | Orchard Windfarm, LLC | Lexington, OR | PacifiCorp West (PACW) | 29.7 GWh | Nov 2020 | Dec 2024 | Wind |
Ord | City of Ord - (NE) | Ord, NE | Southwest Power Pool (SWPP) | 106.0 MWh | Dec 1962 | Dec 2024 | Distillate Fuel Oil |
OREG 1 Inc | Ormat Nevada Inc | Culbertson, MT | Southwest Power Pool (SWPP) | 154.4 GWh | Jun 2006 | Apr 2025 | Waste Heat |
OREG 2 Inc | Ormat Nevada Inc | Culbertson, MT | Southwest Power Pool (SWPP) | 111.1 GWh | Nov 2008 | Apr 2025 | Waste Heat |
OREG 3 Inc | Ormat Nevada Inc | Trimont, MN | Midcontinent Independent System Operator, Inc. (MISO) | 41.3 GWh | Jul 2010 | Apr 2025 | Waste Heat |
OREG 4 Peetz | Ormat Nevada Inc | Peetz, CO | Western Area Power Administration - Rocky Mountain Region (WACM) | 3.2 GWh | Feb 2009 | May 2024 | Waste Heat |
Oregon Clean Energy Center | Oregon Clean Energy Center | Oregon, OH | PJM Interconnection, LLC (PJM) | 5.9 TWh | Jun 2017 | Apr 2025 | Natural Gas |
Oregon Convention Center | Tesla Inc. | Portland, OR | PacifiCorp West (PACW) | 1.6 GWh | Jun 2016 | Dec 2024 | Solar |
Oregon State University Energy Center | Oregon State University | Corvallis, OR | Bonneville Power Administration (BPAT) | 46.7 GWh | May 2010 | Apr 2025 | Natural Gas |
Oregon Trail Wind Park | Idaho Wind Partners 1 LLC | Hagerman, ID | Idaho Power Company (IPCO) | 40.6 GWh | Dec 2010 | Dec 2024 | Wind |
Oregon Trail Windfarm LLC | Echo 1 | Echo, OR | PacifiCorp West (PACW) | 22.9 GWh | May 2009 | Dec 2024 | Wind |
Oregon University System OIT Klamath Fal | Tesla Inc. | Klamath Falls, OR | PacifiCorp West (PACW) | 2.5 GWh | Dec 2013 | Dec 2024 | Solar |
Oregon University System Rabbit Field | Tesla Inc. | Corvallis, OR | PacifiCorp West (PACW) | 1.2 GWh | Feb 2014 | Dec 2024 | Solar |
Organ Church Solar | MN8 Energy LLC | Rockwell, NC | Duke Energy Carolinas (DUK) | 10.2 GWh | Jan 2019 | Dec 2024 | Solar |
Orient Wind Farm | MidAmerican Energy Co | Orient, IA | Midcontinent Independent System Operator, Inc. (MISO) | 1.8 TWh | Nov 2018 | Apr 2025 | Wind |
Origin Wind | Enel Green Power NA, Inc. | Hennepin, OK | Southwest Power Pool (SWPP) | 514.3 GWh | Oct 2014 | Dec 2024 | Wind |
Orioles Community Solar | Azimuth 180 Solar Electric, LLC | Hannacroix, NY | New York Independent System Operator (NYIS) | 7.6 GWh | Sep 2022 | Dec 2024 | Solar |
Orion Community Solar | Orion Community Solar | St. Joseph, MN | Midcontinent Independent System Operator, Inc. (MISO) | 4.8 GWh | Dec 2016 | Dec 2024 | Solar |
Orion I Solar Project | Ben Milam Solar 1 LLC | Burlington, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 323.5 GWh | Jul 2024 | Apr 2025 | Solar |
Orion II Solar Project | Ben Milam Solar 2 LLC | Rosebud, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 277.5 GWh | Aug 2024 | Apr 2025 | Solar |
Orion III Solar Project | Ben Milam Solar 3 LLC | Buckholts, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 396.7 GWh | Jul 2024 | Apr 2025 | Solar |
Orion Solar I | Orion Solar I LLC | Arvin, CA | California Independent System Operator (CISO) | 28.3 GWh | Mar 2014 | Dec 2024 | Solar |
Orion Solar II | Orion Solar II, LLC | Arvin, CA | California Independent System Operator (CISO) | 19.0 GWh | May 2014 | Dec 2024 | Solar |
Orlando Cogen LP | Florida Municipal Power Agency | Orlando, FL | Duke Energy Florida, Inc. (FPC) | 704.8 GWh | Aug 1993 | Dec 2024 | Natural Gas |
Ormesa I | Ormat Nevada Inc | Holtville, CA | Imperial Irrigation District (IID) | 70.2 GWh | Nov 1986 | Dec 2024 | Geothermal |
Ormesa II | Ormat Nevada Inc | Holtville, CA | Imperial Irrigation District (IID) | 131.7 GWh | Apr 1989 | Dec 2024 | Geothermal |
Ormesa III | Ormat Nevada Inc | Holtville, CA | Imperial Irrigation District (IID) | 44.4 GWh | Apr 1989 | Dec 2024 | Geothermal |
