The live tracker for Arizona's AI economy
Arizona AI

Arizona data centers

This page tracks every Arizona data center Arizona AI can verify from published sources: what is operating today, what has only been announced, and which operator is behind each site.

Built and operating today

2.1 GW of capacity is operating, added up from the 52 of 56 built facilities that publish a power figure, covering 11.0M sq ft of floor area. Where the figures come from: 21 from operators, 2 from official records, 6 from the press and 23 estimates from a listing site. What they measure: 750 MW computing (IT) load and 1.4 GW not stated by the source. Of the 56 built facilities, 42 publish a floor area.

Announced but not yet built

A further 20.0 GW is announced, added up from the 40 of 62 proposed projects that publish a power figure. Where the figures come from: 8 from operators, 4 from official records, 12 from the press and 16 estimates from a listing site. What they measure: 1.7 GW computing (IT) load, 543 MW power utilities have agreed to supply, 8.5 GW expected electricity demand and 9.2 GW not stated by the source. Planned floor area is 50.6M sq ft, counted from the 30 of 62 projects with a floor area on record. None of it is running. Announced figures are estimates based on what developers and operators have stated in their plans, filings and announcements. Many describe a full build-out years away, and all are subject to change.

Why these numbers differ from the 143 records we track

Arizona AI tracks 143 published records. Each project is counted only once, so not every record adds to the cards above:

  • 118 count toward the numbers above.
  • 15 are single buildings or phases of a campus that is already counted as a whole.
  • 4 are campus summaries whose buildings are counted one by one instead.
  • 2 are projects no longer proceeding, listed further down the page.
  • 4 have no recent public information, listed further down the page.

Built and announced projects are kept in separate groups and never added together, because an announced project is not power Arizona has yet.

Why data centers are an AI story

The four steps from a chip to an AI answer, and which of them happen in Arizona.

Artificial intelligence is usually described as though it were weightless. It is not. It is a physical industry with four links in its chain, and Arizona holds two of them.

  1. Chips (Made in Arizona): Silicon is fabricated and packaged. AI runs on specialized processors, and they are among the hardest objects humans manufacture. Arizona makes them: TSMC north of Phoenix and Intel in Chandler are two of the largest semiconductor investments in the country. A finished chip is useless on its own, though. It is a component, and it has to go somewhere. Arizona semiconductor companies
  2. Data centers (The subject of this page): Power, cooling and fiber at scale. A data center is a building full of computers that run continuously on behalf of other people and companies. AI leans on them heavily: models are trained in buildings like these, and much of what people ask AI services is answered in them too, rather than on the phone or laptop in front of them. What makes them hard to site is electricity, cooling and fiber at the scale that work demands.
  3. Training (Mostly elsewhere): Building the model, over weeks. Training a model means running tens of thousands of those chips in concert, continuously, for weeks. It is the most power-hungry thing anyone does with a computer, and it is where the very largest facilities earn their electricity bills. Most of it happens outside Arizona today, in places where power is cheaper still. None of that power is generated on site: a data center consumes electricity rather than producing any.
  4. Answering you (Everywhere, all day): The finished model does its job. Every question anyone asks an AI is answered by a machine in a building like these. Individually it is far smaller work than training, but it never stops, and unlike training it wants to sit physically close to the people asking, because distance is delay. This is the stage where Arizona’s position could change. It has not yet.

The reported capacity figures for the 56 operating facilities we track total about 2.1 GW. This is a capacity estimate, not a measurement of electricity use. Facilities with no reported power figure are excluded from the total. Power, cooling and land use are why a site about Arizona and AI has to count data centers carefully rather than cheer for them. Read about our methodology.

The largest and the newest

Running facilities and announced projects, ranked separately.

Built and operating today

Largest operating facility

Running now, by megawatts

  1. QTS Phoenix 2 (PHX2) Campus: 210 MW for the whole campus
  2. CyrusOne Chandler Campus (PHX1-PHX8): 169 MW for the whole campus
  3. Aligned Phoenix PHX-07: 92 MW
  4. Google Mesa Building 1: 80 MW
  5. Vantage Data Centers Phoenix AZ14: 64 MW

Largest operating floor area

Running now, where square footage is reported

  1. Apple Mesa Global Data Command Center: 1.3M sq ft
  2. Iron Mountain AZP-1: 588,669 sq ft
  3. Aligned Phoenix PHX-01/02/03: 550,000 sq ft
  4. Iron Mountain AZP-2: 530,000 sq ft
  5. Digital Realty PHX15: 508,000 sq ft

Most recently online

Running now, by year completed

  1. Edged Phoenix: 2026
  2. Microsoft PHX-72: 2026
  3. Aligned Phoenix PHX-06 Phase 1: 2025
  4. Aligned Phoenix PHX-07: 2025
  5. Google Mesa Building 1: 2025

Announced but not yet built

Largest proposed project

Announced, by megawatts. None of this is running.

