Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Iowa State University | Iowa State University | Ames, IA | Midcontinent Independent System Operator, Inc. (MISO) | 82.4 GWh | Sep 1960 | May 2025 | Natural Gas |
| IP Radian, LLC | IP Radian, LLC | Brookesmith, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 652.1 GWh | Apr 2023 | May 2025 | Solar |
| IP Springfield Oregon | International Paper Corporation - Springfield | Springfield, OR | Bonneville Power Administration (BPAT) | 168.9 GWh | Dec 1948 | Dec 2024 | Black Liquor : 78.2% Natural Gas : 21.8% |
| IPC 25 Solar | Prologis Logistics Services Incorporated | Tracy, CA | California Independent System Operator (CISO) | 2.8 GWh | Jun 2024 | Dec 2024 | Solar |
| Ipswich Wind Turbine | Town of Ipswich - (MA) | Ipswich, MA | ISO New England (ISNE) | 1.5 GWh | Apr 2011 | Dec 2024 | Wind |
| IRE Solar I, LLC | Scotch Settlement | Gouverneur, NY | New York Independent System Operator (NYIS) | 1.6 GWh | Nov 2017 | Dec 2024 | Solar |
| Iredell County LFG Facility | Iredell Transmission LLC | Statesville, NC | Duke Energy Carolinas (DUK) | 25.7 GWh | Jul 2008 | Dec 2024 | Landfill Gas |
| Iris Solar LLC | Iris Solar LLC | Franklinton, LA | Midcontinent Independent System Operator, Inc. (MISO) | 111.4 GWh | Sep 2022 | May 2025 | Solar |
| Iris Solar, LLC (MN) | National Grid Renewables | Nicollet, MN | Midcontinent Independent System Operator, Inc. (MISO) | 2.1 GWh | Sep 2020 | Dec 2024 | Solar |
| Irish Creek Wind | Irish Creek Wind, LLC | Frankfort, KS | Southwest Power Pool (SWPP) | 960.3 GWh | Nov 2021 | May 2025 | Wind |
| Iron Gate | PacifiCorp | Hornbrook, CA | PacifiCorp West (PACW) | 81.5 GWh | Jan 1962 | Dec 2023 | Water |
| Iron Horse Battery Storage Hybrid | Big Sky Wind, LLC | Tucson, AZ | Tucson Electric Power (TEPC) | 3.7 GWh | Mar 2017 | Dec 2024 | Solar |
| Iron Horse Solar 4, LLC | Iron Horse Solar 4, LLC | North Billerica, MA | ISO New England (ISNE) | 7.4 GWh | May 2017 | Dec 2023 | Solar |
| Iron Horse Solar I CSG | Iron Horse Solar 1, LLC | North Billerica, MA | ISO New England (ISNE) | 4.3 GWh | Nov 2016 | Dec 2024 | Solar |
| Iron Springs Solar, LLC | Clearway Renewable Operation & Maintenance LLC | Cedar City, UT | PacifiCorp East (PACE) | 215.8 GWh | Jul 2016 | May 2025 | Solar |
| Iron Star Wind Project | Engie North America | Dodge City, KS | Southwest Power Pool (SWPP) | 1.3 TWh | Nov 2021 | May 2025 | Wind |
| Ironwood LLC | Helix Ironwood LLC | Lebanon, PA | PJM Interconnection, LLC (PJM) | 4.8 TWh | Nov 2001 | May 2025 | Natural Gas |
| Ironwood Solar LLC | Altus Power America Management, LLC | Blythe, CA | California Independent System Operator (CISO) | 7.5 GWh | Mar 2012 | Dec 2024 | Solar |
| Ironwood Wind | Duke Energy Renewables Services | Spearville, KS | Southwest Power Pool (SWPP) | 235.4 GWh | Jul 2012 | Dec 2024 | Wind |
| Iroquois Solar 1B LLC CSG | Iroquois Solar 1B LLC | Watseka, IL | Midcontinent Independent System Operator, Inc. (MISO) | 4.1 GWh | Nov 2020 | Dec 2023 | Solar |
| Irwindale Brew Yard, LLC | Irwindale Brew Yard, LLC | Irwindale, CA | California Independent System Operator (CISO) | 714.0 MWh | Jan 2002 | Apr 2025 | Solar : 99.9% |
| Isabella Hydro Project | Isabella Partners | Lake Isabella, CA | California Independent System Operator (CISO) | 43.0 GWh | Nov 1990 | Dec 2024 | Water |
| Isabella Wind Park | DTE Electric Company | Rosebush, MI | Midcontinent Independent System Operator, Inc. (MISO) | 915.5 GWh | May 2021 | May 2025 | Wind |
| ISH Solar Central, LLC | SunEdison LLC | Bayville, NJ | PJM Interconnection, LLC (PJM) | 1.6 GWh | Sep 2011 | Dec 2024 | Solar |
| Island Park | Fall River Rural Elec Coop Inc | Island Park, ID | Bonneville Power Administration (BPAT) | 17.9 GWh | Mar 1994 | Dec 2024 | Water |
| Island Street Peaking Plant | WPPI Energy | Kaukauna, WI | Midcontinent Independent System Operator, Inc. (MISO) | 11.0 GWh | May 2004 | Dec 2024 | Natural Gas |
