Maricopa County, AZ

Tonopah Data Center Campus (491st Ave and Thomas Rd)

Operator not disclosed. Approved.

Maricopa County's Board of Supervisors approved rezoning for 638 acres near 491st Avenue and Thomas Road outside Tonopah in February 2026, clearing the way for up to nine data center buildings totaling 2.25 million square feet along with on-site solar power generation and battery energy storage.

Status

Approved

Operator

Not disclosed

Location

Near 491st Avenue and Thomas Road, Tonopah, AZ, Maricopa County, AZ (approximate, city center)

Size

MW not reported, 638 acres, 2,250,000 sq ft

Cooling

Not reported

Utility

Arizona Public Service

First reported

2026-02

Last updated

August 19, 2026

What happens next

Still to come: permits and construction. Builders do not always announce a construction start date in advance.

Sources

• Maricopa County Board Approves Rezoning for 638-Acre Data Center/Solar Site, AZBEX, 2026-02-18
• 2.25 million sq ft data center campus proposed outside Phoenix, Arizona, Data Center Dynamics, 2026-02

What it would mean nearby

Arizona Public Service is asking the commission for a 16.4% residential increase (2025 general rate case (docket E-01345A-25-0105)). On a $160 monthly bill that is about $22 to $30 a month.

For how far this is from your own address, check it here. For a noise, water, and power bill estimate for one address, see the address report.

Other tracked projects within 25 miles

Common questions

Where is the Tonopah data center?

It is in Tonopah, Maricopa County, AZ.

Has the Tonopah data center been approved?

Yes, it has been approved.

How big is the Tonopah data center?

Reported size: 638 acres, 2,250,000 square feet.

Is it near you?

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