Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Olney Solar II CSG | Olney Solar II, LLC | Olney, IL | Midcontinent Independent System Operator, Inc. (MISO) | 4.5 GWh | May 2021 | Dec 2023 | Solar |
| OLS Energy Chino | OLS Energy-Chino | Chino, CA | California Independent System Operator (CISO) | 10.7 GWh | Nov 1987 | Dec 2023 | Natural Gas |
| Olsen | Olsen Power Partners | Whitmore, CA | California Independent System Operator (CISO) | 18.4 GWh | Dec 1989 | Dec 2023 | Water |
| Oltmans SCE at Champagne | California PV Energy LLC | Ontario, CA | California Independent System Operator (CISO) | 1.2 GWh | Nov 2013 | Dec 2023 | Solar |
| Oltmans SCE at Jurupa | California PV Energy LLC | Ontario, CA | California Independent System Operator (CISO) | 1.7 GWh | Nov 2013 | Dec 2023 | Solar |
| Omega Hills Gas Recovery | WM Renewable Energy LLC | Germantown, WI | Midcontinent Independent System Operator, Inc. (MISO) | 86.2 GWh | Nov 1985 | Aug 2024 | Landfill Gas |
| Omtanke Solar | DG South Carolina Solar, LLC | Ridgeville, SC | South Carolina Public Service Authority (SC) | 10.4 GWh | Feb 2020 | Dec 2023 | Solar |
| Onalaska Campus Landfill Biogas | Gundersen Lutheran Biogas I LLC | Onalaska, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.4 GWh | Feb 2012 | Dec 2023 | Landfill Gas |
| Onancock Diesel Generation Facility | Old Dominion Electric Coop | Onancock, VA | PJM Interconnection, LLC (PJM) | 122.0 MWh | Oct 2002 | Dec 2023 | Distillate Fuel Oil |
| One Market Plaza | Paramount Group Inc | San Francisco, CA | California Independent System Operator (CISO) | 993.0 MWh | Nov 2003 | Dec 2023 | Natural Gas |
| One Patriot | Bloom Energy | Foxborough, MA | ISO New England (ISNE) | 13.1 GWh | Nov 2019 | Dec 2023 | Natural Gas |
| One Ten Partners PV | One Ten Partners, LLC | Palmdale, CA | California Independent System Operator (CISO) | 5.4 GWh | Aug 2017 | Dec 2023 | Solar |
| Oneida | PacifiCorp | Riverdale, ID | PacifiCorp East (PACE) | 42.4 GWh | Jun 1915 | Dec 2023 | Water |
| Oneida County- DPW | Tesla Inc. | Oriskany, NY | ISO New England (ISNE) | 1.8 GWh | Sep 2017 | Dec 2023 | Solar |
| Oneida Herkimer | WM Renewable Energy LLC | Boonville, NY | New York Independent System Operator (NYIS) | 26.3 GWh | Mar 2012 | Dec 2023 | Landfill Gas |
| Oneida - South | Oneida DG Solar, LLC | Whitestown, NY | New York Independent System Operator (NYIS) | 2.3 GWh | Nov 2015 | Dec 2023 | Solar |
| Oneida - West | Oneida DG Solar, LLC | Whitestown, NY | New York Independent System Operator (NYIS) | 2.3 GWh | Nov 2015 | Dec 2023 | Solar |
| Oneta Energy Center | Oneta Power LLC | Broken Arrow, OK | Southwest Power Pool (SWPP) | 5.7 TWh | Jun 2002 | Aug 2024 | Natural Gas |
| Onion River | Wisconsin Power & Light Co | Sheboygan Cedar Grove, WI | Midcontinent Independent System Operator, Inc. (MISO) | 147.5 GWh | Nov 2023 | Aug 2024 | Solar |
| Onondaga County- Clearwater | Tesla Inc. | Oswego, NY | ISO New England (ISNE) | 2.6 GWh | Jun 2017 | Dec 2023 | Solar |
| Onondaga County- Jamesville | Tesla Inc. | Jamesville, NY | New York Independent System Operator (NYIS) | 2.0 GWh | Feb 2018 | Dec 2023 | Solar |
