H Wilson Sundt Generating Station

3950 E Irvington Road, Tucson, AZ 85714

Plant Summary Information

H Wilson Sundt Generating Station is ranked #19 out of 168 power plants in Arizona in terms of total annual net electricity generation.

H Wilson Sundt Generating Station is comprised of 14 generators and generated 726.6 GWh during the 3-month period between June 2025 to September 2025.

Plant Name	H Wilson Sundt Generating Station
Utility Name	Tucson Electric Power Co
Location	Pima County, AZ
Initial Operation Date	December 1958
Last Update	Sep 2025
Annual Generation	1.8 TWh
Annual Consumption	21.2 M MMBtu
Ranked #532 out of 12,539 Power Plants Nationwide
Ranked #329 out of 2,243 Natural Gas Power Plants Nationwide
Ranked #19 out of 168 Arizona Power Plants
Ranked #15 out of 35 Arizona Natural Gas Power Plants
Fuel Types	Natural Gas

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Monthly Net Generation for H Wilson Sundt Generating Station

H Wilson Sundt Generating Station Details

Summary Information
Plant Name	H Wilson Sundt Generating Station (126)
Plant Address	3950 E Irvington Road, Tucson, AZ 85714
Utility	Tucson Electric Power Co (24211)
Latitude, Longitude	32.16, -110.9047
Generation Dates on File	Jan 2001 to Sep 2025
Initial Operation Date	December 1958
Annual Generation	1.8 TWh
Fuel Types	Natural Gas

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	Tucson Electric Power Company (TEPC)
NAICS Code	Utilities (22)
Sector	Electric Utility (1)
Water Source	Wells
Ash Impoundment	No
Transmission / Distribution Owner	Tucson Electric Power Co (24211) AZ
Grid Voltage	138.00 kV
Energy Storage	No

Natural Gas Information
Pipeline Name	EL PASO NATURAL GAS COMPANY LLC
Natural Gas Storage	No

* Data obtained from the 2024 EIA 860 Report

Generator ST3 Details Operating June 1962

Technology	Natural Gas Steam Turbine
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	113.6 MW
Nameplate Power Factor	0.85
Summer Capacity	104 MW
Winter Capacity	104 MW
Minimum Load	25 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	June 1962
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Startup Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	OVER
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator 4 Details Operating July 1967

Technology	Natural Gas Steam Turbine
Prime Mover	Steam Turbine
Ownership	Single Owner
Nameplate Capacity	173.3 MW
Nameplate Power Factor	0.85
Summer Capacity	156 MW
Winter Capacity	156 MW
Minimum Load	26 MW
Uprate/Derate Completed	No
Status	Operating
First Operation Date	July 1967

Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas / Landfill Gas
Startup Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	OVER
Pulverized Coal Technology	No
Multiple Fuels	Yes
Cofire Fuels	Yes
Switch Between Oil And Natural Gas	No

Multifuel Details
Cofire Energy Source	NG / LFG

Generator GT1 Details Operating December 1972

Technology	Natural Gas Fired Combustion Turbine
Prime Mover	Combustion Turbine
Ownership	Single Owner
Nameplate Capacity	27 MW
Nameplate Power Factor	0.85
Summer Capacity	24 MW
Winter Capacity	26.8 MW
Minimum Load	5 MW
Uprate/Derate Completed	No
Status	Operating
First Operation Date	December 1972

Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas / Distillate Fuel Oil
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	1H
Subcritical Technology	No
Multiple Fuels	Yes
Cofire Fuels	No
Switch Between Oil And Natural Gas	Yes

Multifuel Details
Switch When Operating	Yes
Net Summer Capacity With Natural Gas	24 MW
Net Winter Capacity With Natural Gas	26.8 MW
Net Summer Capacity With Oil	24 MW
Net Winter Capacity With Oil	26.8 MW
Time To Switch From Gas To Oil	1H
Time To Switch From Oil To Gas	1H
Factors That Limit Switching	No

