Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| O'Brien Solar Fields | Madison Gas & Electric Co | Fitchburg, WI | Midcontinent Independent System Operator, Inc. (MISO) | 37.4 GWh | Apr 2021 | Dec 2023 | Solar |
| O'Brien Wind | MidAmerican Energy Co | Primghar, IA | Midcontinent Independent System Operator, Inc. (MISO) | 834.6 GWh | Aug 2016 | Dec 2023 | Wind |
| O'Fallon Renewable Energy Center | Union Electric Co - (MO) | O'Fallon, MO | Midcontinent Independent System Operator, Inc. (MISO) | 5.3 GWh | Nov 2014 | Dec 2023 | Solar |
| O H Hutchings | Kimura Power LLC | Miamisburg, OH | PJM Interconnection, LLC (PJM) | 208.0 MWh | Jun 1948 | Dec 2023 | Natural Gas |
| O'Neill Creek Solar | O'Neill Creek Solar LLC | Gaston, OR | Portland General Electric Company (PGE) | 3.9 GWh | Oct 2019 | Dec 2023 | Solar |
| O'Shea Solar Farm | DTE Electric Company | Detroit, MI | Midcontinent Independent System Operator, Inc. (MISO) | 2.9 GWh | Jun 2017 | Dec 2023 | Solar |
| O W Sommers | City of San Antonio - (TX) | San Antonio, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 1.9 TWh | Mar 1972 | Dec 2023 | Natural Gas |
| Oahe | USACE-Omaha | Pierre, SD | Southwest Power Pool (SWPP) | 2.1 TWh | Mar 1962 | Dec 2023 | Water |
| Oak Bluffs Diesel Generating Facility | Vineyard Reliability LLC | Oak Bluffs, MA | ISO New England (ISNE) | 1.3 GWh | Dec 1968 | Dec 2023 | Distillate Fuel Oil |
| Oak Creek Energy Systems I | Terra-Gen Operating Co-Wind | Mojave, CA | California Independent System Operator (CISO) | 37.8 GWh | May 1982 | Dec 2023 | Wind |
| Oak Glen Wind Farm | Minnesota Municipal Power Agny | Blooming Prairie, MN | Midcontinent Independent System Operator, Inc. (MISO) | 95.7 GWh | Oct 2011 | Dec 2023 | Wind |
| Oak Grove | Portland General Electric Co | Estacada, OR | Portland General Electric Company (PGE) | 152.1 GWh | Jul 1924 | Dec 2023 | Water |
| Oak Grove Power Producers | Cube District Energy, LLC | Arcadia, KS | Southwest Power Pool (SWPP) | 20.2 GWh | Feb 2010 | Dec 2023 | Landfill Gas |
| Oak Grove (TX) | Luminant Generation Company LLC | Franklin, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 10.8 TWh | Mar 2010 | Feb 2025 | Lignite Coal : 97.6% Natural Gas : 2.4% |
| Oak Hill Solar Array | Southern Indiana Gas & Elec Co | Evansville, IN | Midcontinent Independent System Operator, Inc. (MISO) | 3.4 GWh | Oct 2018 | Dec 2023 | Solar |
| Oak Leaf - CSG Portfolio (OL 36) | Distributed Solar Development, LLC | Watkins, CO | Southwest Power Pool (SWPP) | 2.6 GWh | May 2021 | Dec 2023 | Solar |
| Oak Leaf - CSG Portfolio (OL 37) | Distributed Solar Development, LLC | Watkins, CO | Southwest Power Pool (SWPP) | 3.3 GWh | Nov 2020 | Dec 2023 | Solar |
| Oak Leaf - CSG Portfolio (OL 38) | Distributed Solar Development, LLC | Watkins, CO | Southwest Power Pool (SWPP) | 3.4 GWh | May 2021 | Dec 2023 | Solar |
