Directory of Power Plants in the United States
| Plant Name | Utility | Location | Balancing Authority | Annual Generation | Plant Date | Last Update | Fuel Types |
|---|---|---|---|---|---|---|---|
| Hydraulic Race | Erie Boulevard Hydropower LP | Lockport, NY | New York Independent System Operator (NYIS) | 6.9 GWh | Dec 1941 | Dec 2025 | Water |
| Inghams | Erie Boulevard Hydropower LP | Little Falls, NY | New York Independent System Operator (NYIS) | 25.6 GWh | Dec 1911 | Dec 2025 | Water |
| Johnsonville Dam | Erie Boulevard Hydropower LP | Johnsonville, NY | New York Independent System Operator (NYIS) | 4.2 GWh | Dec 1908 | Dec 2025 | Water |
| Great Falls (TN) | Tennessee Valley Authority | Rock Island, TN | Tennessee Valley Authority (TVA) | 131.1 GWh | Nov 1916 | Dec 2025 | Water |
| Kamargo | Erie Boulevard Hydropower LP | Black River, NY | New York Independent System Operator (NYIS) | 21.3 GWh | Dec 1920 | Dec 2025 | Water |
| Fort Loudoun | Tennessee Valley Authority | Lenoir City, TN | Tennessee Valley Authority (TVA) | 633.1 GWh | Oct 1943 | Dec 2025 | Water |
| Fort Patrick Henry | Tennessee Valley Authority | Kingsport, TN | Tennessee Valley Authority (TVA) | 94.8 GWh | Nov 1953 | Dec 2025 | Water |
| Douglas Dam | Tennessee Valley Authority | Dandridge, TN | Tennessee Valley Authority (TVA) | 341.3 GWh | Feb 1943 | Dec 2025 | Water |
| Oahe | USACE-Omaha | Pierre, SD | Southwest Power Pool (SWPP) | 2.0 TWh | Mar 1962 | Dec 2025 | Water |
| Chickamauga | Tennessee Valley Authority | Chattanooga, TN | Tennessee Valley Authority (TVA) | 693.8 GWh | Feb 1940 | Dec 2025 | Water |
| Cherokee Dam | Tennessee Valley Authority | Rudledge, TN | Tennessee Valley Authority (TVA) | 315.3 GWh | Mar 1942 | Dec 2025 | Water |
| Boone Dam | Tennessee Valley Authority | Kingsport, TN | Tennessee Valley Authority (TVA) | 145.5 GWh | Feb 1953 | Dec 2025 | Water |
| Apalachia | Tennessee Valley Authority | Reliance, TN | Tennessee Valley Authority (TVA) | 389.1 GWh | Aug 1943 | Dec 2025 | Water |
| Macomb | Erie Boulevard Hydropower LP | Malone, NY | New York Independent System Operator (NYIS) | 5.7 GWh | Dec 1939 | Dec 2025 | Water |
| Big Bend Dam | USACE-Omaha | Chamberlain, SD | Southwest Power Pool (SWPP) | 745.8 GWh | Aug 1964 | Dec 2025 | Water |
| Fort Randall | USACE-Omaha | Pickstown, SD | Southwest Power Pool (SWPP) | 1.4 TWh | Feb 1954 | Dec 2025 | Water |
| Rhinelander Mill | Ahlstrom-Munksjo | Rhinelander, WI | Midcontinent Independent System Operator, Inc. (MISO) | 7.7 GWh | Nov 1917 | Aug 2026 | Water |
| Allegheny No. 5 Hydro Station | Eagle Creek Renewable Energy, LLC | Schenley, PA | PJM Interconnection, LLC (PJM) | 35.4 GWh | Sep 1988 | Dec 2025 | Water |
| Allegheny No 6 Hydro Station | Eagle Creek Renewable Energy, LLC | Ford City, PA | PJM Interconnection, LLC (PJM) | 35.6 GWh | Oct 1988 | Dec 2025 | Water |