  1. SpaceX Data Center Campus (Cochise County): 6.0 GW expected demand at full build-out
  2. Hassayampa Ranch Data Center: 3.5 GW at full build-out
  3. Tract Buckeye: 1.8 GW at full build-out
  4. Luckett Road Data Center Campus (Marana): 1.5 GW expected demand at full build-out
  5. Entrata Data Center (Mohave County): 1.3 GW at full build-out

Largest proposed floor area

Announced, where square footage is reported

  1. Tract Buckeye: 20.0M sq ft
  2. SpaceX Data Center Campus (Cochise County): 4.4M sq ft
  3. QTS Phoenix 4 Campus: 3.2M sq ft
  4. QTS Phoenix 3 Campus: 3.0M sq ft
  5. NTT Mesa PH10 (Pacific Proving site): 2.3M sq ft

Largest proposed site

Announced, by land assembled

  1. Tract Buckeye: 2,069 acres
  2. Hassayampa Ranch Data Center: 1,687 acres
  3. Grande Valley Data Center Campus: 954 acres
  4. Florence Tech Park at Dobson Farms: 780 acres
  5. Entrata Data Center (Mohave County): 776 acres

Who holds the most, company by company

The lists above rank single facilities. This adds up every facility one company holds in Arizona, which is how an operator with several medium sites can outrank one with a single large site. Ordered by capacity that is operating today. Announced capacity is shown alongside it and is never added to it. Companies that have announced a project but run nothing in Arizona yet sort below the ones that do.

OperatorOperating sitesOperating capacityProposed sitesAnnounced capacity
Microsoft10570 MW6333 MW
Aligned5285 MW6343 MW
QTS1210 MW2750 MW
CyrusOne1169 MW1198 MW
NTT3137 MW436 MW
Iron Mountain4131 MW--
Vantage Data Centers4128 MW148 MW
Meta296 MW3144 MW
Google180 MW2276 MW
Digital Realty266 MW--
Apple150 MW--
Stream Data Centers240 MW1-
Edged136 MW--
EdgeCore126 MW3-
H5 Data Centers126 MW--
PayPal116 MW--
TECfusions116 MW--
Radius Data Centers111 MW--
GoDaddy111 MW--
Centersquare18 MW--
Flexential15.02 MW--
EdgeConneX14.50 MW1115 MW
Expedient13.60 MW--
DCX13 MW--
ColoBarn12 MW--
Comarch12 MW--
Ark Data Centers11 MW--
Cloudnium10.63 MW--
US Signal10.50 MW--
11:11 Systems1---
American Express1-1-
Login1---
Stack Infrastructure--2475 MW
Amazon Web Services--4385 MW
Compass Datacenters--2320 MW
Novva--1300 MW
Menlo Digital--1257 MW
Prime Data Centers--1240 MW
5C Data Centers--120 MW
PhoenixNAP--118 MW
US Government--1-

A dash means nothing is publicly established, not zero.

Every tracked facility

No longer proceeding

These projects were announced and then stopped. They are not counted in either total above.

Previously reported, no recent information

These projects were announced or reported at some point, but we found no recent public information about them. Some may have been abandoned or put on hold. They are not counted in either total above, and each page says when the latest information is from.

Did you know?

Why you'll see other numbers

Published counts of data centers in Arizona on various other websites run from about 100 to more than 180. Many are online directories that list every site they know of, built or not. Arizona AI counts 56 facilities confirmed running today and 62 proposed projects, and counts a campus once when its operator publishes one figure for it.

  • 164 (Phoenix Business Journal, December 2025): Taken from the Data Center Map directory at the end of 2025. Numbers like this are often quoted again later without being updated or checked for what they count: in late October 2026 the same directory listed 172.
  • 162 (UNLV Lincy Institute and Brookings Mountain West, March 2026): The number the same directory showed for Arizona on March 6, 2026. The fact sheet does not say how many of these are running.
  • 98 operating, 86 planned (Pew Research Center, April 2026): The same directory split by status, as of February 19, 2026. Planned includes sites under construction and land held for future use.
  • 113 operating (Cronkite News, September 2026): From a different directory, U.S. Data Center Map, counting the sites it lists as running.
  • 182 in all (Cronkite News, October 2026): A directory total that Cronkite News credits to U.S. Data Centers. Cronkite News says 16 of the sites are under construction and 53 are planned.

These figures count different things, so they do not line up with each other or with ours. Every Arizona AI facility page lists the sources for what it says.

How this list is built

Records come from operator announcements, county and municipal filings, utility and regulatory filings, trade press and public project trackers. Records are checked at regular intervals and figures may update as our sources change. Arizona AI is independent and is not affiliated with any operator or with the State of Arizona.

Proposed projects are shown because they are the clearest signal of where Arizona is heading, but an announcement is not a building. They are labeled, kept out of operating totals, and reviewed periodically. A project that is publicly stopped, for example by a county denial, stays listed under “No longer proceeding” with the date and reason, and is taken out of every total. A project we found no recent public information about stays listed too, with the date of the latest information, under “Previously reported, no recent information” and is likewise taken out of every total.

Some operators publish a campus figure and a per-building figure for the same site. Where that happens the capacity is counted once, at one level only, so the totals on this page are lower than the sum of every record shown. Where only per-building figures exist, each building is counted and the campus page is an overview. 19 of 143 published records are excluded from the totals for this reason.

Blank fields mean the figure is not publicly established, not that it is zero. On-site headcount is not shown at all: construction-job announcements are not permanent employment, and no reliable per-facility employment figures exist for these sites. Tenant lists are not shown for the same reason.

Capacity figures come from the operator wherever the operator publishes one. Where it does not, the figure comes from the best other public source, often a data center listing site, and each facility page says which. Listing-site figures often run 20 to 40 percent above what operators state for the same buildings where both exist, and the listing does not say what its numbers measure. The totals above therefore combine figures from operators, official records, the press and listing-site estimates, and some figures measure a utility's supply agreement or expected electricity demand rather than computing load. The note under each total says how many figures come from each kind of source and how much of the total each measure accounts for.

Know a facility that belongs here, or one of these records is wrong? Tell us