| Onondaga County - Metro Water Board | Tesla Inc. | Clay, NY | New York Independent System Operator (NYIS) | 1.0 GWh | Jan 2016 | Dec 2023 | Solar |
| Onondaga County - Oak Orchard WWTP | Tesla Inc. | Clay, NY | New York Independent System Operator (NYIS) | 2.2 GWh | Oct 2017 | Dec 2023 | Solar |
| Onondaga County Resource Recovery | Covanta Onondega LP | Jamesville, NY | New York Independent System Operator (NYIS) | 208.8 GWh | Oct 1994 | Aug 2024 | Non-biogenic Municipal Solid Waste : 54.8% Biogenic Municipal Solid Waste : 44.8% |
| Onset East Community Solar Facility | Kearsarge Onset LLC | Wareham, MA | ISO New England (ISNE) | 1.8 GWh | Mar 2016 | Dec 2022 | Solar |
| Onset West Community Solar Facility | Kearsarge Onset LLC | Wareham, MA | ISO New England (ISNE) | 1.9 GWh | Mar 2016 | Dec 2022 | Solar |
| Onslow Power Producers | Cube District Energy, LLC | Jacksonville, NC | Duke Energy Carolinas (DUK) | 10.9 GWh | Oct 2013 | Dec 2023 | Landfill Gas |
| Ontario LFGTE | Seneca Energy II | Stanley, NY | New York Independent System Operator (NYIS) | 78.4 GWh | Oct 2003 | Dec 2023 | Landfill Gas |
| Ontario Solar Center | Adapture Renewables, Inc. | Ontario, OR | Idaho Power Company (IPCO) | 5.7 GWh | Apr 2020 | Dec 2023 | Solar |
| Ontario Sun | Azimuth 180 Solar Electric, LLC | Sandy Creek, NY | New York Independent System Operator (NYIS) | 2.1 GWh | Jan 2023 | Dec 2023 | Solar |
| Ontelaunee Energy Center | Ontelaunee Energy Center | Reading, PA | PJM Interconnection, LLC (PJM) | 3.8 TWh | Apr 2002 | Aug 2024 | 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 CSG | 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 2023 | Solar |
| Onyx - Pembroke Landfill Solar | Onyx Asset Services Group | Pembroke, MA | ISO New England (ISNE) | 3.7 GWh | Nov 2017 | Dec 2023 | Solar |
| Onyx - Saratoga Springs Landfill Solar CSG | Onyx Asset Services Group | Saratoga Springs, NY | New York Independent System Operator (NYIS) | 2.7 GWh | Oct 2017 | Dec 2023 | Solar |
| Opal Springs Hydro | Deschutes Valley Water District | Culver, OR | PacifiCorp West (PACW) | 24.2 GWh | Dec 1984 | Dec 2023 | Water |
| Open Range Solar Center, LLC | Cypress Creek Renewables | Nyssa, OR | Idaho Power Company (IPCO) | 22.0 GWh | Aug 2016 | Aug 2024 | Solar |
| Open View Solar Farm | Cross Pollination Inc | New Haven, VT | ISO New England (ISNE) | 2.5 GWh | Aug 2013 | Dec 2023 | Solar |
| Opryland USA | Gaylord Entertainment Co | Nashville, TN | Tennessee Valley Authority (TVA) | 26.7 GWh | Jun 1995 | Aug 2024 | Natural Gas |
| Optimum Wind 3 LLC | Optimum Wind 3 LLC | Nevada, IA | Midcontinent Independent System Operator, Inc. (MISO) | 7.1 GWh | Feb 2017 | Dec 2023 | Wind |
| Optimum Wind 4 LLC | Optimum Wind 4 LLC | Nevada, IA | Midcontinent Independent System Operator, Inc. (MISO) | 8.3 GWh | Feb 2017 | Dec 2023 | Wind |
| Optimum Wind 5 LLC | Optimum Wind 5 LLC | Nevada, IA | Midcontinent Independent System Operator, Inc. (MISO) | 8.2 GWh | Feb 2017 | Dec 2023 | Wind |
| Optimum Wind 6 LLC | Optimum Wind 6 LLC | Nevada, IA | Midcontinent Independent System Operator, Inc. (MISO) | 9.2 GWh | Feb 2017 | Dec 2023 | Wind |
