Tucson Planning Commission reviews proposed regulations for data centers

The Tucson Planning Commission held a study session to discuss proposed updates to the city's development codes for large-scale data centers. This follows four public meetings and 980 notes from residents emphasizing the need for 'guardrails' reflecting Tucson values. The proposal defines a large-scale data center as over 25,000 square feet using more than 50 megawatts of power. Key requirements include disclosure of energy and water use, noise studies, additional property setbacks, a public review process, and specific guidelines for data center locations and construction. Carver Struve, principal planner for the City of Tucson, noted the increasing compactness and energy demands of modern data centers. Water usage remains a contentious issue, with the proposal prohibiting potable water for cooling in some projects, though total water use regulations are managed under a separate city ordinance. A recent incident involving Ames Construction, a subcontractor for Beale Infrastructure's "Project Blue" near the Pima County Fairgrounds, was cited for using city water for dust control, an action the city disavowed. Residents expressed frustration, calling for the commission to exercise its power in zoning to protect lives, even if it risks litigation, as voiced by residents like Reed and Vivek. The commission also considered the legal complexities of enacting a moratorium on data centers, with officials warning against potential legal jeopardy if done incorrectly. The proposal mandates that all large-scale data centers fall under PAD or PCD zoning, allowing review by the mayor and council. The planning commission voted to advance the proposal to an official public hearing on June 3 for further review before a recommendation is made to the mayor and council for final approval.