| Oak Leaf - CSG Portfolio (OL 39) | Distributed Solar Development, LLC | Watkins, CO | Southwest Power Pool (SWPP) | 3.5 GWh | May 2021 | Dec 2023 | Solar |
| Oak Leaf - CSG Portfolio (OL 44) | Distributed Solar Development, LLC | Watkins, CO | Southwest Power Pool (SWPP) | 3.4 GWh | Nov 2020 | Dec 2023 | Solar |
| Oak Leaf Solar XVIII LLC | Greenbacker Renewable Energy Corporation | Denver, CO | Southwest Power Pool (SWPP) | 13.9 GWh | Nov 2021 | Dec 2023 | Solar |
| Oak Leaf Solar XXI (CSG) | Greenbacker Renewable Energy Corporation | Watkins, CO | Public Service Company of Colorado (PSCO) | 3.5 GWh | Nov 2018 | Dec 2023 | 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 2023 | Solar |
| Oak Leaf Solar XXIII LLC (CSG) | Greenbacker Renewable Energy Corporation | Watkins, CO | Public Service Company of Colorado (PSCO) | 3.5 GWh | Dec 2018 | Dec 2023 | Solar |
| Oak Leaf Solar XXIV LLC (CSG) | Greenbacker Renewable Energy Corporation | Watkins, CO | Public Service Company of Colorado (PSCO) | 3.1 GWh | Dec 2018 | Dec 2023 | Solar |
| Oak Leaf Solar XXV LLC (CSG) | Greenbacker Renewable Energy Corporation | Watkins, CO | Public Service Company of Colorado (PSCO) | 3.0 GWh | Nov 2018 | Dec 2023 | Solar |
| Oak Leaf Solar XXVI LLC | Greenbacker Renewable Energy Corporation | Denver, CO | Public Service Company of Colorado (PSCO) | 3.2 GWh | Dec 2018 | Dec 2023 | Solar |
| Oak Leaf Solar XXVII LLC | Greenbacker Renewable Energy Corporation | Greely, CO | Public Service Company of Colorado (PSCO) | 3.4 GWh | Oct 2018 | Dec 2023 | Solar |
| Oak Leaf Solar XXVIII LLC (CSG) | Greenbacker Renewable Energy Corporation | Platteville, CO | Public Service Company of Colorado (PSCO) | 3.0 GWh | May 2019 | Dec 2023 | Solar |
| Oak Leaf Solar XXX LLC (CSG) | Greenbacker Renewable Energy Corporation | Alamosa, CO | Public Service Company of Colorado (PSCO) | 4.0 GWh | Nov 2018 | Dec 2023 | Solar |
| Oak Leaf Solar XXXI LLC (CSG) | Greenbacker Renewable Energy Corporation | Debeque, CO | Public Service Company of Colorado (PSCO) | 3.3 GWh | Nov 2018 | Dec 2023 | Solar |
| Oak Leaf Solar XXXII (CSG) | Greenbacker Renewable Energy Corporation | Rifle, CO | Public Service Company of Colorado (PSCO) | 3.1 GWh | Feb 2019 | Dec 2023 | Solar |
| Oak Leaf Solar XXXIII LLC (Lantz) | Greenbacker Renewable Energy Corporation | Salida, CO | Public Service Company of Colorado (PSCO) | 3.9 GWh | Dec 2019 | Dec 2023 | Solar |
| Oak Point Cogen | Chevron Oronite Co LLC | Belle Chasse, LA | Midcontinent Independent System Operator, Inc. (MISO) | 92.8 GWh | Sep 1999 | Dec 2023 | Natural Gas |
| Oak Ridge LFGTE | Wabash Valley Power Assn, Inc | Logansport, IN | Midcontinent Independent System Operator, Inc. (MISO) | 21.7 GWh | Nov 2003 | Dec 2023 | Landfill Gas |
| Oak Ridge Solar | AES Clean Energy | Oak Ridge, LA | Midcontinent Independent System Operator, Inc. (MISO) | 447.8 GWh | Nov 2023 | Feb 2025 | Solar |
