TEP has invested approximately 1.7 billion dollars into upgrading its infrastructure, including substations, transmission lines, and energy storage systems as of 2026-07-10. TEP is working to achieve net zero carbon emissions by 2050 while keeping energy affordable and reliable. The company is positioning itself as a modern, renewables-focused regional utility in a competitive Southwest energy landscape.
Cyborg Score Rationale
TEP entered into an Engineering, Procurement, and Construction Agreement to develop a standalone Battery Energy Storage System (BESS) facility at a cost of $268 million, which will be located in southeast Tucson and have a nominal capacity rating of 200 megawatts (MW) and storage capacity of 800 MW hours, expected to be placed in service in the first half of 2026. Major renewable and storage deployments demonstrate execution capability, though contract renewal uncertainty and rate pressure present headwinds.
Top Insights
TEP estimates that the Roadrunner Reserve project will reduce fuel and purchased power costs by $25 million from June 2025 through September 2026.
TEP and other Arizona utilities have announced that they will be joining Markets+ starting in 2027.
TEP's contract will expire in April 2026, and the city hired an outside firm to assess the economics and regulatory hurdles of taking over by forming its own power utility as of 2026-07-10.
TEP said in June 2025 that its rate request was not influenced by Project Blue, saying it was for work that had been done since 2021, and the company said the operator of Project Blue would pay more than $1 billion for power over the next decade, which would reduce the amount TEP needed to collect from other customers.
Named Competitors
Arizona Public Service — Largest electric utility in Arizona serving Phoenix area
Salt River Project — Cooperative utility serving Phoenix metro area
Empire Electric Cooperative — Rural electric cooperative in southeastern Arizona
Recent Developments
(August 2024) Signed $268 million EPC agreement for 200 MW Battery Energy Storage System (Roadrunner Reserve 2) facility
(June 2025) Filed rate request citing infrastructure investments since 2021; announced energy supply deal with Project Blue data center operator