Stewart Mountain
P.O. Box 52025 PAB 221, Phoenix, AZ 85072Plant Summary Information
Stewart Mountain is ranked #7 out of 8 hydroelectric power plants in Arizona in terms of total annual net electricity generation.
Stewart Mountain is comprised of 1 generator and generated 3.4 GWh during the 3-month period between September 2025 to December 2025.
| Plant Name | Stewart Mountain |
|---|---|
| Utility Name | Salt River Project |
| Location | Maricopa County, AZ |
| Initial Operation Date | March 1930 |
| Last Update | Dec 2025 |
| Annual Generation | 36.6 GWh |
| Annual Consumption | 124.8 k MMBtu |
| Ranked #4,661 out of 13,301 Power Plants Nationwide | |
| Ranked #550 out of 1,316 Water Power Plants Nationwide | |
| Ranked #108 out of 180 Arizona Power Plants | |
| Ranked #7 out of 8 Arizona Water Power Plants | |
| Fuel Types | Water |
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Monthly Net Generation for Stewart Mountain
Monthly Plant Fuel Consumption for Stewart Mountain
Stewart Mountain Details
| Summary Information | |
|---|---|
| Plant Name | Stewart Mountain (150) |
| Plant Address | P.O. Box 52025 PAB 221, Phoenix, AZ 85072 |
| Utility | Salt River Project (16572) |
| Latitude, Longitude | 33.5661, -111.536 |
| Generation Dates on File | Jan 2001 to Dec 2025 |
| Initial Operation Date | March 1930 |
| Annual Generation | 36.6 GWh |
| Fuel Types | Water |
| Federal Energy Regulatory Commission (FERC) Information | |
| FERC Cogeneration Status | No |
| FERC Small Power Producer Status | No |
| FERC Exempt Wholesale Generator Status | No |
| Regulatory Information | |
|---|---|
| Regulatory Status | Regulated |
| NERC Region | WECC |
| Balancing Authority | Salt River Project (SRP) |
| NAICS Code | Utilities (22) |
| Sector | Electric Utility (1) |
| Water Source | Salt River |
| Ash Impoundment | No |
| Transmission / Distribution Owner | Salt River Project (16572) AZ |
| Grid Voltage | 115.00 kV |
| Energy Storage | No |
Generator SM Details Operating March 1930
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 13 MW |
| Nameplate Power Factor | 0.8 |
| Summer Capacity | 13 MW |
| Winter Capacity | 13 MW |
| Minimum Load | 0.1 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | March 1930 |
|---|---|
| Combined Heat & Power | No |
| Sector Name | Electric Utility (1) |
| Energy Source | Water |
| Solid Fuel Gasification | No |
| Carbon Capture Technology | No |
| Time From Cold Shutdown To Full Load | 10M |
| Other Planned Modifications | No |
| Multiple Fuels | No |
Stewart Mountain Plant Owners
| Owner Name | Address | Ownership | We couldn't locate any owners for this plant |
|---|
Power Plants with Similar Net Generation
Power plants with a similar annual net generation from Water.
| Rank | Plant Name | Plant Location | Annual Generation |
|---|---|---|---|
| #540 | PHP 1 | Sandy, OR | 37.6 GWh |
| #541 | Fond Du Lac | Duluth, MN | 37.6 GWh |
| #542 | Moose River | Lyons Falls, NY | 37.1 GWh |
| #543 | Foothill | Sylmar, CA | 37.1 GWh |
| #544 | Twin Falls (WI) | Florence, WI | 37.0 GWh |
| #545 | Rollins | Colfax, CA | 36.9 GWh |
| #546 | Dells | Eau Claire, WI | 36.9 GWh |
| #547 | Granite Shoals | Marble Falls, TX | 36.8 GWh |
| #548 | Hydro Kennebec Project | Winslow, ME | 36.8 GWh |
| #549 | Essex Junction 19 | Essex Junction, VT | 37.0 GWh |
| #551 | Marys Lake | Estes Park, CO | 36.5 GWh |
| #552 | Du Bay | Eau Pleine, WI | 36.5 GWh |
| #553 | Ayers Island | Bristol, NH | 36.3 GWh |
| #554 | Milford Hydro Station | Milford, ME | 35.9 GWh |
| #555 | Bishop Creek 4 | Bishop, CA | 35.8 GWh |
| #556 | Allegheny No 6 Hydro Station | Ford City, PA | 35.6 GWh |
| #557 | Port Edwards Mill | Port Edwards, WI | 35.6 GWh |
| #558 | Gay Robinson | Kaumakani, HI | 35.6 GWh |
| #559 | Allegheny No. 5 Hydro Station | Schenley, PA | 35.4 GWh |
| #560 | Yonah | Toccoa, GA | 35.4 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Stewart Mountain.
| Plant Name | Plant Location | Annual Generation | Distance |
|---|---|---|---|
| Arizona State University CHP | Tempe, AZ | 40.6 GWh | 24.8 mi |
| AZ State University - Tempe Campus Solar | Tempe, AZ | 1.9 GWh | 24.6 mi |
| Banner Solar Ironwood | Queen Creek, AZ | 4.0 GWh | 24.5 mi |
| Box Canyon (AZ) | Florence, AZ | 863.4 GWh | 29.6 mi |
| Copper Crossing Energy and Research Cent | Florence, AZ | 4.3 GWh | 28.6 mi |
| Gilbert Solar Facility I, LLC | Gilbert, AZ | 4.0 GWh | 21.1 mi |
| Horse Mesa | Apache Junction, AZ | 74.1 GWh | 11.2 mi |
| Intel - Ocotillo Campus Solar | Chandler, AZ | 3.1 GWh | 30.3 mi |
| Jewish Community Center PV | Scottsdale, AZ | 2.0 GWh | 22.5 mi |
| Kyrene | Tempe, AZ | 1.2 TWh | 27.2 mi |
| Mesa Carport PV | Mesa, AZ | 6.2 GWh | 15.6 mi |
| Mormon Flat | Apache Junction, AZ | 34.3 GWh | 5.4 mi |
| Ocotillo | Tempe, AZ | 562.7 GWh | 23.8 mi |
| Paradise Valley H.S. PV | Phoenix, AZ | 2.1 GWh | 27.2 mi |
| Phoenix Airport East Economy Lot | Phoenix, AZ | 777.0 MWh | 27.4 mi |
| Phoenix Airport Rental Car Center | Phoenix, AZ | 4.2 GWh | 30.8 mi |
| Poseidon Solar, LLC | Globe, AZ | 48.8 GWh | 28.2 mi |
| Queen Creek Solar Farm | Queen Creek, AZ | 34.8 GWh | 21.1 mi |
| Roosevelt | Roosevelt, AZ | 76.0 GWh | 22.7 mi |
| Santan | Gilbert, AZ | 5.2 TWh | 20.3 mi |