| Optimum Wind 7 LLC | Optimum Wind 7 LLC | Nevada, IA | Midcontinent Independent System Operator, Inc. (MISO) | 10.1 GWh | Feb 2017 | Dec 2023 | Wind |
| OR Solar 2, LLC | OR Solar 2, LLC | Eagle Point, OR | PacifiCorp West (PACW) | 21.3 GWh | Sep 2020 | Dec 2023 | Solar |
| OR Solar 3, LLC | Heelstone Energy Holdings, LLC | Malin, OR | PacifiCorp West (PACW) | 23.3 GWh | Nov 2017 | Dec 2023 | Solar |
| OR Solar 5, LLC | Heelstone Energy Holdings, LLC | Merrill, OR | PacifiCorp West (PACW) | 18.0 GWh | Dec 2017 | Dec 2023 | Solar |
| OR Solar 6, LLC | Heelstone Energy Holdings, LLC | Lakeview, OR | PacifiCorp West (PACW) | 23.3 GWh | Nov 2017 | Dec 2023 | Solar |
| OR Solar 8, LLC | Heelstone Energy Holdings, LLC | Dairy, OR | PacifiCorp West (PACW) | 23.7 GWh | Feb 2018 | Dec 2023 | Solar |
| Orange Blossom Solar Center | Florida Power & Light Co | Vero Beach, FL | Florida Power & Light Co. (FPL) | 150.2 GWh | Apr 2021 | Aug 2024 | 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) | 391.0 GWh | Jan 1995 | Dec 2023 | Natural Gas |
| Orange County Solar Farm (NY) | Tesla Inc. | Goshen, NY | ISO New England (ISNE) | 2.3 GWh | Apr 2017 | Dec 2023 | Solar |
| Orange Grove Peaking Facility | Orange Grove Energy LP | Pala, CA | California Independent System Operator (CISO) | 18.1 GWh | May 2010 | Dec 2023 | Natural Gas |
| Orange PV | Terraform Arcadia | Orange, MA | ISO New England (ISNE) | 2.3 GWh | Jun 2013 | Dec 2023 | Solar |
| Orange Street G1 | Town of Bedford - (VA) | Bedford, VA | PJM Interconnection, LLC (PJM) | 211.0 MWh | Jun 2005 | Dec 2023 | Distillate Fuel Oil |
| Orbit Bloom Fuel Cell | DG Fuel Cell, LLC | Medford, NY | New York Independent System Operator (NYIS) | 42.6 GWh | Jul 2020 | Dec 2023 | Natural Gas |
| Orbit Energy Charlotte | Anaergia | Charlotte, NC | Duke Energy Carolinas (DUK) | 8.5 GWh | Oct 2016 | Dec 2022 | Other Biomass Gas |
| Orbit Energy RI | Anaergia | Johnston, RI | ISO New England (ISNE) | 3.7 GWh | Jun 2017 | Dec 2022 | Other Biomass 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) | 118.0 GWh | - | Aug 2024 | Solar |
| Orchard Avenue 1 | Yakima-Tieton Irrigation Dist | Yakima, WA | PacifiCorp West (PACW) | 2.6 GWh | Feb 1987 | Oct 2023 | Water |
| Orchard Park | Borough of Chambersburg | Chambersburg, PA | PJM Interconnection, LLC (PJM) | 24.9 GWh | Nov 2003 | Aug 2024 | Natural Gas : 98.6% Distillate Fuel Oil : 1.4% |
| Orchard Ranch Solar | Orchard Ranch Solar, LLC | Orchard, ID | Idaho Power Company (IPCO) | 42.8 GWh | Feb 2017 | Aug 2024 | Solar |
| Orchard Windfarm 1, LLC | Orchard Windfarm, LLC | Lexington, OR | PacifiCorp West (PACW) | 25.5 GWh | Nov 2020 | Dec 2023 | Wind |
| Orchard Windfarm 2, LLC | Orchard Windfarm, LLC | Lexington, OR | Bonneville Power Administration (BPAT) | 25.6 GWh | Nov 2020 | Dec 2023 | Wind |
| Orchard Windfarm 3, LLC | Orchard Windfarm, LLC | Lexington, OR | Bonneville Power Administration (BPAT) | 25.4 GWh | Nov 2020 | Dec 2023 | Wind |
| Orchard Windfarm 4, LLC | Orchard Windfarm, LLC | Lexington, OR | PacifiCorp West (PACW) | 25.6 GWh | Nov 2020 | Dec 2023 | Wind |
| Ord | City of Ord - (NE) | Ord, NE | Southwest Power Pool (SWPP) | 59.0 MWh | Dec 1962 | Dec 2023 | Distillate Fuel Oil : 97.4% Natural Gas : 2.6% |
