Horse Mesa

20909 E. Apache Trail, Apache Junction, AZ 85119

Plant Summary Information

Horse Mesa is ranked #5 out of 9 hydroelectric power plants in Arizona in terms of total annual net electricity generation.

Horse Mesa is comprised of 4 generators and generated 50.9 GWh during the 3-month period between May 2024 to August 2024.

Plant Name	Horse Mesa
Utility Name	Salt River Project
Location	Maricopa County, AZ
Initial Operation Date	April 1927
Last Update	Aug 2024
Annual Generation	82.7 GWh
Annual Consumption	124.2 k MMBtu
Ranked #3,391 out of 11,835 Power Plants Nationwide
Ranked #399 out of 1,371 Water Power Plants Nationwide
Ranked #68 out of 155 Arizona Power Plants
Ranked #5 out of 9 Arizona Water Power Plants
Fuel Types	Water

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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 Aug 2024
Initial Operation Date	April 1927
Annual Generation	82.7 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

* Data obtained from the 2023 EIA 860 Report

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

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

Technology	Conventional Hydroelectric
Prime Mover	Hydroelectric Turbine
Ownership	Single Owner
Nameplate Capacity	9.9 MW
Nameplate Power Factor	0.9
Summer Capacity	11 MW
Winter Capacity	11 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	No
Multiple Fuels	No

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

Owner Name	Address	Generator	Ownership
*We couldn't locate any owners for this plant*

Power plants with a similar annual net generation from Water.

Rank	Plant Name	Plant Location	Annual Generation
#389	Oxford Dam	Conover, NC	87.3 GWh
#390	Copco 2	Hornbrook, CA	87.0 GWh
#391	Dearborn	Great Falls, SC	86.9 GWh
#392	Allegheny Hydro No 9	Cowansville, PA	86.7 GWh
#393	Lake Lynn Hydro Station	Lake Lynn, PA	86.5 GWh
#394	Schaghticoke	Schaghticoke, NY	86.4 GWh
#395	Bucks Creek	Storrie, CA	84.5 GWh
#396	River Mill	Estacada, OR	83.8 GWh
#397	St Croix Falls	St Croix Falls, WI	83.1 GWh
#398	Muck Valley Hydroelectric	NA, CA	82.8 GWh
#400	Beardsley	None, CA	82.7 GWh
#401	West Point PH	Pioneer, CA	81.9 GWh
#402	Upper Salmon A	Hagerman, ID	81.7 GWh
#403	Iron Gate	Hornbrook, CA	81.5 GWh
#404	Boysen	Thermopolis, WY	81.3 GWh
#405	Jeffrey	Brady, NE	81.3 GWh
#406	Prospect	Prospect, NY	81.1 GWh
#407	Ocoee 2	Benton, TN	80.7 GWh
#408	Glendo	Glendo, WY	80.6 GWh
#409	Blue Lake Hydro	Sitka, AK	80.3 GWh

Below are closest 20 power plants surrounding Horse Mesa.

Plant Name	Plant Location	Annual Generation	Distance
Arizona State University CHP	Tempe, AZ	43.1 GWh	35.7 mi
AZ State University - Tempe Campus Solar	Tempe, AZ	2.6 GWh	35.6 mi
Bonnybrooke PV	Florence, AZ	118.7 GWh	37.2 mi
Gilbert Solar Facility I, LLC	Gilbert, AZ	3.6 GWh	31 mi
Intel - Ocotillo Campus Solar	Chandler, AZ	10.7 GWh	39.7 mi
Jewish Community Center PV	Scottsdale, AZ	2.0 GWh	33.4 mi
Kyrene	Tempe, AZ	1.1 TWh	37.8 mi
Mesa Carport PV	Mesa, AZ	8.1 GWh	22.5 mi
Mormon Flat	Apache Junction, AZ	52.0 GWh	6.3 mi
Ocotillo	Tempe, AZ	583.7 GWh	34.7 mi
Paradise Valley H.S. PV	Phoenix, AZ	2.0 GWh	37.9 mi
Phoenix Airport East Economy Lot	Phoenix, AZ	848.0 MWh	38.4 mi
Phoenix Airport Rental Car Center	Phoenix, AZ	2.7 GWh	41.9 mi
Poseidon Solar, LLC	Globe, AZ	51.4 GWh	30.8 mi
Queen Creek Solar Farm	Queen Creek, AZ	46.4 GWh	27.2 mi
Roosevelt	Roosevelt, AZ	98.8 GWh	11.9 mi
Sandstone Solar	Florence, AZ	111.1 GWh	38.7 mi
Santan	Gilbert, AZ	6.0 TWh	29.4 mi
South Consolidated	Phoenix, AZ	29.0 MWh	26.6 mi
Stewart Mountain	Phoenix, AZ	35.0 GWh	11.2 mi