1 data center project in Unincorporated Pima County
Who decides here: the Pima County Board of Supervisors decides on zoning for land outside city and town limits.
In Unincorporated Pima County
Local votes and rules
⏸️ Pause on new data centers · Pima County
County supervisors voted 3-2 to pause new data centers in unincorporated Pima County for 120 days, with a possible extension. It covers projects that had not yet applied for permits, so Project Blue and Project Gravel are not affected. The county is writing new zoning rules meanwhile.
⚖️ Court case · Pima County
The No Desert Data Center Coalition sued Pima County in January 2026, saying the public notice for the Project Blue rezoning hid what it was for, which they said broke the open meeting law. A judge threw out the case on April 13, 2026, ruling the county did not break the law.
✅ Approved · Pima County
County supervisors approved the rezoning and the sale of county land for Project Blue, a large data center near the Pima County Fairgrounds.
What you can do
- Get told first.
We'll email you if anything changes in Unincorporated Pima County. - Go to county meetings.
Anyone can speak. Big projects usually need a public hearing. - Ask questions in writing.
Use our checklist.
🔔 Get told first
⚡ Your electric company
Depending on where you live in Unincorporated Pima County: Ajo Improvement Co. (company) or Tohono O'odham Utility Authority (not available) or Usbia-san Carlos Project (public) or Wapa-- Western Area Power Administration (public) or Trico Electric Cooperative Inc. (co-op (owned by its members)) or Tucson Electric Power Co. (company) or Arizona Public Service Co. (company).
Big data centers need a lot of power. Who pays for new power lines depends on state rules. See the rules in Arizona.
🙋 Open tasks here
- Which company will use the data center? (The county signed a secret deal, an NDA.)
- How much electricity will the full campus use when all 10 buildings are built?
- How many diesel backup generators will the site have?
- How will the court rule on the Attorney General's appeal of the power deal?
- How much water will the site use each day for non-cooling uses?