| OREG 1 Inc | Ormat Nevada Inc | Culbertson, MT | Southwest Power Pool (SWPP) | 148.4 GWh | Jun 2006 | Aug 2024 | Waste Heat |
| OREG 2 Inc | Ormat Nevada Inc | Culbertson, MT | Southwest Power Pool (SWPP) | 107.0 GWh | Nov 2008 | Aug 2024 | Waste Heat |
| OREG 3 Inc | Ormat Nevada Inc | Trimont, MN | Midcontinent Independent System Operator, Inc. (MISO) | 35.8 GWh | Jul 2010 | Aug 2024 | 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) | 6.6 TWh | Jun 2017 | Aug 2024 | Natural Gas |
| Oregon Convention Center | Tesla Inc. | Portland, OR | PacifiCorp West (PACW) | 1.7 GWh | Jun 2016 | Dec 2023 | Solar |
| Oregon State University Energy Center | Oregon State University | Corvallis, OR | Bonneville Power Administration (BPAT) | 36.0 GWh | May 2010 | Aug 2024 | Natural Gas |
| Oregon Trail Wind Park | Idaho Wind Partners 1 LLC | Hagerman, ID | Idaho Power Company (IPCO) | 34.6 GWh | Dec 2010 | Dec 2023 | Wind |
| Oregon Trail Windfarm LLC | Echo 1 | Echo, OR | PacifiCorp West (PACW) | 21.2 GWh | May 2009 | Dec 2023 | Wind |
| Oregon University System OIT Klamath Falls | Tesla Inc. | Klamath Falls, OR | PacifiCorp West (PACW) | 2.4 GWh | Dec 2013 | Dec 2023 | Solar |
| Oregon University System Rabbit Field | Tesla Inc. | Corvallis, OR | PacifiCorp West (PACW) | 1.2 GWh | Feb 2014 | Dec 2023 | Solar |
| Organ Church Solar | MN8 Energy LLC | Rockwell, NC | Duke Energy Carolinas (DUK) | 10.3 GWh | Jan 2019 | Dec 2023 | Solar |
| Orient Wind Farm | MidAmerican Energy Co | Orient, IA | Midcontinent Independent System Operator, Inc. (MISO) | 1.8 TWh | Nov 2018 | Aug 2024 | Wind |
| Origin Wind | Enel Green Power NA, Inc. | Hennepin, OK | Southwest Power Pool (SWPP) | 519.8 GWh | Oct 2014 | Dec 2023 | Wind |
| Orioles Community Solar | Azimuth 180 Solar Electric, LLC | Hannacroix, NY | New York Independent System Operator (NYIS) | 7.5 GWh | Sep 2022 | Dec 2023 | Solar |
| Orion Community Solar | Orion Community Solar | St. Joseph, MN | Midcontinent Independent System Operator, Inc. (MISO) | 4.6 GWh | Dec 2016 | Dec 2023 | Solar |
| Orion I Solar Project | Ben Milam Solar 1 LLC | Burlington, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 54.6 GWh | - | Aug 2024 | Solar |
| Orion III Solar Project | Ben Milam Solar 3 LLC | Buckholts, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 65.9 GWh | - | Aug 2024 | Solar |
| Orion Solar I | Orion Solar I LLC | Arvin, CA | California Independent System Operator (CISO) | 28.9 GWh | Mar 2014 | Dec 2023 | Solar |
| Orion Solar II | Orion Solar II, LLC | Arvin, CA | California Independent System Operator (CISO) | 18.3 GWh | May 2014 | Dec 2023 | Solar |
| Orlando Cogen LP | Orlando CoGen Ltd LP | Orlando, FL | Duke Energy Florida, Inc. (FPC) | 1.0 TWh | Aug 1993 | Dec 2023 | Natural Gas |
| Ormesa I | Ormat Nevada Inc | Holtville, CA | Imperial Irrigation District (IID) | 101.7 GWh | Nov 1986 | Dec 2023 | Geothermal |
| Ormesa II | Ormat Nevada Inc | Holtville, CA | Imperial Irrigation District (IID) | 95.0 GWh | Apr 1989 | Dec 2023 | Geothermal |
| Ormesa III | Ormat Nevada Inc | Holtville, CA | Imperial Irrigation District (IID) | 68.5 GWh | Apr 1989 | Dec 2023 | Geothermal |
