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Oahe USACE-Omaha · Facility profile · Hughes, SD
Hughes, SD SPP
Registry record
786.1 MW Plant nameplate capacity
Oakdale Northern Indiana Pub Serv Co · Map record · Carroll, IN Carroll, IN MISO
Registry record
11.8 MW Plant nameplate capacity
Oakdale Power Station Massachusetts Water Res Auth · Map record · Worcester, MA Worcester, MA ISO-NE
Registry record
3.5 MW Plant nameplate capacity
Ocoee 1 Tennessee Valley Authority · Map record · Polk, TN Polk, TN TVA
Registry record
19 MW Plant nameplate capacity
Ocoee 2 Tennessee Valley Authority · Map record · Polk, TN Polk, TN TVA
Registry record
23 MW Plant nameplate capacity
Ocoee 3 Tennessee Valley Authority · Map record · Polk, TN Polk, TN TVA
Registry record
28.8 MW Plant nameplate capacity
Oconto Falls Lower Eagle Creek Renewable Energy, LLC · Map record · Oconto, WI Oconto, WI MISO
Registry record
1.7 MW Plant nameplate capacity
Oconto Falls Upper Eagle Creek Renewable Energy, LLC · Map record · Oconto, WI Oconto, WI MISO
Registry record
1.1 MW Plant nameplate capacity
Ogdensburg Ampersand Ogdensburg Hydro, LLC · Map record · St Lawrence, NY St Lawrence, NY NYISO
Registry record
0.7 MW Plant nameplate capacity
Old Hickory USCE-Nashville District · Map record · Sumner, TN Sumner, TN TVA
Registry record
103.7 MW Plant nameplate capacity
Oliver Dam Georgia Power Co · Map record · Muscogee, GA Muscogee, GA Southern
Registry record
60 MW Plant nameplate capacity
Olsen Olsen Power Partners · Map record · Shasta, CA Shasta, CA CAISO
Registry record
5 MW Plant nameplate capacity
ONeill U S Bureau of Reclamation · Map record · Merced, CA Merced, CA CAISO
Registry record
25.2 MW Plant nameplate capacity
Ontario Power Generation Hydroelectric Generating Station Map record · Location in profile Location in profile IESO
Registry record
Not disclosed Plant nameplate capacity
Ontario Power Generation Hydroelectric Generating Station Map record · Location in profile Location in profile IESO
Registry record
Not disclosed Plant nameplate capacity
Ontario Power Generation Hydroelectric Generating Station Map record · Location in profile Location in profile IESO
Registry record
Not disclosed Plant nameplate capacity
Ontario Power Generation Hydroelectric Generating Station Map record · Location in profile Location in profile IESO
Registry record
Not disclosed Plant nameplate capacity
Ontario Power Generation Hydroelectric Generating Station Map record · Location in profile Location in profile IESO
Registry record
Not disclosed Plant nameplate capacity
Ontario Power Generation Hydroelectric Generating Station Map record · Location in profile Location in profile IESO
Registry record
Not disclosed Plant nameplate capacity
Ontario Power Generation Hydroelectric Generating Station Map record · Location in profile Location in profile IESO
Registry record
Not disclosed Plant nameplate capacity
Orono B Brookfield Black Bear Hydro, LLC · Map record · Penobscot, ME Penobscot, ME ISO-NE
Registry record
3.9 MW Plant nameplate capacity
Orono Hydro Station Brookfield Black Bear Hydro, LLC · Map record · Penobscot, ME Penobscot, ME ISO-NE
Registry record
2.7 MW Plant nameplate capacity
Osage Dam Union Electric Co - (MO) · Facility profile · Miller, MO Miller, MO MISO
Registry record
208 MW Plant nameplate capacity
Oswegatchie Erie Boulevard Hydropower LP · Map record · St Lawrence, NY St Lawrence, NY NYISO
Registry record
1.8 MW Plant nameplate capacity
Oswego Falls East Erie Boulevard Hydropower LP · Map record · Oswego, NY Oswego, NY NYISO
Registry record
6 MW Plant nameplate capacity
Oswego Falls West Erie Boulevard Hydropower LP · Map record · Oswego, NY Oswego, NY NYISO
Registry record
1 MW Plant nameplate capacity
Otis Hydro Eagle Creek Renewable Energy, LLC · Map record · Franklin, ME Franklin, ME ISO-NE
Registry record
10.2 MW Plant nameplate capacity
Ottauquechee Hydro Green Mountain Power Corp · Map record · Windsor, VT Windsor, VT ISO-NE
Registry record
1.8 MW Plant nameplate capacity
Ottumwa City of City of Ottumwa - (IA) · Map record · Wapello, IA Wapello, IA MISO
Registry record
2.2 MW Plant nameplate capacity
Oxbow (CA) Placer County Water Agency - (CA) · Map record · Placer, CA Placer, CA CAISO
Registry record
6.1 MW Plant nameplate capacity
Oxford Dam Duke Energy Carolinas, LLC · Map record · Catawba, NC Catawba, NC Duke Carolinas
Registry record
36 MW Plant nameplate capacity
Ozark Beach Empire District Electric Co · Facility profile · Taney, MO Taney, MO SPP
Registry record
16 MW Plant nameplate capacity
Packwood Energy Northwest - Packwood · Map record · Lewis, WA Lewis, WA BPA
Registry record
27.5 MW Plant nameplate capacity
Palisades Dam U S Bureau of Reclamation · Facility profile · Bonneville, ID Bonneville, ID BPA
Registry record
176.4 MW Plant nameplate capacity
Pardee East Bay Municipal Util Dist - (CA) · Map record · Calaveras, CA Calaveras, CA CAISO
Registry record
23.6 MW Plant nameplate capacity
