Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Interstate Solar Energy Center | Florida Power & Light Co | Ft. Pierce, FL | Florida Power & Light Co. (FPL) | 134.6 GWh | Dec 2018 | Aug 2026 | Solar |
| Intrepid | MidAmerican Energy Co | Schaller, IA | Midcontinent Independent System Operator, Inc. (MISO) | 546.4 GWh | Nov 2004 | Dec 2025 | Wind |
| Invenergy Nelson Expansion LLC | Invenergy Services LLC | Rock Falls, IL | PJM Interconnection, LLC (PJM) | 836.5 GWh | Mar 2023 | Aug 2026 | Natural Gas |
| Inver Hills | Northern States Power Co - Minnesota | Inver Grove Heights, MN | Midcontinent Independent System Operator, Inc. (MISO) | 129.5 GWh | Mar 1972 | Dec 2025 | Natural Gas : 98.8% Distillate Fuel Oil : 1.2% |
| Iola | City of Iola - (KS) | Iola, KS | Southwest Power Pool (SWPP) | 605.0 MWh | Apr 1969 | Dec 2025 | Natural Gas : 76.7% Distillate Fuel Oil : 23.3% |
| IOS - ERW9 | Madison Energy Holdings LLC | Carteret, NJ | PJM Interconnection, LLC (PJM) | 6.3 GWh | Jul 2017 | Dec 2025 | Solar |
| IOS II-LAX9 | Madison Energy Holdings LLC | Fontana, CA | California Independent System Operator (CISO) | 3.5 GWh | Jan 2020 | Dec 2025 | Solar |
| IOS - MEW Phase 1 | Madison Energy Holdings LLC | Madison, ME | ISO New England (ISNE) | 5.1 GWh | Dec 2016 | Dec 2025 | Solar |
| Iowa Distributed Wind Generation Project | City of Algona - (IA) | Algona, IA | Southwest Power Pool (SWPP) | 3.7 GWh | May 2000 | Dec 2025 | Wind |
| Iowa Hydro LLC | Zero6 Energy Hydro | Maquoketa, IA | Midcontinent Independent System Operator, Inc. (MISO) | 6.0 GWh | Dec 1923 | Aug 2026 | Water |
| Iowa Lakes Community College Wind Farm | Iowa Lakes Community College | Estherville, IA | Midcontinent Independent System Operator, Inc. (MISO) | 374.0 MWh | Jan 2005 | Apr 2026 | Wind |
| Iowa Lakes Superior Wind Farm | Iowa Lakes Electric Coop | Superior, IA | Southwest Power Pool (SWPP) | 34.7 GWh | Mar 2009 | Dec 2025 | Wind |
| Iowa State University | Iowa State University | Ames, IA | Midcontinent Independent System Operator, Inc. (MISO) | 73.4 GWh | Sep 1960 | Aug 2026 | Natural Gas : 97.8% Distillate Fuel Oil : 2.2% |
| IP Radian, LLC | Intersect USA, LLC | Brookesmith, TX | Electric Reliability Council of Texas, Inc. (ERCO) | 593.3 GWh | Apr 2023 | Aug 2026 | Solar |
| IP Springfield Oregon | International Paper Corporation - Springfield | Springfield, OR | Bonneville Power Administration (BPAT) | 180.9 GWh | Dec 1948 | Dec 2025 | Black Liquor : 78.2% Natural Gas : 21.8% |
| IPC 25 Solar | Prologis Logistics Services Incorporated | Tracy, CA | California Independent System Operator (CISO) | 4.9 GWh | Jun 2024 | Dec 2025 | Solar |
| Ipswich Wind Turbine | Town of Ipswich - (MA) | Ipswich, MA | ISO New England (ISNE) | 2.1 GWh | Apr 2011 | Dec 2025 | Wind |
| IRE Solar I, LLC | Scotch Settlement | Gouverneur, NY | New York Independent System Operator (NYIS) | 1.5 GWh | Nov 2017 | Dec 2025 | Solar |
| Iredell County LFG Facility | Iredell Transmission LLC | Statesville, NC | Duke Energy Carolinas (DUK) | 26.0 GWh | Jul 2008 | Dec 2025 | Landfill Gas |
| Iris Solar LLC | Iris Solar LLC | Franklinton, LA | Midcontinent Independent System Operator, Inc. (MISO) | 117.7 GWh | Sep 2022 | Aug 2026 | Solar |
| Iris Solar, LLC (MN) | Geronimo Power | Nicollet, MN | Midcontinent Independent System Operator, Inc. (MISO) | 2.1 GWh | Sep 2020 | Dec 2025 | Solar |
