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Arizona’s Data Center Pause Debate
Coverage from Arizona Republic, ABC15 Arizona, and others
Arizona Attorney General Kris Mayes is urging Governor Katie Hobbs and state lawmakers to pause approvals and construction of new data centers, particularly large AI facilities.
The proposal follows rising utility demand and costs, shrinking Colorado River supplies, projected water use, and opposition to projects in Ahwatukee, Glendale, and Pinal County. The debate is moving between a statewide moratorium and narrower rules governing facility location, water use, energy demand, emissions, and community input.
If you read one thing
It provides the clearest broad overview of the statewide pause debate, its water and power rationale, community impacts, and policy barriers.
The counter-case
It presents the targeted-restrictions position and explains why a narrower incentive pause may be more politically feasible than a moratorium.
The evidence
It adds concrete evidence about Glendale’s Project Eagle and the power, water, and neighborhood effects driving opposition.
Latest development
It captures the latest major development: Governor Hobbs rejecting a moratorium and sharpening the divide over statewide versus targeted limits.
Statewide pause faces policy friction
Attorney General Kris Mayes is pressing for a statewide pause on new data-center approvals and construction, but legislative approval is expected to be difficult. Arizona’s three-year pause on data-center tax incentives represents a narrower intervention than a broad moratorium, reinforcing the split over how far restrictions should go.
Power and water capacity constrain growth
Data-center expansion is being evaluated against shrinking Colorado River supplies, record electricity demand, utility-cost pressure, and projected cooling needs. A Phoenix-area analysis estimates data-center-related water demand could increase by more than 450% if planned projects are built, making resource planning a central condition for approval.
Local impacts are driving opposition
Opposition is extending from Ahwatukee and other local disputes to Glendale’s proposed Project Eagle, which would include three large facilities and an onsite power plant. Concerns about neighborhood effects, including potential heat increases, are adding pressure for public consultation and tighter project-level review.
330,000 square feet
approximate size of each planned data center
“In Glendale, Project Eagle, formerly known as Project Baccara, is moving through the approval process. The proposed development near the northwest corner of Litchfield Road and Olive Avenue would include three data centers, each approximately 330,000 square feet, and an on-site power plant.”
three data centers
planned data center facilities
“In Glendale, Project Eagle, formerly known as Project Baccara, is moving through the approval process. The proposed development near the northwest corner of Litchfield Road and Olive Avenue would include three data centers, each approximately 330,000 square feet, and an on-site power plant.”
double-digit percentage
requested utility rate increases
“Earlier this year, Mayes opposed double-digit percentage rate increase requests from Arizona Public Service Company and Tucson Electric Power Company in ongoing rate cases.”
nearly 30% percent
reduction in Arizona’s Colorado River water supply
“Mayes said Arizona faces a shrinking water supply and rising energy costs. The Department of Interior has cut the state’s Colorado River water supply by nearly 30%, while a 2025 analysis estimated that data center water demand in the greater Phoenix area could increase by more than 450% if all planned projects are built.”
up to four degrees Fahrenheit
temperature increase in nearby neighborhoods
“She also cited an Arizona State University study finding that data centers can raise temperatures in nearby neighborhoods by up to four degrees Fahrenheit.”
Contested Issue
Should Arizona impose a statewide pause on new data-center approvals and construction, or rely on narrower, targeted restrictions?
The corpus presents a substantive policy disagreement. Kris Mayes argues that Arizona should halt new data-center approvals and construction until the state develops a plan for managing water and power demand. Other reported positions favor narrower measures addressing specific issues such as water use, energy demand, location, emissions, incentives, or community input rather than a blanket moratorium.
Statewide pause
Arizona should pause approval and construction of new data centers, particularly large AI facilities, until statewide water, power, and growth-management plans are established.
Targeted restrictions
Arizona should address data-center impacts through narrower, issue-specific restrictions or incentive changes rather than a blanket statewide moratorium.
Governor rejects statewide data-center moratorium
Governor Katie Hobbs has rejected the proposed statewide moratorium, making the political divide over pausing data-center growth versus imposing narrower limits explicit as water, power, and utility-cost concerns intensify.
Previously
Arizona Attorney General Kris Mayes is urging lawmakers and Governor Katie Hobbs to pause approvals and construction of new hyperscale AI data centers. The proposal reflects concerns about rising electricity costs, record utility demand, shrinking Colorado River supplies, groundwater and cooling needs, and opposition to projects such as Menlo Digital's planned Ahwatukee campus. The issue could affect project timelines, local land-use decisions, and the cost and availability of power and water in the Phoenix area.
The debate has broadened from Mayes’s moratorium proposal into a policy split between a blanket pause and targeted regulation, while Arizona has separately paused data-center tax incentives for three years. New opposition in Glendale and involvement from the Arizona Chamber of Commerce add commercial and geographic dimensions, though projects with existing entitlements may proceed.