| Oak Solar | Oak Solar LLC | Gaston, NC | PJM Interconnection, LLC (PJM) | 203.1 GWh | Nov 2023 | Feb 2025 | Solar |
| Oak Street Solar | Citizens Enterprises Corporation | Springfield, MA | ISO New England (ISNE) | 5.4 GWh | Nov 2019 | Dec 2023 | Solar |
| Oak Trail Solar, LLC | Leeward Asset Management, LLC | Moyock, NC | PJM Interconnection, LLC (PJM) | 237.3 GWh | Jun 2023 | Feb 2025 | Solar |
| Oak Tree Energy | Consolidated Edison Development Inc. | Clark, SD | Southwest Power Pool (SWPP) | 66.7 GWh | Nov 2014 | Dec 2023 | Wind |
| Oakboro Farm | Palmetto Power Management LLC | Laurinburg, NC | Duke Energy Carolinas (DUK) | 8.3 GWh | Aug 2014 | Dec 2023 | Solar |
| Oakdale | Northern Indiana Pub Serv Co | Monticello, IN | Midcontinent Independent System Operator, Inc. (MISO) | 20.0 GWh | Oct 1925 | Dec 2023 | Water |
| Oakdale Power Station | Massachusetts Water Res Auth | West Boylston, MA | ISO New England (ISNE) | 12.0 GWh | Apr 1951 | Dec 2023 | Water |
| Oakfield Wind Project | Onward Energy | City of Oakfield, ME | ISO New England (ISNE) | 352.4 GWh | Sep 2015 | Feb 2025 | Wind |
| Oakland | Nautilus Solar Solutions | Oakland, ME | ISO New England (ISNE) | 8.0 GWh | Aug 2022 | Dec 2023 | Solar |
| Oakley Solar Project | Oakley Solar Project LLC | Oakley, CA | California Independent System Operator (CISO) | 2.4 GWh | May 2013 | Dec 2023 | Solar |
| Oakwood Solar | Oakwood Solar, LLC | Mebane, NC | Duke Energy Carolinas (DUK) | 9.5 GWh | May 2021 | Dec 2023 | Solar |
| Oasis Alta | Terra-Gen Operating Co-Wind | Mojave, CA | California Independent System Operator (CISO) | 45.4 GWh | Mar 2021 | Dec 2023 | Wind |
| Oasis Wind | Terra-Gen Operating Co-Wind | Mojave, CA | California Independent System Operator (CISO) | 205.4 GWh | Nov 2004 | Dec 2023 | Wind |
| Oberlin (KS) | City of Oberlin - (KS) | Oberlin, KS | Southwest Power Pool (SWPP) | 3.9 MWh | Dec 1953 | Dec 2023 | Distillate Fuel Oil |
| Oberlin (OH) | City of Oberlin - (OH) | Oberlin, OH | PJM Interconnection, LLC (PJM) | 292.0 MWh | Dec 1947 | Dec 2023 | Natural Gas : 84.0% Distillate Fuel Oil : 16.0% |
| Oberlin Spear Point Solar One | Oberlin College | Oberlin, OH | PJM Interconnection, LLC (PJM) | 2.1 GWh | Oct 2012 | Dec 2023 | Solar |
| Oberon IA | Oberon Solar IA | Odessa, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 276.7 GWh | Jun 2020 | Feb 2025 | Solar |
| Oberon IB | Oberon Solar IB | Odessa, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 55.7 GWh | Jun 2020 | Feb 2025 | Solar |
| Oberon II Solar Project | IP Oberon II, LLC | Desert Center, CA | California Independent System Operator (CISO) | 585.5 GWh | Aug 2023 | Feb 2025 | Solar |
| Oberon Solar Project | IP Oberon LLC | Desert Center, CA | California Independent System Operator (CISO) | 547.1 GWh | Aug 2023 | Feb 2025 | Solar |