Parishville Erie Boulevard Hydropower LP · Map record · St Lawrence, NY St Lawrence, NY NYISO
Registry record
3 MW Plant nameplate capacity
Park Mill Eagle Creek Renewable Energy, LLC · Map record · Marinette, WI Marinette, WI MISO
Registry record
2.1 MW Plant nameplate capacity
Parker Merced Irrigation District · Map record · Merced, CA Merced, CA CAISO
Registry record
2.7 MW Plant nameplate capacity
Pawtucket Hydroelectric Project Relevate Power Management LLC · Map record · Providence, RI Providence, RI ISO-NE
Registry record
1.6 MW Plant nameplate capacity
Peavy Falls Wisconsin Electric Power Co · Map record · Iron, MI Iron, MI MISO
Registry record
12 MW Plant nameplate capacity
Pejepscot Hydroelectric Project Topsham Hydro Partners · Map record · Sagadahoc, ME Sagadahoc, ME ISO-NE
Registry record
13.5 MW Plant nameplate capacity
Pelzer Lower Central Rivers Power US, LLC · Map record · Anderson, SC Anderson, SC Duke Carolinas
Registry record
3.3 MW Plant nameplate capacity
Pelzer Upper Central Rivers Power US, LLC · Map record · Anderson, SC Anderson, SC Duke Carolinas
Registry record
2 MW Plant nameplate capacity
Pembroke Hydro Eagle Creek Renewable Energy, LLC · Map record · Merrimack, NH Merrimack, NH ISO-NE
Registry record
2.7 MW Plant nameplate capacity
Penacook Lower Falls Briar-Hydro Associates · Map record · Merrimack, NH Merrimack, NH ISO-NE
Registry record
4.6 MW Plant nameplate capacity
Penacook Upper Falls Hydro Briar-Hydro Associates · Map record · Merrimack, NH Merrimack, NH ISO-NE
Registry record
3.4 MW Plant nameplate capacity
Pensacola Grand River Dam Authority · Facility profile · Mayes, OK Mayes, OK SPP
Registry record
129.6 MW Plant nameplate capacity
Pepperell Hydro Power Plant Eagle Creek Renewable Energy, LLC · Map record · Middlesex, MA Middlesex, MA ISO-NE
Registry record
2.2 MW Plant nameplate capacity
Perris Metropolitan Water District of S CA · Map record · Riverside, CA Riverside, CA CAISO
Registry record
7.9 MW Plant nameplate capacity
Arizona: no hydroelectric power plants Colorado: 31 hydroelectric power plants Florida: 1 hydroelectric power plants Georgia: 27 hydroelectric power plants Indiana: 6 hydroelectric power plants Kansas: 1 hydroelectric power plants Maine: 47 hydroelectric power plants Massachusetts: 30 hydroelectric power plants Minnesota: 22 hydroelectric power plants New Jersey: 2 hydroelectric power plants North Carolina: 30 hydroelectric power plants North Dakota: 1 hydroelectric power plants Oklahoma: 6 hydroelectric power plants Pennsylvania 18 hydroelectric power plants South Dakota 4 hydroelectric power plants Texas 16 hydroelectric power plants Wyoming: 14 hydroelectric power plants Connecticut: 14 hydroelectric power plants Missouri 3 hydroelectric power plants West Virginia: 12 hydroelectric power plants Illinois: 4 hydroelectric power plants New Mexico: 4 hydroelectric power plants Arkansas: 9 hydroelectric power plants California 168 hydroelectric power plants Delaware: no hydroelectric power plants District of Columbia: no hydroelectric power plants Hawaii: no hydroelectric power plants Iowa: 4 hydroelectric power plants Kentucky: 9 hydroelectric power plants Maryland: 2 hydroelectric power plants Michigan 51 hydroelectric power plants Mississippi: no hydroelectric power plants Montana: 6 hydroelectric power plants New Hampshire: 31 hydroelectric power plants New York 157 hydroelectric power plants Ohio: 4 hydroelectric power plants Oregon 15 hydroelectric power plants Tennessee: 29 hydroelectric power plants Utah: 4 hydroelectric power plants Virginia 21 hydroelectric power plants Washington 21 hydroelectric power plants Wisconsin: 63 hydroelectric power plants Nebraska: 10 hydroelectric power plants South Carolina: 23 hydroelectric power plants Idaho: 11 hydroelectric power plants Nevada: no hydroelectric power plants Vermont: 45 hydroelectric power plants Louisiana: 1 hydroelectric power plants Rhode Island: 3 hydroelectric power plants VT Vermont: 45 hydroelectric power plants NH New Hampshire: 31 hydroelectric power plants MA Massachusetts: 30 hydroelectric power plants RI Rhode Island: 3 hydroelectric power plants CT Connecticut: 14 hydroelectric power plants NJ New Jersey: 2 hydroelectric power plants DE Delaware: no hydroelectric power plants MD Maryland: 2 hydroelectric power plants DC District of Columbia: no hydroelectric power plants
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Sources and coverage Hydropower directories use registered plants in supported power markets. Pumped-storage operating roles and generation periods remain identified in the facility record.
Geographic directories use the state and city recorded for each asset. Organization groups preserve published names and roles. Utility groups use the utility named in the facility record; individual profiles distinguish service agreements from service-territory matches. Each profile carries the sources and dates behind its facts.