Prime PHX01 Avondale Campus
Under construction · 3700–3716 S. Avondale Boulevard, Avondale, Arizona, United States
Google's air-cooled Mesa campus is a three-phase development supported by a new SRP switchyard and a broader Arizona clean-energy portfolio. Google Mesa Data Center Campus is in Mesa / Elliot and Sossaman roads, AZ, US and is a data center campus with construction status. Participants include Google LLC as developer, Stone Applications, LLC as owner, Salt River Project as utility provider, NextEra Energy Resources as utility provider. Development comprises Phase I, Phase II (construction), Phase III (preconstruction). Key milestones include Phase III enters design review. (2025-10-28) and $1B and 750,000-square-foot milestone. (2029-07-01). 230 kv switchyard and transmission — 22 maximum_double_circuit_structures: Project Red Hawk switchyard and transmission route; number is structures, not circuits or MW. clean energy portfolio — 430 MW_minimum_new_to_grid: Arizona portfolio supports hourly matching; not campus demand or dedicated line capacity. Permitting includes certificate of environmental compatibility for Project Red Hawk transmission line and switchyard (approved) and design review for Google Mesa Phase III (under review reported). Incentives include government property lease excise tax (approved development agreement) for City owns/leases project property under a 25-year GPLET structure at 150% of the statutory excise rate described in 2019 minutes.
Projects sharing a market, utility, or organization.
Under construction · 3700–3716 S. Avondale Boulevard, Avondale, Arizona, United States
No additional capacity claims are published.
Approximately 288,530 square feet; operating status held blank pending primary confirmation.
1 building
Approximately 280,000 square feet.
1 building
Approximately 283,500 square feet in October 2025 design review.
1 building
22 maximum double circuit structures
Project Red Hawk switchyard and transmission route; number is structures, not circuits or MW.
430 MW minimum new to grid
Arizona portfolio supports hourly matching; not campus demand or dedicated line capacity.
Air-cooled design superseded the original water-cooled plan; historic water authorization remains legal context.
No map point available
Published claims and their source links.