| Ormond Beach | Ormond Beach Power, LLC | Oxnard, CA | California Independent System Operator (CISO) | 44.9 GWh | Jul 1971 | Aug 2024 | Natural Gas |
| Oro Loma | Consolidated Edison Development Inc. | Oro Loma, CA | California Independent System Operator (CISO) | 25.3 GWh | Dec 2016 | Dec 2023 | Solar |
| Orono B | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 25.5 GWh | Oct 2013 | Dec 2023 | Water |
| Orono Hydro Station | Brookfield Black Bear Hydro, LLC | Orono, ME | ISO New England (ISNE) | 11.6 GWh | Dec 2008 | Dec 2023 | Water |
| Oroville Cogeneration LP | Oroville Cogeneration LP | Oroville, CA | California Independent System Operator (CISO) | 235.0 MWh | Dec 1989 | Dec 2023 | Natural Gas |
| Orrville | City of Orrville - (OH) | Orrville, OH | PJM Interconnection, LLC (PJM) | 20.8 GWh | Dec 1948 | Nov 2023 | Bituminous Coal : 66.6% Natural Gas : 33.4% |
Summary of Power Plants By State
Figures are based on August 2024 generation numbers.| State | Rank | Active Plants | Aug 2024 Generation |
|---|---|---|---|
| Alabama | # 7 | 78 | 14,073.11 GWh |
| Alaska | # 48 | 147 | 631.71 GWh |
| Arizona | # 10 | 161 | 12,447.73 GWh |
| Arkansas | # 23 | 77 | 6,473.81 GWh |
| California | # 4 | 1,666 | 22,299.47 GWh |
| Colorado | # 28 | 277 | 5,476.67 GWh |
| Connecticut | # 33 | 159 | 4,351.57 GWh |
| Delaware | # 49 | 31 | 481.79 GWh |
| District of Columbia | # 51 | 12 | 19.18 GWh |
| Florida | # 2 | 286 | 27,339.08 GWh |
| Georgia | # 6 | 251 | 14,863.07 GWh |
| Hawaii | # 47 | 69 | 841.39 GWh |
| Idaho | # 43 | 142 | 1,655.52 GWh |
| Illinois | # 5 | 335 | 17,196.16 GWh |
| Indiana | # 18 | 202 | 9,001.13 GWh |
| Iowa | # 26 | 283 | 5,529.62 GWh |
| Kansas | # 31 | 165 | 5,363.63 GWh |
| Kentucky | # 21 | 55 | 6,964.00 GWh |
| Louisiana | # 14 | 82 | 10,133.66 GWh |
| Maine | # 45 | 162 | 1,185.43 GWh |
| Maryland | # 38 | 185 | 3,346.65 GWh |
| Massachusetts | # 41 | 614 | 1,896.47 GWh |
| Michigan | # 12 | 274 | 12,135.86 GWh |
| Minnesota | # 27 | 748 | 5,511.98 GWh |
| Mississippi | # 19 | 55 | 7,436.42 GWh |
| Missouri | # 20 | 126 | 7,051.26 GWh |
| State | Rank | Active Plants | Aug 2024 Generation |
|---|---|---|---|
| Montana | # 40 | 70 | 2,306.38 GWh |
| Nebraska | # 36 | 125 | 3,559.93 GWh |
| Nevada | # 32 | 110 | 4,699.98 GWh |
| New Hampshire | # 42 | 60 | 1,808.14 GWh |
| New Jersey | # 25 | 387 | 5,633.45 GWh |
| New Mexico | # 39 | 139 | 3,198.26 GWh |
| New York | # 11 | 848 | 12,289.60 GWh |
| North Carolina | # 9 | 893 | 13,559.75 GWh |
| North Dakota | # 35 | 59 | 3,641.88 GWh |
| Ohio | # 8 | 190 | 13,652.00 GWh |
| Oklahoma | # 15 | 130 | 10,062.87 GWh |
| Oregon | # 29 | 262 | 5,448.37 GWh |
| Pennsylvania | # 3 | 246 | 23,205.63 GWh |
| Rhode Island | # 46 | 97 | 1,061.17 GWh |
| South Carolina | # 16 | 203 | 9,629.88 GWh |
| South Dakota | # 44 | 53 | 1,603.17 GWh |
| Tennessee | # 22 | 87 | 6,912.16 GWh |
| Texas | # 1 | 797 | 58,529.53 GWh |
| Utah | # 37 | 122 | 3,440.26 GWh |
| Vermont | # 50 | 114 | 207.44 GWh |
| Virginia | # 13 | 213 | 10,408.51 GWh |
| Washington | # 17 | 138 | 9,091.93 GWh |
| West Virginia | # 30 | 36 | 5,412.86 GWh |
| Wisconsin | # 24 | 230 | 6,416.93 GWh |
| Wyoming | # 34 | 70 | 3,868.32 GWh |