Horse Mesa
20909 E. Apache Trail, Apache Junction, AZ 85119Plant Summary Information
Horse Mesa is ranked #4 out of 8 hydroelectric power plants in Arizona in terms of total annual net electricity generation.
Horse Mesa is comprised of 4 generators and generated 12.9 GWh during the 3-month period between December 2024 to March 2025.
| Plant Name | Horse Mesa |
|---|---|
| Utility Name | Salt River Project |
| Location | Maricopa County, AZ |
| Initial Operation Date | April 1927 |
| Last Update | Mar 2025 |
| Annual Generation | 113.1 GWh |
| Annual Consumption | 196.4 k MMBtu |
| Ranked #3,121 out of 12,288 Power Plants Nationwide | |
| Ranked #322 out of 1,323 Water Power Plants Nationwide | |
| Ranked #64 out of 163 Arizona Power Plants | |
| Ranked #4 out of 8 Arizona Water Power Plants | |
| Fuel Types | Water |
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Monthly Net Generation for Horse Mesa
Horse Mesa Details
| Summary Information | |
|---|---|
| Plant Name | Horse Mesa (145) |
| Plant Address | 20909 E. Apache Trail, Apache Junction, AZ 85119 |
| Utility | Salt River Project (16572) |
| Latitude, Longitude | 33.5907, -111.344 |
| Generation Dates on File | Jan 2001 to Mar 2025 |
| Initial Operation Date | April 1927 |
| Annual Generation | 113.1 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 | Yes |
Generator HM1 Details Operating April 1927
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 9.9 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 10 MW |
| Winter Capacity | 10 MW |
| Minimum Load | 3 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | April 1927 |
| 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 |
| Multiple Fuels | No |
Generator HM2 Details Operating April 1927
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 9.9 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 10 MW |
| Winter Capacity | 10 MW |
| Minimum Load | 3 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | April 1927 |
| 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 |
| Multiple Fuels | No |
Generator HM3 Details Operating April 1927
| Technology | Conventional Hydroelectric |
|---|---|
| Prime Mover | Hydroelectric Turbine |
| Ownership | Single Owner |
| Nameplate Capacity | 11.7 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 11.7 MW |
| Winter Capacity | 11.7 MW |
| Minimum Load | 3 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
| First Operation Date | April 1927 |
| 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 |
| Planned Net Summer Capacity Uprate | 0.7 MW |
| Planned Net Winter Capacity Uprate | 0.7 MW |
| Planned Uprate | April 2025 |
| Other Planned Modifications | Yes |
| Other Modifications | April 2025 |
| Multiple Fuels | No |
Generator HM4 Details Operating June 1927
| Technology | Hydroelectric Pumped Storage |
|---|---|
| Prime Mover | Pumped Storage |
| Ownership | Single Owner |
| Nameplate Capacity | 99.8 MW |
| Nameplate Power Factor | 0.9 |
| Summer Capacity | 119 MW |
| Winter Capacity | 119 MW |
| Minimum Load | 80 MW |
| Uprate/Derate Completed | No |
| Status | Operating |
|---|---|
| First Operation Date | June 1927 |
| 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 |
| Multiple Fuels | No |
Horse Mesa Plant Owners
| Owner Name | Address | Generator | 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 |
|---|---|---|---|
| #312 | Hills Creek | Oakridge, OR | 119.8 GWh |
| #313 | Columbus | Columbus, NE | 119.5 GWh |
| #314 | Holt Dam | Tuscaloosa, AL | 119.3 GWh |
| #315 | Alcova | Alcova, WY | 119.2 GWh |
| #316 | Pardee | Valley Springs, CA | 117.8 GWh |
| #317 | New Martinsville Hannibal Hydro | New Martinsville, WV | 117.6 GWh |
| #318 | Shepaug | Southbury, CT | 116.6 GWh |
| #319 | Anson Abenaki Hydros | Madison, ME | 116.3 GWh |
| #320 | Harris Dam | Lineville, AL | 115.6 GWh |
| #321 | Murray | North Little Rock, AR | 113.5 GWh |
| #323 | Smith (NH) | Berlin, NH | 112.2 GWh |
| #324 | Minidoka | Rupert, ID | 111.7 GWh |
| #325 | Snoqualmie 2 | Snoqualmie, WA | 108.9 GWh |
| #326 | Broken Bow Dam | Broken Bow, OK | 108.9 GWh |
| #327 | Rainbow Falls Hydro | Parishville, NY | 108.7 GWh |
| #328 | Gem State | Idaho Falls, ID | 108.5 GWh |
| #329 | Petenwell | Necedah, WI | 108.4 GWh |
| #330 | Upper Salmon A | Hagerman, ID | 108.0 GWh |
| #331 | Bankhead Dam | Northport, AL | 107.8 GWh |
| #332 | Salt Springs | Pioneer, CA | 107.7 GWh |
Nearby Power Plants
Below are closest 20 power plants surrounding Horse Mesa.
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|---|---|---|---|
| Arizona State University CHP | Tempe, AZ | 42.8 GWh | 35.7 mi |
| AZ State University - Tempe Campus Solar | Tempe, AZ | 1.1 GWh | 35.6 mi |
| Banner Solar Ironwood | Queen Creek, AZ | 3.8 GWh | 29.1 mi |
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| Copper Crossing Energy and Research Cent | Florence, AZ | 5.1 GWh | 31.2 mi |
| Gilbert Solar Facility I, LLC | Gilbert, AZ | 3.8 GWh | 31 mi |
| Intel - Ocotillo Campus Solar | Chandler, AZ | 2.3 GWh | 39.7 mi |
| Jewish Community Center PV | Scottsdale, AZ | 1.8 GWh | 33.4 mi |
| Kyrene | Tempe, AZ | 939.3 GWh | 37.8 mi |
| Mesa Carport PV | Mesa, AZ | 7.5 GWh | 22.5 mi |
| Mormon Flat | Apache Junction, AZ | 57.3 GWh | 6.3 mi |
| Ocotillo | Tempe, AZ | 442.8 GWh | 34.7 mi |
| Paradise Valley H.S. PV | Phoenix, AZ | 2.1 GWh | 37.9 mi |
| Phoenix Airport East Economy Lot | Phoenix, AZ | 1.3 GWh | 38.4 mi |
| Poseidon Solar, LLC | Globe, AZ | 50.2 GWh | 30.8 mi |
| Queen Creek Solar Farm | Queen Creek, AZ | 40.7 GWh | 27.2 mi |
| Roosevelt | Roosevelt, AZ | 101.8 GWh | 11.9 mi |
| Sandstone Solar | Florence, AZ | 117.2 GWh | 38.7 mi |
| Santan | Gilbert, AZ | 5.7 TWh | 29.4 mi |
| Stewart Mountain | Phoenix, AZ | 45.7 GWh | 11.2 mi |