Prime PHX01 Avondale Campus

3700–3716 S. Avondale Boulevard, Avondale, Arizona, United StatesUnder construction

Planned critical IT: 240 MW
Updated: Oct 28, 2026
Utility: Salt River Project

Prime has begun the first three facilities at its five-building PHX01 campus in Avondale. The campus is designed for 240 MW of critical IT capacity, but no operating IT load is yet evidenced.

Capacity

Full campus critical IT capacity

Forecast

240 MW

Source

Per building critical IT design

Design

48 MW

Opening construction phase — PHX01-01 to PHX01-03 · Phase

Phase scope; not a whole-site figure

Source

Opening phase critical IT design

Design

144 MW

Opening construction phase — PHX01-01 to PHX01-03 · Phase

Phase scope; not a whole-site figure

Source

Operating IT capacity: Not established in published records

A missing figure does not mean zero. Planned, utility and generation figures are not operating IT capacity.

Development

Opening construction phase — PHX01-01 to PHX01-03Under construction

3 buildings

Three 48 MW buildings; dated groundbreaking and leased status.

PHX01-04Under construction

1 building

Undated cutoff-current operator status conflicts with the dated release's three-building start boundary.

PHX01-05Announced or preconstruction

1 building

48 MW future design; available.

Milestones (4)

Original 210 MW PHX01 concept announced

May 4, 2023 · Recorded actual event

Completed · Announced

Source not linked

Original first-building completion target

Q3 2025 · Event timing type not established

Cancelled · Forecast completion

Source not linked

PHX01-01 to PHX01-03 groundbreaking

May 21, 2026 · Recorded actual event

Completed · Construction started

Source not linked

Phase 1 of 250 MW on-site substation reported commissioned

2026 · Recorded actual event

Completed · Commercial operation

Source not linked

Participants

Prime Data Centers

Operator

Sources by role

Operator (1)

Prime Data Centers Breaks Ground on Three Buildings at its 240MW Campus in Phoenix, Advancing $3B Investment in Avondale · May 21, 2026 · Primary

Operator (1)

Phoenix Campus PHX01 · Corroborating

Undisclosed leading hyperscaler

Customer

Sources by role

Customer (1)

Prime Data Centers breaks ground on three out of five buildings at its 240MW campus in Phoenix, Arizona · May 22, 2026 · Corroborating

Customer (1)

Prime Data Centers Breaks Ground on Three Buildings at its 240MW Campus in Phoenix, Advancing $3B Investment in Avondale · May 21, 2026 · Primary

Other participants (3)

ARCO/Murray

Contractor

Sources by role

Contractor (1)

Prime Data Centers Breaks Ground on Three Buildings at its 240MW Campus in Phoenix, Advancing $3B Investment in Avondale · May 21, 2026 · Primary

City of Avondale

Government authority

Sources by role

Government authority (1)

Prime Data Centers Breaks Ground on Three Buildings at its 240MW Campus in Phoenix, Advancing $3B Investment in Avondale · May 21, 2026 · Primary

Government authority (1)

$3 Billion Avondale Data Center Breaks Ground · May 21, 2026 · Corroborating

Salt River Project

Utility provider

Sources by role

Utility provider (1)

Phoenix Campus PHX01 · Primary

Capital & incentives

Capital claims and financing records may overlap. Their amounts are not added together.

Capital claims

Announced investment

Transaction scope

$>3000000000

Source

Financing records

Investment commitment

$3bn

May 21, 2026

More-than amount for Prime's campus investment; no debt/equity close or customer spend allocation recorded.

Parties & sources

Prime Data Centers (Sponsor)

Sources (2)

Prime Data Centers Breaks Ground on Three Buildings at its 240MW Campus in Phoenix, Advancing $3B Investment in Avondale · May 21, 2026
$3 Billion Avondale Data Center Breaks Ground · May 21, 2026

Site & development

Site area

Actual

66.5 acres

Source

Planned floor area

Forecast

1,300,000 sq. ft.

Source

Planned data center buildings

Forecast

5 count

Source

Building count

Actual

3 count

Opening construction phase — PHX01-01 to PHX01-03 · Phase

Source

Additional project facts

Project status

Actual

Under construction

Source

Planned data halls

Forecast

20 count

Source

Groundbreaking date

Actual

2026-05-21

Opening construction phase — PHX01-01 to PHX01-03 · Phase

Source

Customer status

Transaction scope

Secured by one undisclosed leading hyperscaler

Opening construction phase — PHX01-01 to PHX01-03 · Phase

Source

Current operator status

Actual

Construction

PHX01-04 · Phase

Conflicting public evidence

Source

Current operator status

Actual

Development

PHX01-05 · Phase

Conflicting public evidence

Source

Infrastructure & permits

Technical details (4)

Utility service

Reported context

utility connection; current operator identification.

Electric grid

Partially operational

250 MW substation

onsite substation — 250 MW_substation; Phase 1 commissioned; full capability design.

Electric grid

Under construction

144 MW IT design

critical it delivery scope — 144 MW_IT_design; under construction.

Closed loop cooling

Planned or represented

closed loop cooling; design.

Public-source research. Plans may change. See Evidence for sources and qualifications.

Related projects (2)

Google Mesa Data Center Campus

Under construction · Mesa / Elliot and Sossaman roads, Arizona, United States

Shared participant: Salt River Project · Same market: Arizona, United States

Compare in a collection

Prime Phoenix Campus PHX01

Under construction · Avondale, Arizona, United States

Shared participant: Prime Data Centers · Same market: Arizona, United States

Compare in a collection