Substation at sunset

Projects

Transmission Line Projects

Kino to DeMoss-Petrie 138 Kilovolt Transmission Line

Tucson Electric Power (TEP) is developing plans for a new transmission line to help satisfy growing energy needs, support the University of Arizona and University Medical Center Tucson – Banner, and strengthen electric reliability for customers within and near the project study area.

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Irvington-East Loop 138 Kilovolt (kV) Transmission Line

Tucson Electric Power (TEP) is developing plans for a new transmission line to help serve growing energy needs. The project would help Davis-Monthan Air Force Base satisfy its energy resiliency requirements and improve electric reliability for customers in Tucson.

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Irvington to Kino 138-Kilovolt Transmission Line and Kino Substation Projects

Tucson Electric Power (TEP) has proposed building a new 138-kilovolt (kV) transmission line and substation and upgrading existing facilities in the City of Tucson to strengthen electric reliability for customers and, in particular, to meet growing energy needs in the area of South Kino Parkway and East 36th Street.

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Sonoran Substation to Wilmot Energy Center 138 Kilovolt Transmission Line

Tucson Electric Power (TEP) has proposed building a new 138-kilovolt (kV) substation, switchyard, and transmission line south of Tucson to strengthen electric reliability for customers, meet future energy needs in the area and support what will become TEP’s largest local community-scale solar array and battery storage system.

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Irvington Campus Modernization

Efficient natural gas generators at our largest local power plant will support the expansion of TEP's wind and solar energy resources.

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Rosemont 138 kV

Project contingent on mine approval.

The Arizona Corporation Commission (ACC) voted unanimously in May 2012 to allow construction of a new transmission line to serve the proposed Rosemont Copper mine in the Santa Rita Mountains southeast of Tucson.

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FAQ

Transmission lines are necessary to allow energy to flow from power plants to major substations.

TEP is committed to strengthening the transmission system, which is the backbone of our electrical grid, and allows customers to power their homes and businesses.

Substation Projects

Harrison Substation

TEP has proposed building a new 138-kilovolt (kV) substation at the northwest corner of North Harrison Road and East Speedway Boulevard that will help ensure continued reliability and satisfy customers' future energy needs.

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Cottonwood Substation

TEP plans to build a new 138 kilovolt (kV) substation and upgrade existing facilities in the City of Tucson to strengthen electric reliability for customers and meet growing electric demand in southwest Tucson.

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