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Substation Projects
Grid Improvements for More Reliable Service
Substations change the voltage of electric facilities for transmission, distribution and delivery of electric service to area customers.
TEP’s proposed substation 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.
TEP plans to build a new 138 kilovolt (kV) substation and upgrade existing facilities in southwest Tucson.
TEP plans to build a new 138 kilovolt (kV) substation and upgrade existing facilities in the Town of Marana to strengthen electric reliability for customers and meet growing electric demand in the area.
TEP is seeking approval from the City of Tucson to rezone land adjacent to the Vail Substation, located near Interstate 10 and South Rita Road, to accommodate the construction of new 230-kilovolt substation facilities.
TEP plans to build a new 138-kilovolt (kV) substation that will help Davis-Monthan AFB meet Department of Defense-mandated energy resiliency directives, replace aging infrastructure and strengthen electric reliability.