| OBP Cogen | OBP Cogen LLC | New York, NY | New York Independent System Operator (NYIS) | 25.4 GWh | May 2010 | Dec 2023 | Natural Gas |
| Occidental College Solar Project | Occidental College | Los Angeles, CA | Los Angeles Department of Water and Power (LDWP) | 1.6 GWh | Jan 2013 | Dec 2023 | Solar |
| Ocean County Landfill | EPP Renewable Energy | Manchester, NJ | PJM Interconnection, LLC (PJM) | 64.3 GWh | Jan 1997 | Dec 2024 | Landfill Gas |
| Ocean State Power | Ocean State Power Co | Harrisville, RI | ISO New England (ISNE) | 1.3 TWh | Nov 1990 | Dec 2023 | Natural Gas : 99.6% |
| Ocean State Power II | Ocean State Power II | Harrisville, RI | ISO New England (ISNE) | 1.1 TWh | Sep 1991 | Dec 2023 | Natural Gas : 99.7% |
| Oceana Solar | Virginia Electric & Power Co | Virginia Beach, VA | PJM Interconnection, LLC (PJM) | 29.0 GWh | Nov 2017 | Dec 2023 | Solar |
| OCI Alamo 2, LLC | OCI Solar Power | Converse, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 9.5 GWh | Feb 2014 | Dec 2023 | Solar |
| OCI Alamo 3 LLC | Consolidated Edison Development Inc. | San Antonio, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 10.3 GWh | Nov 2014 | Dec 2023 | Solar |
| OCI Alamo 4, LLC | Consolidated Edison Development Inc. | Brackettville, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 78.9 GWh | Jul 2014 | Dec 2023 | Solar |
| OCI Alamo 5 LLC | Consolidated Edison Development Inc. | Uvalde, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 197.1 GWh | Nov 2015 | Dec 2023 | Solar |
| OCI Alamo 7 LLC | Consolidated Edison Development Inc. | Haskell, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 250.2 GWh | Jul 2016 | Dec 2023 | Solar |
| OCI Alamo Solar I Hybrid | OCI Solar Power | San Antonio, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 88.3 GWh | Nov 2013 | Dec 2023 | Solar |
| Ocoee 1 | Tennessee Valley Authority | Benton, TN | Tennessee Valley Authority (TVA) | 69.8 GWh | Dec 1911 | Dec 2023 | Water |
| Ocoee 2 | Tennessee Valley Authority | Benton, TN | Tennessee Valley Authority (TVA) | 80.7 GWh | Sep 1913 | Dec 2023 | Water |
| Ocoee 3 | Tennessee Valley Authority | Benton, TN | Tennessee Valley Authority (TVA) | 141.4 GWh | Mar 1943 | Dec 2023 | Water |
| Oconee | Duke Energy Carolinas, LLC | Seneca, SC | Duke Energy Carolinas (DUK) | 21.6 TWh | Jun 1973 | Feb 2025 | Nuclear |
| Oconto Falls Lower | Eagle Creek Renewable Energy, LLC | Oconto Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 4.4 GWh | Dec 1970 | Dec 2023 | Water |
| Oconto Falls Upper | Eagle Creek Renewable Energy, LLC | Oconto Falls, WI | Midcontinent Independent System Operator, Inc. (MISO) | 3.2 GWh | Dec 1917 | Dec 2023 | Water |
| Ocotillo | Arizona Public Service Co | Tempe, AZ | Arizona Public Service Company (AZPS) | 490.1 GWh | Feb 1960 | Feb 2025 | Natural Gas |
| Ocotillo Express LLC | Pattern Operators LP | Ocotillo, CA | California Independent System Operator (CISO) | 520.0 GWh | Nov 2012 | Feb 2025 | Wind |
