County supervisors voted 4-1 to give Project Baccara a special permit needed near Luke Air Force Base. The 160-acre site off Olive Avenue and Litchfield Road would hold two data centers and a gas power plant, about 400 feet from a dozen homes. It still needs an air permit.

May 6, 2026Source

📜 Data center rules · Maricopa County

County supervisors updated zoning for data centers on unincorporated land. They are allowed only in the IND-2 and IND-3 industrial zones; other land must be rezoned first.

Dec 10, 2025Source

🗺️ Zoning change · Maricopa County

County supervisors unanimously rezoned about 2,000 acres west of the White Tank Mountains for industrial use. This clears the way for Hassayampa Ranch, a planned data center campus over 1 gigawatt led by Arizona Land Consulting.

Dec 10, 2025Source

Built & runningBeing builtApproved, not built yetProposedStopped or cancelled

What you can do

Get told first.
We'll email you if anything changes in El Mirage City.
Go to council meetings.
Anyone can speak. Big projects usually need a public hearing.
Ask questions in writing.
Use our checklist.

📣 Report something here

🔔 Get told first

⚡ Your electric company

Depending on where you live in El Mirage City: Tohono O'odham Utility Authority (not available) or Gila River Indian Utility Authority (gricua) (co-op (owned by its members)) or Electrical Dist No8 Maricopa (public) or Ocotillo Water Conserv. Dist. (not available) or Maricopa County M W C Dist #1 (not available) or Harquahala Valley Pwr District (not available) or Usbia-san Carlos Project (public) or Tonopah Irrigation District (not available) or Buckeye Water C&d District (not available) or Arizona Public Service Co. (company) or Wapa-- Western Area Power Administration (public) or City of Mesa (run by the town).

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

Is the first Compass building in El Mirage under construction or running?
How will it be cooled and how much water will it use?
Which company will use it?
How many buildings are running and how many are being built?
How much power and water does the campus use?
How many diesel backup generators are on site?

How to help →

2 data center projects in El Mirage City

In El Mirage City

Compass Datacenters PHX II campus, El Mirage

Microsoft data center campus at Dysart Road and Northern Parkway, El Mirage

Nearby (within 15 miles)

Project Eagle (formerly Project Baccara) data center campus and gas power plant near Luke Air Force Base

QTS Phoenix 3 data center campus on Camelback Road

QTS data center campus at Hermosa Ranch, Avondale

Prime Data Centers Phoenix campus (PHX01) in Avondale

Aligned Data Centers office park conversion in Deer Valley, Phoenix

Project Range data center campus near Yuma Road (withdrawn)

Local votes and rules