| ISM Solar Cranston CSG | Nautilus Solar Solutions | Cranston, RI | ISO New England (ISNE) | 4.1 GWh | Nov 2020 | Dec 2024 | Solar |
| ISM Solar Dighton 2, LLC CSG | 38 Degrees North, LLC | Dighton, MA | ISO New England (ISNE) | 3.7 GWh | Nov 2017 | Dec 2024 | Solar |
| ISU Customer Hosted 1MW Solar Project | Interstate Power and Light Co | Ames, IA | Midcontinent Independent System Operator, Inc. (MISO) | 1.6 GWh | Apr 2024 | Dec 2024 | Solar |
| Ivanhoe Generation Facility | Orion Engineered Carbons | Franklin, LA | Midcontinent Independent System Operator, Inc. (MISO) | 53.2 GWh | Mar 2023 | Dec 2024 | Waste Heat |
| Ivanhoe Solar | Altus Power America Management, LLC | Visalia, CA | California Independent System Operator (CISO) | 5.6 GWh | Dec 2013 | Dec 2024 | Solar |
| Ivanpah 1 | NRG Energy Services | Nipton, CA | California Independent System Operator (CISO) | 165.9 GWh | Nov 2013 | May 2025 | Solar : 96.3% Natural Gas : 3.7% |
| Ivanpah 2 | NRG Energy Services | Nipton, CA | California Independent System Operator (CISO) | 270.0 GWh | Nov 2013 | May 2025 | Solar : 96.1% Natural Gas : 3.9% |
| Ivanpah 3 | NRG Energy Services | Nipton, CA | California Independent System Operator (CISO) | 250.6 GWh | Nov 2013 | May 2025 | Solar : 96.2% Natural Gas : 3.8% |
| IVC Solar | Imperial Irrigation District | Imperial, CA | Imperial Irrigation District (IID) | 4.2 GWh | Nov 2016 | Dec 2024 | Solar |
| Ivester Wind Farm | MidAmerican Energy Co | Wellsburg, IA | Midcontinent Independent System Operator, Inc. (MISO) | 340.1 GWh | Nov 2018 | May 2025 | Wind |
Summary of Power Plants By State
Figures are based on May 2025 generation numbers.| State | Rank | Active Plants | May 2025 Generation |
|---|---|---|---|
| Alabama | # 7 | 75 | 11,300.49 GWh |
| Alaska | # 48 | 142 | 475.90 GWh |
| Arizona | # 11 | 176 | 9,204.37 GWh |
| Arkansas | # 25 | 99 | 5,005.01 GWh |
| California | # 4 | 1,667 | 17,300.59 GWh |
| Colorado | # 28 | 290 | 4,508.30 GWh |
| Connecticut | # 38 | 162 | 2,580.83 GWh |
| Delaware | # 50 | 32 | 189.30 GWh |
| District of Columbia | # 51 | 16 | 14.93 GWh |
| Florida | # 2 | 317 | 24,888.07 GWh |
| Georgia | # 6 | 248 | 11,990.59 GWh |
| Hawaii | # 47 | 68 | 737.15 GWh |
| Idaho | # 42 | 145 | 1,633.17 GWh |
| Illinois | # 5 | 358 | 14,860.85 GWh |
| Indiana | # 17 | 210 | 7,386.37 GWh |
| Iowa | # 22 | 294 | 5,142.65 GWh |
| Kansas | # 24 | 181 | 5,016.68 GWh |
| Kentucky | # 21 | 58 | 5,314.31 GWh |
| Louisiana | # 14 | 83 | 8,104.32 GWh |
| Maine | # 45 | 208 | 1,219.14 GWh |
| Maryland | # 33 | 198 | 3,211.24 GWh |
| Massachusetts | # 43 | 624 | 1,590.93 GWh |
| Michigan | # 12 | 269 | 9,081.28 GWh |
| Minnesota | # 29 | 765 | 4,142.68 GWh |
| Mississippi | # 20 | 56 | 5,397.23 GWh |
| Missouri | # 23 | 121 | 5,122.89 GWh |
| State | Rank | Active Plants | May 2025 Generation |
|---|---|---|---|
| Montana | # 40 | 70 | 1,958.99 GWh |
| Nebraska | # 37 | 127 | 2,880.69 GWh |
| Nevada | # 30 | 110 | 4,010.09 GWh |
| New Hampshire | # 44 | 56 | 1,548.73 GWh |
| New Jersey | # 31 | 385 | 3,877.07 GWh |
| New Mexico | # 32 | 139 | 3,225.41 GWh |
| New York | # 10 | 929 | 10,057.90 GWh |
| North Carolina | # 9 | 909 | 10,631.50 GWh |
| North Dakota | # 35 | 57 | 3,062.36 GWh |
| Ohio | # 8 | 197 | 11,259.64 GWh |
| Oklahoma | # 18 | 139 | 6,659.06 GWh |
| Oregon | # 27 | 272 | 4,712.75 GWh |
| Pennsylvania | # 3 | 255 | 19,165.18 GWh |
| Rhode Island | # 46 | 97 | 795.05 GWh |
| South Carolina | # 13 | 200 | 8,379.29 GWh |
| South Dakota | # 41 | 52 | 1,667.11 GWh |
| Tennessee | # 19 | 86 | 5,858.87 GWh |
| Texas | # 1 | 890 | 49,337.47 GWh |
| Utah | # 39 | 122 | 2,500.89 GWh |
| Vermont | # 49 | 117 | 233.21 GWh |
| Virginia | # 16 | 233 | 7,447.37 GWh |
| Washington | # 15 | 134 | 7,969.22 GWh |
| West Virginia | # 34 | 39 | 3,129.59 GWh |
| Wisconsin | # 26 | 244 | 4,882.66 GWh |
| Wyoming | # 36 | 73 | 3,035.08 GWh |