Generator GT2 Details Operating December 1972

Technology	Natural Gas Fired Combustion Turbine
Prime Mover	Combustion Turbine
Ownership	Single Owner
Nameplate Capacity	27 MW
Nameplate Power Factor	0.85
Summer Capacity	24 MW
Winter Capacity	26.8 MW
Minimum Load	5 MW
Uprate/Derate Completed	No
Status	Operating
First Operation Date	December 1972

Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas / Distillate Fuel Oil
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Subcritical Technology	No
Multiple Fuels	Yes
Cofire Fuels	No
Switch Between Oil And Natural Gas	Yes

Multifuel Details
Switch When Operating	Yes
Net Summer Capacity With Natural Gas	24 MW
Net Winter Capacity With Natural Gas	26.8 MW
Net Summer Capacity With Oil	24 MW
Net Winter Capacity With Oil	26.8 MW
Time To Switch From Gas To Oil	1H
Time To Switch From Oil To Gas	1H
Factors That Limit Switching	No

Generator RIC10 Details Operating December 2019

Technology	Natural Gas Internal Combustion Engine
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	18.8 MW
Nameplate Power Factor	0.8
Summer Capacity	18.2 MW
Winter Capacity	18.7 MW
Minimum Load	4.7 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	December 2019
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator RIC6 Details Operating December 2019

Technology	Natural Gas Internal Combustion Engine
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	18.8 MW
Nameplate Power Factor	0.8
Summer Capacity	18.2 MW
Winter Capacity	18.7 MW
Minimum Load	4.7 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	December 2019
Combined Heat & Power	Yes
Sector Name	Electric Utility (1)
Topping Or Bottoming	T
Energy Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator RIC7 Details Operating December 2019

Technology	Natural Gas Internal Combustion Engine
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	18.8 MW
Nameplate Power Factor	0.8
Summer Capacity	18.2 MW
Winter Capacity	18.7 MW
Minimum Load	4.7 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	December 2019
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator RIC8 Details Operating December 2019

Technology	Natural Gas Internal Combustion Engine
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	18.8 MW
Nameplate Power Factor	0.8
Summer Capacity	18.2 MW
Winter Capacity	18.7 MW
Minimum Load	4.7 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	December 2019
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator RIC9 Details Operating December 2019

Technology	Natural Gas Internal Combustion Engine
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	18.8 MW
Nameplate Power Factor	0.8
Summer Capacity	18.2 MW
Winter Capacity	18.7 MW
Minimum Load	4.7 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	December 2019
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator RIC1 Details Operating March 2020

Technology	Natural Gas Internal Combustion Engine
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	18.8 MW
Nameplate Power Factor	0.8
Summer Capacity	18.2 MW
Winter Capacity	18.7 MW
Minimum Load	4.7 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	March 2020
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator RIC2 Details Operating March 2020

Technology	Natural Gas Internal Combustion Engine
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	18.8 MW
Nameplate Power Factor	0.8
Summer Capacity	18.2 MW
Winter Capacity	18.7 MW
Minimum Load	4.7 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	March 2020
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator RIC3 Details Operating March 2020

Technology	Natural Gas Internal Combustion Engine
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	18.8 MW
Nameplate Power Factor	0.8
Summer Capacity	18.2 MW
Winter Capacity	18.7 MW
Minimum Load	4.7 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	March 2020
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator RIC4 Details Operating March 2020

Technology	Natural Gas Internal Combustion Engine
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	18.8 MW
Nameplate Power Factor	0.8
Summer Capacity	18.2 MW
Winter Capacity	18.7 MW
Minimum Load	4.7 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	March 2020
Combined Heat & Power	No
Sector Name	Electric Utility (1)
Energy Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

Generator RIC5 Details Operating March 2020

Technology	Natural Gas Internal Combustion Engine
Prime Mover	Internal Combustion Engine
Ownership	Single Owner
Nameplate Capacity	18.8 MW
Nameplate Power Factor	0.8
Summer Capacity	18.2 MW
Winter Capacity	18.7 MW
Minimum Load	4.7 MW
Uprate/Derate Completed	No
Status	Operating

First Operation Date	March 2020
Combined Heat & Power	Yes
Sector Name	Electric Utility (1)
Topping Or Bottoming	T
Energy Source	Natural Gas
Solid Fuel Gasification	No
Carbon Capture Technology	No
Time From Cold Shutdown To Full Load	10M
Multiple Fuels	No
Switch Between Oil And Natural Gas	No

H Wilson Sundt Generating Station 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 Natural Gas.