| Ocotillo Wells | Conductive Power | Borrego Springs, CA | California Independent System Operator (CISO) | 112.1 GWh | Aug 2023 | Feb 2025 | Solar |
| Ocotillo Windpower | Duke Energy Renewables Services | Forsan, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 18.4 GWh | Aug 2008 | Dec 2023 | Wind |
| Odell Wind Farm | Algonquin Power Co | Mountain Lake, MN | Midcontinent Independent System Operator, Inc. (MISO) | 739.0 GWh | Jun 2016 | Dec 2023 | Wind |
| Odessa-Ector Power Plant | LaFrontera Holdings LLC | Odessa, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 7.6 TWh | Jun 2001 | Feb 2025 | Natural Gas |
| Odin Wind Farm LLC | NRG Energy Gas & Wind Holdings Inc | Mountainlake, MN | Midcontinent Independent System Operator, Inc. (MISO) | 34.2 GWh | Apr 2008 | Dec 2023 | Wind |
| Odyssey Energy Altura Cogen, LLC | Odyssey Operating Services | Channelview, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 3.6 TWh | Oct 1985 | Feb 2025 | Natural Gas |
| Odyssey Solar | Odyssey Solar, LLC | Pelion, SC | Dominion Energy South Carolina, Inc. (SCEG) | 17.5 GWh | Jul 2017 | Dec 2023 | Solar |
| OE_ALD | OE_ALD | Wing, AL | Southern Company Services, Inc. - Trans (SOCO) | 145.8 GWh | Mar 2023 | Feb 2025 | Solar |
| OE_AZ1 | Onward Energy | Salome, AZ | Western Area Power Administration - Desert Southwest Region (WALC) | 87.9 GWh | Nov 2019 | Feb 2025 | Solar |
| OE_ESCL | OE_ESCL | Grants, NM | Public Service Company of New Mexico (PNM) | 352.5 GWh | - | Feb 2025 | Solar |
| OE_FL7 | OE_FL7 | Putnam, FL | Florida Power & Light Co. (FPL) | 8.3 GWh | - | Feb 2025 | Solar |
| OE_GA3 | Onward Energy | Camilla, GA | Southern Company Services, Inc. - Trans (SOCO) | 119.3 GWh | Nov 2019 | Feb 2025 | Solar |
| OE IL Solar 3 | OE IL Solar 3, LLC | Oregon, IL | Midcontinent Independent System Operator, Inc. (MISO) | 4.1 GWh | Feb 2022 | Dec 2023 | Solar |
| OE_MS6 | OE_MS6 | St.Artesia, MS | Tennessee Valley Authority (TVA) | 239.1 GWh | - | Feb 2025 | Solar |
| OER Checkerspot | Standard Solar | Tracy's Landing, MD | PJM Interconnection, LLC (PJM) | 3.0 GWh | Nov 2021 | Dec 2023 | Solar |
| OER Monarch CSG | Standard Solar | Upper Marlboro, MD | PJM Interconnection, LLC (PJM) | 3.4 GWh | Nov 2021 | Dec 2023 | Solar |
| OER Patuxent CSG | Standard Solar | Lothian, MD | PJM Interconnection, LLC (PJM) | 4.2 GWh | Oct 2022 | Dec 2023 | Solar |
| OES Biogas Power | Organic Energy Solutions, Inc. | San Bernardino, CA | California Independent System Operator (CISO) | 348.0 MWh | - | Dec 2023 | Other Biomass Gas |
| OETN1 | OE_TN1 | Obion, TN | Tennessee Valley Authority (TVA) | 175.0 GWh | Feb 2023 | Feb 2025 | Solar |
| Off Airport Road - West | Off Airport Road - West, LLC | Accord, NY | New York Independent System Operator (NYIS) | 6.3 GWh | Nov 2019 | Dec 2023 | Solar |
