Tucson Electric Power has invested more than $1 billion since 2011 to maintain safe, reliable electric service to more than 417,000 customers. These improvements have included:

  • $468 million of upgrades to TEP’s transmission and distribution system, including $216 million to improve several 138-kilovolt (kV) transmission lines and build a new 500-kV transmission line. TEP also invested $252 million for distribution system reinforcement and expansion, public improvement projects, substation construction and maintenance, and the replacement of aging infrastructure.
  • $596 million in generation related investments, including $270 million for maintenance and environmental upgrades to TEP’s power plants and other generating resources. This amount also includes $164 million to purchase a 75 percent share of a highly efficient, natural gas-fired 413-megawatt (MW) power station in Gila Bend. TEP’s 2014 purchase of the plant advanced its plan to reduce coal-fired generating resources by nearly a third in five years.
  • $103 million to expand TEP’s cost-effective large-scale solar energy resources.


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