Rank	Plant Name	Plant Location	Annual Generation
#319	Seminole (OK)	Konowa, OK	1.9 TWh
#320	Watson Cogeneration	Carson, CA	2.3 TWh
#321	Apache Station	Cochise, AZ	2.4 TWh
#322	Jackson Generating Station	Jackson, MI	1.9 TWh
#323	Brooklyn Navy Yard Cogeneration	Brooklyn, NY	1.9 TWh
#324	Houston Chemical Complex Battleground	Houston, TX	1.9 TWh
#325	AES Alamitos Energy Center	Long Beach, CA	1.9 TWh
#326	Edwardsport	Edwardsport, IN	3.6 TWh
#327	Texas City Power Plant	Texas City, TX	1.9 TWh
#328	Hopewell Cogeneration	Hopewell, VA	1.9 TWh
#330	Sunrise Power LLC	Fellows, CA	1.8 TWh
#331	Bowline Point	West Haverstraw, NY	1.9 TWh
#332	Freeport Energy	Freeport, TX	1.8 TWh
#333	Gila River Power Block 1	Gila Bend, AZ	1.8 TWh
#334	Cunningham	Hobbs, NM	1.8 TWh
#335	Otay Mesa Generating Project	San Diego, CA	1.8 TWh
#336	La Paloma Generating Plant	McKittrick, CA	1.8 TWh
#337	Noblesville	Noblesville, IN	1.8 TWh
#338	Mountainview Generating Station	Redlands, CA	1.8 TWh
#339	Urquhart	Beech Island, SC	1.8 TWh

Nearby Power Plants

Below are closest 20 power plants surrounding H Wilson Sundt Generating Station.

Plant Name	Plant Location	Annual Generation	Distance
Actus Lend Lease DMAFB	Tucson, AZ	2.5 GWh	2.9 mi
Amazon TUS2	Tucson, AZ	5.5 GWh	4.4 mi
Amphitheater High School Solar	Tucson, AZ	1.8 GWh	8.6 mi
Cogeneration 1	Tucson, AZ	47.8 GWh	5.6 mi
Cogeneration 2	Tucson, AZ	40.9 GWh	6.1 mi
Cogenra - TEP	Tucson, AZ	1.9 GWh	6.7 mi
Davis Monthan AFB (AZ) West Airfield	Tucson, AZ	30.2 GWh	1 mi
Demoss Petrie	Tucson, AZ	2.5 GWh	8.2 mi
FRB Solar Farm	Tucson, AZ	4.1 GWh	5.9 mi
Gato Montes Solar, LLC	Tucson, AZ	7.4 GWh	6.4 mi
Iron Horse Battery Storage Hybrid	Tucson, AZ	4.7 GWh	6.6 mi
Pima Community College	Tucson, AZ	2.1 GWh	5.2 mi
Pima Community College - East Campus	Tucson, AZ	2.8 GWh	5.1 mi
Prairie Fire	Tucson, AZ	7.8 GWh	5.8 mi
Raptor Ridge	Tucson, AZ	33.8 GWh	1.8 mi
Tech Park Solar	Tucson, AZ	11.8 GWh	6.7 mi
TJX Tucson	Tucson, AZ	2.2 GWh	2.5 mi
UASTP I	Tucson, AZ	1.6 GWh	7 mi
Valencia Solar	Tucson, AZ	24.6 GWh	2.4 mi
Wilmot Energy Center LLC	Tucson, AZ	272.4 GWh	8.1 mi