| Ogburn Solar, LLC | Ogburn Solar, LLC | Jefferson, SC | Duke Energy Progress East (CPLE) | 4.7 GWh | Nov 2022 | Dec 2023 | Solar |
| Ogden | City of Ogden - (IA) | Ogden, IA | Midcontinent Independent System Operator, Inc. (MISO) | 5.0 MWh | Jun 1951 | Dec 2023 | Distillate Fuel Oil |
| Ogdensburg | Ampersand Ogdensburg Hydro, LLC | Ogdensburg, NY | New York Independent System Operator (NYIS) | 4.0 GWh | Nov 1987 | Dec 2023 | Water |
| Ohio Falls | Louisville Gas & Electric Co | Shippingport Island, KY | Louisville Gas and Electric Company and Kentucky Utilities Company (LGEE) | 272.0 GWh | Dec 1927 | Dec 2023 | Water |
Summary of Power Plants By State
Figures are based on February 2025 generation numbers.| State | Rank | Active Plants | Feb 2025 Generation |
|---|---|---|---|
| Alabama | # 7 | 75 | 10,454.23 GWh |
| Alaska | # 48 | 136 | 486.57 GWh |
| Arizona | # 15 | 165 | 7,949.76 GWh |
| Arkansas | # 28 | 80 | 4,750.62 GWh |
| California | # 5 | 1,593 | 15,002.38 GWh |
| Colorado | # 30 | 265 | 4,484.87 GWh |
| Connecticut | # 34 | 152 | 3,568.74 GWh |
| Delaware | # 49 | 31 | 376.39 GWh |
| District of Columbia | # 51 | 12 | 16.79 GWh |
| Florida | # 3 | 304 | 17,498.62 GWh |
| Georgia | # 8 | 241 | 10,439.72 GWh |
| Hawaii | # 46 | 66 | 666.80 GWh |
| Idaho | # 44 | 143 | 1,423.14 GWh |
| Illinois | # 4 | 338 | 15,696.94 GWh |
| Indiana | # 12 | 203 | 9,055.86 GWh |
| Iowa | # 20 | 281 | 6,506.74 GWh |
| Kansas | # 24 | 157 | 5,156.03 GWh |
| Kentucky | # 21 | 56 | 6,138.53 GWh |
| Louisiana | # 17 | 80 | 7,192.83 GWh |
| Maine | # 45 | 159 | 1,123.08 GWh |
| Maryland | # 39 | 181 | 2,579.41 GWh |
| Massachusetts | # 42 | 599 | 1,604.74 GWh |
| Michigan | # 10 | 267 | 10,280.63 GWh |
| Minnesota | # 27 | 740 | 5,066.98 GWh |
| Mississippi | # 22 | 55 | 5,414.37 GWh |
| Missouri | # 19 | 118 | 6,559.07 GWh |
| State | Rank | Active Plants | Feb 2025 Generation |
|---|---|---|---|
| Montana | # 40 | 69 | 2,324.85 GWh |
| Nebraska | # 36 | 119 | 3,333.41 GWh |
| Nevada | # 37 | 109 | 3,002.03 GWh |
| New Hampshire | # 43 | 56 | 1,435.29 GWh |
| New Jersey | # 31 | 375 | 4,428.89 GWh |
| New Mexico | # 38 | 140 | 2,585.31 GWh |
| New York | # 11 | 830 | 10,266.35 GWh |
| North Carolina | # 9 | 880 | 10,422.85 GWh |
| North Dakota | # 33 | 57 | 3,825.72 GWh |
| Ohio | # 6 | 190 | 12,150.65 GWh |
| Oklahoma | # 18 | 131 | 6,818.46 GWh |
| Oregon | # 25 | 259 | 5,152.36 GWh |
| Pennsylvania | # 2 | 240 | 21,039.59 GWh |
| Rhode Island | # 47 | 95 | 598.64 GWh |
| South Carolina | # 14 | 198 | 8,120.13 GWh |
| South Dakota | # 41 | 52 | 1,740.50 GWh |
| Tennessee | # 26 | 84 | 5,101.16 GWh |
| Texas | # 1 | 813 | 43,152.96 GWh |
| Utah | # 35 | 119 | 3,334.96 GWh |
| Vermont | # 50 | 112 | 195.02 GWh |
| Virginia | # 13 | 215 | 8,814.15 GWh |
| Washington | # 16 | 137 | 7,908.11 GWh |
| West Virginia | # 29 | 36 | 4,645.25 GWh |
| Wisconsin | # 23 | 221 | 5,315.49 GWh |
| Wyoming | # 32 | 73 | 3,941.95 GWh |