Vail T3 Addition – 345/138kV Substation

Tucson, Arizona
Tucson Electric Power
Year Completed: 

The Vail T-3 Substation project featured the addition of two bays within the 345kV yard and one bay in the 138kV yard, as well as the reconstruction of one 345kV bay at Vail Substation.

The project included the replacement and installation of dead-end structures, SF6 circuit breakers, disconnect switches, rigid and wire bus, and all control cable. Additionally, Atkinson partnered with a specialty contractor to complete the foundations, trench, and conduit work.

Construction activities were performed while the yard was energized and included a complex outage schedule. The team successfully overcame these challenges, ensuring the safety of those on site.