Data centers in Arizona
66 tracked, 16 planned or under construction, 3444 MW in the pipeline. Planning filings are researched county by county here; see how coverage works.
Counties
Biggest projects
Any status, ranked by the megawatts on the filing.
Recent filings and updates
Stopped
Withdrawn, denied or on hold. Full list, every state, at stopped projects.
Your power bill
Data centers change bills through the utility's own rate cases and large load tariffs, not a separate charge you would see by name. Pending electric rate cases in Arizona, in dollars a month, is our sister site's full tracker for this state.
TEP's general rate case evidentiary hearing was held April 22 through May 12, 2026, with closing arguments due in July 2026. TEP requested new rates take effect September 1, 2026, but no confirmed final Commission decision date has been found in current reporting.
APS's general rate case evidentiary hearing ran from May 18 through July 7, 2026, one of the longest in Arizona Corporation Commission history, with about 36 intervenors, more than 50 witnesses and over 300 exhibits. An administrative law judge is expected to issue a recommended opinion and order by late November 2026, after which the full Commission must vote by December 31, 2026; key contested issues include a proposed Extra High Load Factor rate for large industrial and data center customers and a Formula Rate Adjustment Mechanism.
The Arizona Corporation Commission approved TEP's contract to serve the 286 MW Project Blue data center near Tucson on a 4 to 1 vote in December 2025, over two hours of public opposition centered on water use. TEP says the data center pays the standard largest-customer rate with minimum bills and termination fees so the buildout cost stays off residential bills.
SRP's elected board approved a 3.5 percent average residential increase, about 5.61 dollars a month for a typical home, effective with November 2025 bills, along with a higher fixed monthly service charge.