| Irish Creek Wind | Irish Creek Wind, LLC | Frankfort, KS | Southwest Power Pool (SWPP) | 927.7 GWh | Nov 2021 | Aug 2026 | Wind |
| Iron Horse Battery Storage Hybrid | RWE Clean Energy | Tucson, AZ | Tucson Electric Power (TEPC) | 4.2 GWh | Mar 2017 | Dec 2025 | Solar |
| Iron Horse Solar 4, LLC | Iron Horse Solar 4, LLC | North Billerica, MA | ISO New England (ISNE) | 7.1 GWh | May 2017 | Dec 2025 | Solar |
| Iron Horse Solar I CSG | Iron Horse Solar 1, LLC | North Billerica, MA | ISO New England (ISNE) | 4.1 GWh | Nov 2016 | Dec 2025 | Solar |
| Iron Springs Solar, LLC | Clearway Renewable Operation & Maintenance LLC | Cedar City, UT | PacifiCorp East (PACE) | 212.0 GWh | Jul 2016 | Aug 2026 | Solar |
| Iron Star Wind Project | Engie North America | Dodge City, KS | Southwest Power Pool (SWPP) | 1.3 TWh | Nov 2021 | Aug 2026 | Wind |
| Ironwood LLC | Helix Ironwood LLC | Lebanon, PA | PJM Interconnection, LLC (PJM) | 3.9 TWh | Nov 2001 | Aug 2026 | Natural Gas |
| Ironwood Solar LLC | Altus Power America Management, LLC | Blythe, CA | California Independent System Operator (CISO) | 7.3 GWh | Mar 2012 | Dec 2025 | Solar |
| Ironwood Wind | Deriva Energy | Spearville, KS | Southwest Power Pool (SWPP) | 476.3 GWh | Jul 2012 | Dec 2025 | Wind |
| Iroquois Solar 1B LLC CSG | Iroquois Solar 1B LLC | Watseka, IL | Midcontinent Independent System Operator, Inc. (MISO) | 4.0 GWh | Nov 2020 | Dec 2025 | Solar |
| Irwin Solar, LLC | SRC Partnership 12, LLC | Kankakee, IL | PJM Interconnection, LLC (PJM) | 4.3 GWh | Feb 2024 | Dec 2025 | Solar |
| Isabella Hydro Project | Isabella Partners | Lake Isabella, CA | California Independent System Operator (CISO) | 32.1 GWh | Nov 1990 | Dec 2025 | Water |
| Isabella Wind Park | DTE Electric Company | Rosebush, MI | Midcontinent Independent System Operator, Inc. (MISO) | 831.7 GWh | May 2021 | Aug 2026 | Wind |
| ISH Solar Central, LLC | SunEdison LLC | Bayville, NJ | PJM Interconnection, LLC (PJM) | 1.4 GWh | Sep 2011 | Dec 2025 | Solar |
| ISH Solar Hospital Downey | Kaiser Permanente | Downey, CA | California Independent System Operator (CISO) | 1.4 GWh | Aug 2011 | Dec 2025 | Solar |
| ISH Solar Hospital SDMC | Kaiser Permanente | San Diego, CA | California Independent System Operator (CISO) | 1.4 GWh | Nov 2011 | Dec 2025 | Solar |
| Island Park | Fall River Rural Elec Coop Inc | Island Park, ID | Bonneville Power Administration (BPAT) | 9.7 GWh | Mar 1994 | Dec 2025 | Water |
| Island Street Peaking Plant | WPPI Energy | Kaukauna, WI | Midcontinent Independent System Operator, Inc. (MISO) | 20.2 GWh | May 2004 | Dec 2025 | Natural Gas |
| ISM Solar Cranston CSG | Nautilus Solar Solutions | Cranston, RI | ISO New England (ISNE) | 4.3 GWh | Nov 2020 | Dec 2025 | Solar |
| ISM Solar Dighton 2, LLC CSG | 38 Degrees North, LLC | Dighton, MA | ISO New England (ISNE) | 3.6 GWh | Nov 2017 | Dec 2025 | Solar |
| ISM Solar Shepherd Acres | Navisun LLC | South Paris, ME | ISO New England (ISNE) | 4.5 GWh | Nov 2024 | Dec 2025 | Solar |
| ISU Customer Hosted 1MW Solar Project | Interstate Power and Light Co | Ames, IA | Midcontinent Independent System Operator, Inc. (MISO) | 2.5 GWh | Apr 2024 | Dec 2025 | Solar |
| Ivanhoe Generation Facility | Orion Engineered Carbons | Franklin, LA | Midcontinent Independent System Operator, Inc. (MISO) | 72.2 GWh | Mar 2023 | Dec 2025 | Waste Heat |