| Bypass | North Side Energy Company | Hazelton, ID | Idaho Power Company (IPCO) | 28.2 GWh | Feb 1987 | Oct 2025 | Water |
| S E Hazelton A | North Side Energy Company | Hazelton, ID | Idaho Power Company (IPCO) | 24.9 GWh | May 1990 | Oct 2025 | Water |
| Allegheny Hydro No 8 | Allegheny Hydro LP | Adrian, PA | PJM Interconnection, LLC (PJM) | 79.6 GWh | Nov 1990 | Dec 2025 | Water |
| Allegheny Hydro No 9 | Allegheny Hydro LP | Cowansville, PA | PJM Interconnection, LLC (PJM) | 86.4 GWh | Nov 1990 | Dec 2025 | Water |
| French Paper Hydro | French Paper Co | Niles, MI | PJM Interconnection, LLC (PJM) | 1.2 GWh | Dec 1920 | Aug 2026 | Water |
| Gilman Mill | Ampersand Gilman Hydro LP | Gilman, VT | ISO New England (ISNE) | 2.2 GWh | Dec 1940 | Dec 2025 | Water |
| Middle Fork Irrigation District | Middle Fork Irrigation Dist | Parkdale, OR | Bonneville Power Administration (BPAT) | 20.0 GWh | Feb 1986 | Dec 2025 | Water |
| Beaver Valley Patterson Dam | Central Rivers Power US, LLC | Beaver Falls, PA | PJM Interconnection, LLC (PJM) | 4.4 GWh | Aug 1982 | Dec 2025 | Water |
| Errol Hydroelectric Project | Errol Hydroelectric Co LLC | Errol, NH | ISO New England (ISNE) | 13.6 GWh | Oct 1986 | Dec 2025 | Water |
| Galesville Project | Douglas County - (OR) | Azalea, OR | PacifiCorp West (PACW) | 4.4 GWh | Jan 1987 | Dec 2025 | Water |
| Pepperell Hydro Power Plant | Eagle Creek Renewable Energy, LLC | Pepperell, MA | ISO New England (ISNE) | 2.2 GWh | Dec 1919 | Aug 2026 | Water |
| Boott Hydropower | Boott Hydro, LLC - Hybrid | Lowell, MA | ISO New England (ISNE) | 60.8 GWh | Sep 1985 | Dec 2025 | Water |
| Hailesboro 4 Plant | Central Rivers Power US, LLC | Hailesboro, NY | New York Independent System Operator (NYIS) | 9.8 GWh | Dec 1921 | Dec 2025 | Water |
| Marsh Valley Development | Marsh Valley Development Inc | McCammon, ID | PacifiCorp East (PACE) | 3.5 GWh | Mar 1993 | Dec 2025 | Water |
| Copenhagen Plant | Central Rivers Power US, LLC | Copenhagen, NY | New York Independent System Operator (NYIS) | 7.0 GWh | May 1984 | Dec 2025 | Water |
| Brassua Hydroelectric Project | Brassua Hydroelectric LP | Rockwood, ME | ISO New England (ISNE) | 12.6 GWh | Aug 1989 | Aug 2025 | Water |
| Slate Creek | Central Rivers Power US, LLC | Lakehead, CA | PacifiCorp West (PACW) | 12.2 GWh | Apr 1990 | Dec 2025 | Water |
| High Shoals Hydro (NC) | Central Rivers Power US, LLC | High Shoals, NC | Duke Energy Carolinas (DUK) | 2.5 GWh | Jun 1934 | Aug 2026 | Water |
| Pyrites Plant | Central Rivers Power US, LLC | Pyrites, NY | New York Independent System Operator (NYIS) | 24.9 GWh | Dec 1948 | Dec 2025 | Water |
| Koyle Ranch Hydroelectric Project | Koyle Hydro Inc | Gooding, ID | Idaho Power Company (IPCO) | 3.4 GWh | Nov 1983 | Oct 2025 | Water |
| Pontook Hydro Facility | Pontook Operating LP | Dummer, NH | ISO New England (ISNE) | 50.9 GWh | Nov 1986 | Dec 2025 | Water |
