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Transmission Line Projects

Grid Improvements for More Reliable Service

Transmission lines link substations and other facilities to move electrical energy at high voltages over long distances.

TEP’s proposed transmission line projects are designed to enhance our local energy grid while preparing for our community’s future energy needs. Public outreach is an important part of TEP’s planning process. Click below to learn more about current projects.

Tucson Electric Power: Kino to DeMoss-Petrie 138 Kilovolt Transmission Line

Kino to DeMoss-Petrie 138 Kilovolt Transmission Line

TEP is developing plans to strengthen electric reliability for customers in central Tucson and help satisfy growing energy needs in our community.
Tucson Electric Power: Irvington-East Loop 138 Kilovolt (kV) Transmission Line

Irvington-East Loop 138 Kilovolt (kV) Transmission Line

TEP is preparing for construction of a new transmission line to help Davis-Monthan Air Force Base satisfy its energy resiliency requirements and improve electric reliability for customers in Tucson.
Tucson Electric Power: Irvington to Kino 138-Kilovolt Transmission Line and Kino Substation Projects

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

TEP is building a new 138-kilovolt (kV) transmission line and substation and upgrading existing facilities in the area of South Kino Parkway and East 36th Street.
Tucson Electric Power: Sonoran Substation to Wilmot Energy Center 138 Kilovolt Transmission Line

Sonoran Substation to Wilmot Energy Center 138 Kilovolt Transmission Line

TEP is building a new 138-kilovolt (kV) substation, switchyard, and transmission line south of Tucson to support what will become our largest local community-scale solar array and battery storage system.