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

New and improved transmission resources for continued reliability.

Tucson Electric Power (TEP) is 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 around South Kino Parkway and East 36th Street.

The transmission line is the first of several system improvements designed to provide additional transmission capacity in the central portion of the Tucson metro area. Phase 1 will extend approximately 4 miles from TEP’s Irvington Campus to the Kino Substation, which will would occupy approximately 3.5 acres at the southeast corner of South Kino Parkway and East 36th Street.

The Arizona Power Plant and Transmission Line Siting Committee issued a Certificate of Environmental Compatibility (CEC) during a public hearing held June 12-14, 2018 in Tucson. The Arizona Corporation Commission reviewed and approved the CEC in August 2018.
Construction of the line and the substation is scheduled to continue through mid-2020. Additional improvements to TEP's transmission and distribution equipment near Kino and 36th are scheduled to continue through 2021. Read below for more details.

Public Outreach Materials (Line Siting)

TEP has made continual efforts to educate members of the community and the public about this project through briefings and presentations with community leaders, public open house meetings, stakeholder workshops, newsletters and other channels.

System Upgrades near Kino and 36th (2020-2021)

In addition to construction of the new transmission line and new substation, TEP crews will be perform system upgrades in the area of South Kino Parkway and East 36th Street. These improvements are part of TEP’s continual efforts to strengthen electric reliability for customers and prepare for the future energy needs of our community. Traffic controls and other safety measures will be used during the duration of this work.


Answers to Questions about Underground Electric Lines

Most of TEP's electrical facilities are installed above ground, but some lower-voltage distribution lines are installed underground. To learn more, please review answers to frequently asked questions about the potential underground installation of transmission lines and distribution lines.