| Cosgrove Intake and Power Station | Massachusetts Water Res Auth | Clinton, MA | ISO New England (ISNE) | 646.0 MWh | Dec 1968 | Jan 2025 | Water |
| Oakdale Power Station | Massachusetts Water Res Auth | West Boylston, MA | ISO New England (ISNE) | 1.4 GWh | Apr 1951 | Dec 2025 | Water |
| Port Leyden Hydroelectric Project | Lyonsdale Hydroelectric Co., Inc. | Port Leyden, NY | New York Independent System Operator (NYIS) | 3.9 GWh | Nov 1985 | Dec 2025 | Water |
| Low Line Rapids | Lower Lowline LLC | Kimberly, ID | Idaho Power Company (IPCO) | 8.3 GWh | Jul 1990 | Dec 2025 | Water |
| New Hogan Power Plant | Modesto Irrigation District | Valley Springs, CA | California Independent System Operator (CISO) | 5.7 GWh | Mar 1989 | Dec 2025 | Water |
| Pejepscot Hydroelectric Project | Topsham Hydro Partners | Topsham, ME | ISO New England (ISNE) | 49.7 GWh | Oct 1987 | Dec 2025 | Water |
| Dietrich Drop | Wood Hydro, LLC | Shoshone, ID | Idaho Power Company (IPCO) | 11.9 GWh | Jul 1990 | Oct 2025 | Water |
| Orchard Avenue 1 | Yakima-Tieton Irrigation Dist | Yakima, WA | PacifiCorp West (PACW) | 2.9 GWh | Feb 1987 | Oct 2025 | Water |
| Pelzer Lower | Central Rivers Power US, LLC | Williamston, SC | Duke Energy Carolinas (DUK) | 3.8 GWh | Nov 1989 | Dec 2025 | Water |
| Pelzer Upper | Central Rivers Power US, LLC | Petzer, SC | Duke Energy Carolinas (DUK) | 3.8 GWh | Nov 1989 | Dec 2025 | Water |
| Piedmont Hydro Power Project | Central Rivers Power US, LLC | Piedmont, SC | Duke Energy Carolinas (DUK) | 4.8 GWh | Apr 1989 | Dec 2025 | Water |
| Black River Hydro Associates | Central Rivers Power US, LLC | Port Layden, NY | New York Independent System Operator (NYIS) | 16.5 GWh | Dec 1983 | Dec 2025 | Water |
| Twin Falls Hydro | Central Rivers Power US, LLC | North Bend, WA | Puget Sound Energy, Inc. (PSEI) | 59.3 GWh | Nov 1989 | Dec 2025 | Water |
| Lachute Hydro Upper | Central Rivers Power US, LLC | Ticonderoga, NY | New York Independent System Operator (NYIS) | 8.1 GWh | Nov 1987 | Dec 2025 | Water |
| Lachute Hydro Lower | Central Rivers Power US, LLC | Ticonderoga, NY | New York Independent System Operator (NYIS) | 8.1 GWh | Nov 1987 | Dec 2025 | Water |
| Magic Dam Hydroelectric Project | Wood Hydro, LLC | Shoshone, ID | Idaho Power Company (IPCO) | 14.3 GWh | Apr 1989 | Jul 2025 | Water |
| Sprague Hydro | Sprague Hydro LLC | Bly, OR | PacifiCorp West (PACW) | 1.1 GWh | Sep 1989 | Dec 2025 | Water |
| Barber Dam | Barber Pool Hydro LLC | Boise, ID | Idaho Power Company (IPCO) | 6.7 GWh | Jul 1990 | Dec 2025 | Water |
| Barker Lower | KEI (Maine) Power Management (III) LLC | Auburn, ME | ISO New England (ISNE) | 3.8 GWh | Mar 1986 | Dec 2025 | Water |
| Ponderosa Bailey Creek | Snow Mountain Hydro LLC | Manton, CA | California Independent System Operator (CISO) | 3.9 GWh | Feb 1990 | Dec 2025 | Water |
| Lost Creek I | Snow Mountain Hydro LLC | Burney, CA | California Independent System Operator (CISO) | 5.9 GWh | Nov 1989 | Dec 2025 | Water |