Ormond Beach | Ormond Beach Power, LLC | Oxnard, CA | California Independent System Operator (CISO) | 50.3 GWh | Jul 1971 | Apr 2025 | Natural Gas |
Oro Loma | Consolidated Edison Development Inc. | Oro Loma, CA | California Independent System Operator (CISO) | 25.5 GWh | Dec 2016 | Dec 2024 | Solar |
Orono B | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 21.3 GWh | Oct 2013 | Dec 2024 | Water |
Orono Hydro Station | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 5.8 GWh | Dec 2008 | Dec 2024 | Water |
Oroville Cogeneration LP | Apex Power Generation Corp. | Oroville, CA | California Independent System Operator (CISO) | 672.3 MWh | Dec 1989 | Dec 2024 | Natural Gas |
Orrville | City of Orrville - (OH) | Orrville, OH | PJM Interconnection, LLC (PJM) | 22.0 GWh | Dec 1948 | Aug 2024 | Bituminous Coal : 51.7% Natural Gas : 48.3% |
Orrville Peaking | American Mun Power-Ohio, Inc | Orrville, OH | PJM Interconnection, LLC (PJM) | 209.0 MWh | Jun 1999 | Dec 2024 | Distillate Fuel Oil |
Osage City Solar | Evergy Kansas Central, Inc | Osage City, KS | Southwest Power Pool (SWPP) | 164.0 MWh | Nov 2024 | Dec 2024 | Solar |
Osage Dam | Union Electric Co - (MO) | Eldon, MO | Midcontinent Independent System Operator, Inc. (MISO) | 497.1 GWh | Sep 1931 | Dec 2024 | Water |
Osage (IA) | City of Osage - (IA) | Osage, IA | Midcontinent Independent System Operator, Inc. (MISO) | 5.6 GWh | Aug 1963 | Dec 2024 | Wind : 81.2% Solar : 18.8% |
Osage Wind, LLC | Enel Green Power NA, Inc. | Burbank, OK | Associated Electric Cooperative, Inc. (AECI) | 549.0 GWh | May 2015 | Dec 2024 | Wind |
Summary of Power Plants By State
Figures are based on April 2025 generation numbers.State | Rank | Active Plants | Apr 2025 Generation |
---|---|---|---|
Alabama | # 7 | 75 | 10,243.20 GWh |
Alaska | # 48 | 142 | 476.79 GWh |
Arizona | # 15 | 173 | 7,447.02 GWh |
Arkansas | # 31 | 99 | 3,937.58 GWh |
California | # 4 | 1,664 | 15,684.45 GWh |
Colorado | # 28 | 290 | 4,479.29 GWh |
Connecticut | # 37 | 162 | 2,832.47 GWh |
Delaware | # 49 | 32 | 450.59 GWh |
District of Columbia | # 51 | 16 | 13.07 GWh |
Florida | # 2 | 317 | 20,430.69 GWh |
Georgia | # 6 | 248 | 11,378.75 GWh |
Hawaii | # 46 | 68 | 750.53 GWh |
Idaho | # 44 | 145 | 1,489.98 GWh |
Illinois | # 5 | 358 | 14,828.23 GWh |
Indiana | # 14 | 208 | 7,809.31 GWh |
Iowa | # 19 | 294 | 6,020.16 GWh |
Kansas | # 21 | 180 | 5,162.37 GWh |
Kentucky | # 25 | 57 | 4,785.23 GWh |
Louisiana | # 16 | 83 | 7,414.75 GWh |
Maine | # 45 | 208 | 1,052.11 GWh |
Maryland | # 36 | 196 | 3,016.71 GWh |
Massachusetts | # 43 | 623 | 1,491.61 GWh |
Michigan | # 9 | 269 | 9,486.98 GWh |
Minnesota | # 27 | 765 | 4,502.46 GWh |
Mississippi | # 20 | 56 | 5,727.48 GWh |
Missouri | # 23 | 120 | 5,119.33 GWh |
State | Rank | Active Plants | Apr 2025 Generation |
---|---|---|---|
Montana | # 40 | 70 | 2,029.46 GWh |
Nebraska | # 38 | 127 | 2,575.70 GWh |
Nevada | # 33 | 110 | 3,434.99 GWh |
New Hampshire | # 42 | 56 | 1,516.23 GWh |
New Jersey | # 22 | 385 | 5,160.42 GWh |
New Mexico | # 32 | 139 | 3,447.34 GWh |
New York | # 8 | 930 | 9,830.59 GWh |
North Carolina | # 10 | 909 | 9,044.94 GWh |
North Dakota | # 35 | 57 | 3,134.93 GWh |
Ohio | # 12 | 197 | 8,321.20 GWh |
Oklahoma | # 18 | 136 | 6,341.82 GWh |
Oregon | # 24 | 272 | 4,888.92 GWh |
Pennsylvania | # 3 | 255 | 17,282.62 GWh |
Rhode Island | # 47 | 97 | 690.36 GWh |
South Carolina | # 11 | 200 | 8,436.34 GWh |
South Dakota | # 41 | 52 | 1,909.63 GWh |
Tennessee | # 26 | 86 | 4,565.37 GWh |
Texas | # 1 | 885 | 43,683.73 GWh |
Utah | # 39 | 122 | 2,192.68 GWh |
Vermont | # 50 | 117 | 200.11 GWh |
Virginia | # 17 | 233 | 6,991.48 GWh |
Washington | # 13 | 134 | 8,268.23 GWh |
West Virginia | # 30 | 39 | 3,969.31 GWh |
Wisconsin | # 29 | 244 | 4,163.43 GWh |
Wyoming | # 34 | 73 | 3,236.34 GWh |