Prime Data Centers
DeveloperPublicly Confirmed Scope: Development of the PHX01 campus.
Confidence: High · Source: Prime Data CentersPrime Data Centers / PHX01
Prime Data Centers PHX01 — Avondale, Arizona
Avondale, Arizona
Construction / Active DevelopmentACTIVE CONSTRUCTION / EXPANSION WATCH
Last reviewed by MyDataCenterScoutSeptember 14, 2026Project information can change. Independently verify current status before making business decisions.
DeveloperPrime Data Centers
LocationAvondale, Arizona
CampusPHX01
Buildings5 hyperscale data centers
Site66.5 acres
Total planned critical power240 MW
Contractor opportunity signal
ACTIVE CONSTRUCTION / EXPANSION WATCH
Prime broke ground on the first three PHX01 buildings in May 2026. Prime currently identifies PHX01-01, PHX01-02, and PHX01-03 as construction-stage and leased facilities, representing 144 MW of critical IT capacity. Buildings 4 and 5 remain part of the five-building campus, but their current status and availability should be verified from Prime’s project page rather than assumed. ARCO/Murray has publicly disclosed construction participation and scope for the first phase.
Why monitor it
Why Contractors Should Watch This Project
- The five-building campus is planned for 240 MW.
- The campus covers approximately 1.3 million square feet across 66.5 acres.
- Buildings 1–3 are in construction and represent 144 MW.
- Prime identifies a dedicated on-site substation, with Phase 1 commissioned.
- ARCO/Murray has disclosed meaningful site, underground, substation, and core-and-shell scope.
- Remaining phases and downstream contractor relationships are not fully public.
Verified project facts
What is publicly supported
- Developer
- Prime Data Centers
- Location
- Avondale, Arizona
- Campus
- PHX01
- Buildings
- 5 hyperscale data centers
- Site
- 66.5 acres
- Total planned critical power
- 240 MW
- Total planned size
- Approximately 1.3 million sq. ft.
- Data halls
- 20
- Reported investment
- More than $3 billion according to Prime
- Groundbreaking
- May 21, 2026
- First phase
- Buildings 1–3 / 144 MW
- Capacity per building
- 48 MW
- Size per building
- Approximately 267,000 sq. ft.
- Utility provider
- SRP
- Substation
- On-site / 250 MW
- Substation Phase 1
- Commissioned
- Cooling
- Closed-loop air and liquid cooling
Building-by-building status
Campus phases
PHX01-01Construction48 MW · 267,000 sq. ft. · Leased
PHX01-02Construction48 MW · 267,000 sq. ft. · Leased
PHX01-03Construction48 MW · 267,000 sq. ft. · Leased
PHX01-04Not publicly confirmed in the sources reviewed48 MW · 267,000 sq. ft.
PHX01-05Not publicly confirmed in the sources reviewed48 MW · 267,000 sq. ft.
Contractor Relationship Map
Who is publicly connected — and what remains unknown.
ARCO/Murray
Primary Construction PartnerPublicly Confirmed Scope: Major site development, underground coordination, private-substation coordination, and core-and-shell construction for Buildings 1–3.
Confidence: High · Source: ARCO/MurraySRP
UtilityPublicly Confirmed Scope: Utility provider for the PHX01 campus.
Confidence: High · Source: Prime Data CentersUnknown major scopes
Major Scopes Not Yet Publicly Confirmed
Electrical SubcontractorNot publicly confirmedMechanical SubcontractorNot publicly confirmedFire ProtectionNot publicly confirmedControlsNot publicly confirmedLow VoltageNot publicly confirmedSecurityNot publicly confirmedCommissioningNot publicly confirmed
Why This Matters to Contractors
The developer is only the first layer. For subcontractors, the opportunity often depends on identifying who controls construction, who holds major trade packages, which scopes remain unresolved, and which future phases may create another procurement cycle. MyDataCenterScout separates known relationships from assumptions so contractors know where further research is still required.
Procurement intelligence
Known and unknown
- Developer
- Prime Data Centers
- Primary construction partner
- ARCO/Murray
- ARCO public scope
- Site development, underground coordination, private-substation coordination, core and shell for Buildings 1–3
- Utility
- SRP
- Hyperscaler / tenant for Buildings 1–3
- Leading hyperscaler — identity not publicly disclosed in approved sources
- Electrical contractor
- Not publicly confirmed in the sources reviewed
- Mechanical contractor
- Not publicly confirmed in the sources reviewed
- Civil subcontractor
- Not publicly confirmed in the sources reviewed
- Fire protection
- Not publicly confirmed in the sources reviewed
- Controls
- Not publicly confirmed in the sources reviewed
- Low voltage / security
- Not publicly confirmed in the sources reviewed
- Commissioning
- Not publicly confirmed in the sources reviewed
- Formal bid date
- Not publicly confirmed in the sources reviewed
- Procurement contact
- Not publicly confirmed in the sources reviewed
Trades to watch
Relevant scopes
What contractors should watch next
Next public signals
- Progress on Buildings 1–3
- Current status of PHX01-04
- Current status of PHX01-05
- Additional ARCO/Murray subcontractor relationships
- Electrical contractor identification
- Mechanical contractor identification
- Fire protection awards
- Controls contractor identification
- Low-voltage/security relationships
- Commissioning relationships
- Equipment/vendor awards
- Buildings 4 and 5 construction milestones
- Additional permits
- Vendor-prequalification activity
- Public identification of the hyperscaler
Contractor takeaway
What this means
PHX01 is an active construction project with a publicly visible construction ecosystem. Prime has broken ground on the first three buildings, and ARCO/Murray has disclosed substantial site-development, underground, substation-coordination, and core-and-shell scope. The next intelligence questions are which subcontractors are under ARCO/Murray, which packages remain addressable, when Buildings 4 and 5 move forward, and which specialty or downstream scopes become visible.
Source-backed context
Confirmed relationship
ARCO/Murray — Primary construction partner / publicly disclosed construction participant
- Major site development
- Underground coordination across multiple disciplines
- Private substation coordination
- Core-and-shell construction for Buildings 1–3
Sources
Read the source trail
- Prime Data Centers Breaks Ground on Three Buildings at its 240MW Campus in Phoenix, Advancing $3B Investment in AvondalePrime Data Centers · May 21, 2026
- Phoenix Campus PHX01Prime Data Centers
- ARCO and Prime Data Centers Celebrate Data Center Campus Groundbreaking in Avondale, AZARCO/Murray
- Prime Data Centers breaks ground on three out of five buildings at its 240MW campus in Phoenix, ArizonaData Center Dynamics · May 22, 2026
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