| Cove Hydroelectric | Snow Mountain Hydro LLC | Burney, CA | California Independent System Operator (CISO) | 17.4 GWh | Jan 1990 | Dec 2025 | Water |
| Burney Creek | Snow Mountain Hydro LLC | Burney, CA | California Independent System Operator (CISO) | 8.6 GWh | Feb 1990 | Dec 2025 | Water |
| Diamond Island Plant | Energen Renewables, LLC | Watertown, NY | New York Independent System Operator (NYIS) | 1.8 GWh | Dec 1913 | Dec 2025 | Water |
| Haw River Hydro | Haw River Hydro Co | Saxapahaw, NC | Duke Energy Carolinas (DUK) | 3.5 GWh | Aug 1981 | Dec 2025 | Water |
| Williams Fork Hydro Plant | Denver City & County of - (CO) | Parshall, CO | Western Area Power Administration - Rocky Mountain Region (WACM) | 12.1 GWh | Jun 1959 | Dec 2025 | Water |
| Dillon Hydro Plant | Denver City & County of - (CO) | Summit, CO | Public Service Company of Colorado (PSCO) | 11.1 GWh | Sep 1987 | Sep 2025 | Water |
| Wainiha Hydro | BBCP Kauai Operating LLC | Hanalei, HI | 18.4 GWh | Dec 1905 | Aug 2026 | Water | |
| Kalaheo Hydro | BBCP Kauai Operating LLC | Kalaheo, HI | 461.0 MWh | Dec 1927 | Dec 2025 | Water | |
| Mink Creek Hydro | Mink Creek Hydro Entity | Preston, ID | PacifiCorp East (PACE) | 8.7 GWh | Nov 1986 | Dec 2025 | Water |
| Peters Drive Plant | Farmer's Irrigation District | Hood River, OR | PacifiCorp West (PACW) | 6.9 GWh | Oct 1987 | Dec 2025 | Water |
| Copper Dam Plant | Farmer's Irrigation District | Hood River, OR | PacifiCorp West (PACW) | 14.6 GWh | Dec 1985 | Dec 2025 | Water |
| South Forks Hydro | South Forks Joint Venture | Hansen, ID | Idaho Power Company (IPCO) | 26.3 GWh | Nov 1984 | Oct 2025 | Water |
| Cornell Hydro | Cornell Renewable | Ithaca, NY | New York Independent System Operator (NYIS) | 2.9 GWh | Nov 1981 | Aug 2026 | Water |
| Townsend Hydro | Beaver Falls Municipal Auth - (PA) | New Brighton, PA | PJM Interconnection, LLC (PJM) | 14.2 GWh | Sep 1987 | Dec 2025 | Water |
| Big Creek Water Works | Big Creek Water Works Ltd | Hyampom, CA | California Independent System Operator (CISO) | 5.5 GWh | Dec 1986 | May 2026 | Water |
| Kansas River Project | Bowersock Mills & Power Co | Lawrence, KS | Southwest Power Pool (SWPP) | 26.1 GWh | Dec 1919 | Aug 2026 | Water |
| Clement Dam Hydro LLC | Eagle Creek Renewable Energy, LLC | Tilton, NH | ISO New England (ISNE) | 7.1 GWh | Nov 1984 | Oct 2025 | Water |
| North Fork Hydro Plant | Denver City & County of - (CO) | Grant, CO | Western Area Power Administration - Rocky Mountain Region (WACM) | 21.9 GWh | Dec 1987 | Dec 2025 | Water |
| West Enfield Hydro | Brookfield Black Bear Hydro, LLC | West Enfield, ME | ISO New England (ISNE) | 70.2 GWh | Mar 1988 | Dec 2025 | Water |
| Haypress | EIF Haypress LLC | Sierra City, CA | California Independent System Operator (CISO) | 17.1 GWh | Nov 1988 | Jun 2025 | Water |