| Ivanhoe Solar | Altus Power America Management, LLC | Visalia, CA | California Independent System Operator (CISO) | 5.3 GWh | Dec 2013 | Dec 2025 | Solar |
| Ivanpah 1 | NRG Energy Services | Nipton, CA | California Independent System Operator (CISO) | 189.8 GWh | Nov 2013 | Aug 2026 | Solar : 95.6% Natural Gas : 4.4% |
| Ivanpah 2 | NRG Energy Services | Nipton, CA | California Independent System Operator (CISO) | 227.5 GWh | Nov 2013 | Aug 2026 | Solar : 98.7% Natural Gas : 1.3% |
| Ivanpah 3 | NRG Energy Services | Nipton, CA | California Independent System Operator (CISO) | 178.8 GWh | Nov 2013 | Aug 2026 | Solar : 97.4% Natural Gas : 2.6% |
| IVC Solar | Imperial Irrigation District | Imperial, CA | Imperial Irrigation District (IID) | 4.2 GWh | Nov 2016 | Dec 2025 | Solar |
| Ivester Wind Farm | MidAmerican Energy Co | Wellsburg, IA | Midcontinent Independent System Operator, Inc. (MISO) | 322.9 GWh | Nov 2018 | Aug 2026 | Wind |
Summary of Power Plants By State
Figures are based on August 2026 generation numbers.| State | Rank | Active Plants | Aug 2026 Generation |
|---|---|---|---|
| Alabama | # 9 | 80 | 13,897.78 GWh |
| Alaska | # 48 | 146 | 672.99 GWh |
| Arizona | # 10 | 203 | 13,589.64 GWh |
| Arkansas | # 23 | 122 | 7,027.75 GWh |
| California | # 3 | 1,840 | 24,164.86 GWh |
| Colorado | # 30 | 321 | 5,322.30 GWh |
| Connecticut | # 34 | 180 | 4,400.98 GWh |
| Delaware | # 49 | 35 | 555.40 GWh |
| District of Columbia | # 51 | 19 | 21.71 GWh |
| Florida | # 2 | 345 | 28,185.93 GWh |
| Georgia | # 6 | 261 | 15,282.60 GWh |
| Hawaii | # 47 | 73 | 863.62 GWh |
| Idaho | # 43 | 152 | 1,754.56 GWh |
| Illinois | # 5 | 556 | 18,683.36 GWh |
| Indiana | # 17 | 226 | 9,970.06 GWh |
| Iowa | # 27 | 301 | 5,759.64 GWh |
| Kansas | # 26 | 191 | 6,368.18 GWh |
| Kentucky | # 21 | 63 | 7,221.26 GWh |
| Louisiana | # 14 | 93 | 10,670.45 GWh |
| Maine | # 45 | 250 | 1,285.31 GWh |
| Maryland | # 37 | 236 | 3,745.22 GWh |
| Massachusetts | # 41 | 679 | 1,958.59 GWh |
| Michigan | # 12 | 288 | 12,064.19 GWh |
| Minnesota | # 32 | 794 | 5,047.38 GWh |
| Mississippi | # 19 | 62 | 8,358.70 GWh |
| Missouri | # 22 | 134 | 7,125.71 GWh |
| State | Rank | Active Plants | Aug 2026 Generation |
|---|---|---|---|
| Montana | # 40 | 72 | 2,266.60 GWh |
| Nebraska | # 39 | 132 | 3,448.00 GWh |
| Nevada | # 29 | 117 | 5,523.31 GWh |
| New Hampshire | # 42 | 60 | 1,901.10 GWh |
| New Jersey | # 25 | 409 | 6,440.88 GWh |
| New Mexico | # 33 | 166 | 4,571.47 GWh |
| New York | # 11 | 1,087 | 13,130.21 GWh |
| North Carolina | # 8 | 921 | 14,263.55 GWh |
| North Dakota | # 38 | 62 | 3,579.89 GWh |
| Ohio | # 7 | 216 | 14,448.49 GWh |
| Oklahoma | # 13 | 153 | 10,965.38 GWh |
| Oregon | # 31 | 292 | 5,257.14 GWh |
| Pennsylvania | # 4 | 270 | 23,772.83 GWh |
| Rhode Island | # 46 | 108 | 924.31 GWh |
| South Carolina | # 16 | 214 | 9,989.71 GWh |
| South Dakota | # 44 | 53 | 1,486.65 GWh |
| Tennessee | # 18 | 101 | 8,430.26 GWh |
| Texas | # 1 | 1,069 | 65,726.98 GWh |
| Utah | # 36 | 131 | 4,074.82 GWh |
| Vermont | # 50 | 118 | 175.56 GWh |
| Virginia | # 15 | 255 | 10,241.54 GWh |
| Washington | # 20 | 137 | 8,189.60 GWh |
| West Virginia | # 28 | 41 | 5,593.74 GWh |
| Wisconsin | # 24 | 272 | 6,683.19 GWh |
| Wyoming | # 35 | 71 | 4,322.19 GWh |