Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Okeelanta Cogeneration | New Hope Power Company | South Bay, FL | Florida Power & Light Co. (FPL) | 49.8 GWh | Dec 1995 | Apr 2025 | Agricultural By-Products : 97.7% Natural Gas : 2.3% |
| Oklahoma Wind Energy Center | FPL Energy Oklahoma Wind LLC | Woodward, OK | Southwest Power Pool (SWPP) | 145.2 GWh | Sep 2003 | Dec 2024 | Wind |
| Old 300 Solar Center, LLC | Old 300 Solar Center, LLC | Needville, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 877.4 GWh | Sep 2024 | Apr 2025 | 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 |
| Old Caroleen Solar Farm | Cypress Creek Renewables | Forest City, NC | Duke Energy Carolinas (DUK) | 1.9 GWh | Jun 2018 | Dec 2024 | Solar |
| Old Catawba PV 1 | Ecoplexus, Inc | Claremont, NC | Duke Energy Carolinas (DUK) | 5.6 GWh | Nov 2015 | 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 |
| Old Court Rd Solar | Old Court Rd Solar, LLC | Woodstock, MD | PJM Interconnection, LLC (PJM) | 2.9 GWh | Sep 2019 | Dec 2024 | Solar |
| Old Faithful | NorthWestern Energy (MT wind/thermal) | Yellowstone, WY | NorthWestern Corporation (NWMT) | 273.0 MWh | Nov 1979 | Dec 2024 | Distillate Fuel Oil |
| Old Frontier Solar III | Old Frontier Solar III PV, LLC | South Deerfield, MA | ISO New England (ISNE) | 4.1 GWh | Aug 2022 | Dec 2024 | Solar |
| Old Gold Energy Center, LLC | Old Gold Energy Center, LLC | Joice, IA | Midcontinent Independent System Operator, Inc. (MISO) | 78.4 GWh | Sep 2001 | Dec 2024 | Wind |
| Old Hickory | USCE-Nashville District | Hendersonville, TN | Tennessee Valley Authority (TVA) | 436.6 GWh | Mar 1957 | Dec 2024 | Water |
| Old Middleboro Road Solar | Agilitas Energy, Inc. | Rochester, MA | ISO New England (ISNE) | 10.9 GWh | Dec 2022 | Dec 2024 | Solar |
| Old Midville Solar | Citizens Enterprises Corporation | Millen, GA | Southern Company Services, Inc. - Trans (SOCO) | 42.1 GWh | Oct 2016 | Dec 2024 | Solar |
| Old Mill Solar | Old Mill Solar | Bly, OR | PacifiCorp West (PACW) | 7.2 GWh | Nov 2015 | Dec 2024 | Solar |
| Old Pageland Monroe Road Solar Farm | Cypress Creek Renewables | Monroe, NC | Duke Energy Carolinas (DUK) | 8.8 GWh | Oct 2015 | Dec 2024 | Solar |
| Old Plank Road Solar Farm, LLC | Southeastern Solar Farm Fund, LLC | Jacksonville, FL | JEA (JEA) | 5.5 GWh | Sep 2017 | Dec 2024 | Solar |
| Old Settler Wind | Old Settler Wind, LLC | Floydada, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 545.6 GWh | Mar 2017 | Apr 2025 | Wind |
| Old Trail Wind Farm | Old Trail Wind Farm LLC | Ellsworth, IL | PJM Interconnection, LLC (PJM) | 584.0 GWh | Nov 2007 | Apr 2025 | Wind |
| Old Wardour Solar | NuGen Capital Management | East Brookfield, MA | ISO New England (ISNE) | 6.6 GWh | Dec 2015 | Dec 2024 | Solar |
| Old Wire Farm | Strata Manager, LLC | Laurel Hill, NC | Duke Energy Progress East (CPLE) | 10.3 GWh | Nov 2016 | 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% |
| Olinda Trail Solar | Olinda Trail Solar LLC | Lindstrom, MN | Midcontinent Independent System Operator, Inc. (MISO) | 2.1 GWh | Aug 2019 | Dec 2024 | Solar |
| Olive View Medical Center | Los Angeles County DHS | Sylmar, CA | Los Angeles Department of Water and Power (LDWP) | 11.4 GWh | Jan 1987 | Feb 2024 | Natural Gas |
| OlivePV | Indiana Michigan Power Co | New Carlisle, IN | PJM Interconnection, LLC (PJM) | 8.6 GWh | Jul 2016 | Apr 2025 | Solar |
| Oliver Dam | Georgia Power Co | Columbus, GA | Southern Company Services, Inc. - Trans (SOCO) | 128.4 GWh | Jun 1959 | Dec 2024 | Water |
| Oliver Wind III, LLC | Oliver Wind III, LLC | Mandan, ND | Midcontinent Independent System Operator, Inc. (MISO) | 425.8 GWh | Dec 2016 | Apr 2025 | Wind |
| Oliver Wind IV | Oliver Wind IV, LLC | Hannover, ND | Southwest Power Pool (SWPP) | 322.7 GWh | Nov 2024 | Apr 2025 | Wind |
| Olmstead II CSG | Olmstead Solar II, LLC | Lena, IL | PJM Interconnection, LLC (PJM) | 4.4 GWh | Aug 2021 | Dec 2024 | Solar |
| Olmsted Waste Energy | Olmsted County Public Works | Rochester, MN | Midcontinent Independent System Operator, Inc. (MISO) | 46.7 GWh | Mar 1987 | Dec 2024 | Non-biogenic Municipal Solid Waste : 54.7% Biogenic Municipal Solid Waste : 44.7% Natural Gas : 0.5% |
| Olney Solar II CSG | Olney Solar II, LLC | Olney, IL | Midcontinent Independent System Operator, Inc. (MISO) | 4.4 GWh | May 2021 | Dec 2024 | Solar |
| Olsen | Olsen Power Partners | Whitmore, CA | California Independent System Operator (CISO) | 13.5 GWh | Dec 1989 | Dec 2024 | Water |
| Oltmans SCE at Champagne | California PV Energy LLC | Ontario, CA | California Independent System Operator (CISO) | 1.5 GWh | Nov 2013 | Dec 2024 | Solar |
| Oltmans SCE at Jurupa | California PV Energy LLC | Ontario, CA | California Independent System Operator (CISO) | 2.4 GWh | Nov 2013 | Dec 2024 | Solar |
| Omega Hills Gas Recovery | WM Renewable Energy LLC | Germantown, WI | Midcontinent Independent System Operator, Inc. (MISO) | 81.7 GWh | Nov 1985 | Apr 2025 | Landfill Gas |
| Omtanke Solar | DG South Carolina Solar, LLC | Ridgeville, SC | South Carolina Public Service Authority (SC) | 9.9 GWh | Feb 2020 | Dec 2024 | Solar |
| Onalaska Campus Landfill Biogas | Gundersen Lutheran Biogas I LLC | Onalaska, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.3 GWh | Feb 2012 | Dec 2024 | Landfill Gas |
| 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 |
| 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 |
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 |