| Dolgeville Hydro | EONY Generation Limited | Dolgeville, NY | New York Independent System Operator (NYIS) | 11.0 GWh | Jun 1985 | Dec 2025 | Water |
| Diana Hydroelectric | EONY Generation Limited | Harrisville, NY | New York Independent System Operator (NYIS) | 4.9 GWh | Jun 1985 | Dec 2025 | Water |
| Tulare Success Power Project | Lower Tule River Irrgtn Dist | Porterville, CA | California Independent System Operator (CISO) | 1.3 GWh | Nov 1989 | Aug 2025 | Water |
| New York State Dam Hydro | Boralex Hydro Operations Inc | Waterford, NY | New York Independent System Operator (NYIS) | 41.6 GWh | Oct 1990 | Dec 2025 | Water |
| Sissonville Hydro | Boralex Hydro Operations Inc | Potsdam, NY | New York Independent System Operator (NYIS) | 2.4 GWh | Jun 1990 | Dec 2025 | Water |
| Middle Falls Hydro | Boralex Hydro Operations Inc | Middle Falls, NY | New York Independent System Operator (NYIS) | 9.4 GWh | Aug 1989 | Dec 2025 | Water |
| Warrensburg Hydroelectric | Boralex Hydro Operations Inc | Warrensburg, NY | New York Independent System Operator (NYIS) | 9.2 GWh | Nov 1988 | Dec 2025 | Water |
| Lacomb Irrigation District | Lacomb Irrigation Dist | Lebanon, OR | PacifiCorp West (PACW) | 3.8 GWh | Nov 1986 | Dec 2025 | Water |
| Lower Saranac Hydroelectric Facility | Central Rivers Power US, LLC | Plattsburgh, NY | New York Independent System Operator (NYIS) | 18.7 GWh | Sep 1990 | Dec 2025 | Water |
| Philadlephia | EONY Generation Limited | Village of Philadelph, NY | New York Independent System Operator (NYIS) | 8.6 GWh | Sep 1986 | Dec 2025 | Water |
| Yough Hydro Power | D/R Hydro Co | Confluence, PA | PJM Interconnection, LLC (PJM) | 38.2 GWh | Nov 1989 | Dec 2025 | Water |
| Siphon Power Project | Central Oregon Irrigation Dist | Bend, OR | PacifiCorp West (PACW) | 19.0 GWh | Jul 1989 | Dec 2025 | Water |
| Theresa Plant | Energen Renewables, LLC | Theresa, NY | New York Independent System Operator (NYIS) | 3.9 GWh | Dec 1926 | Dec 2025 | Water |
| Rock Creek I | Shorock Hydro Inc | Twin Falls, ID | Idaho Power Company (IPCO) | 86.0 MWh | Aug 1983 | Dec 2025 | Water |
| Aziscohos Hydroelectric Project | Brookfield White Pine Hydro LLC | Wilson Mills, ME | ISO New England (ISNE) | 29.8 GWh | May 1988 | Dec 2025 | Water |
| Dexter Plant | Central Rivers Power US, LLC | Dexter, NY | New York Independent System Operator (NYIS) | 6.9 GWh | Dec 1930 | Dec 2025 | Water |
| West Delaware Tunnel Plant | Erie Boulevard Hydropower LP | Grahamsville, NY | New York Independent System Operator (NYIS) | 33.9 GWh | Nov 1988 | Dec 2025 | Water |
| Little Falls Hydro | Eagle Creek Renewable Energy, LLC | Little Falls, NY | New York Independent System Operator (NYIS) | 41.0 GWh | Dec 1986 | Dec 2025 | Water |
| Beebee Island Hydro Plant | Erie Boulevard Hydropower LP | Watertown, NY | New York Independent System Operator (NYIS) | 40.1 GWh | Dec 1930 | Dec 2025 | Water |
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 |