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Senate passes reporting bill for large new electric customers after debate over data-center impacts

Arizona Senate · April 16, 2026

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Summary

After floor amendments, the Senate passed House Bill 27-56 requiring utilities to report on large new customers; senators debating the bill clashed over whether it goes far enough to address data-center impacts on rates, generation, water use and local communities.

The Arizona Senate passed House Bill 27-56 after adopting floor amendments that alter reporting and planning language for utilities and large electric customers. The measure requires certain reports or notifications about extra-high-load customers and contains exemptions for smaller utilities.

Senator Shope moved the Shope floor amendment and spoke to several technical changes. On the floor, Senator Epstein said the bill ‘‘is a tiny step forward’’ but repeatedly objected that it does not require data centers to pay for increased generation nor address the water, noise, and energy-burden impacts some communities have reported. "This bill is a tiny step forward... But this bill does not do anything to stop that," Epstein said, criticizing exemptions for utilities with 40,000 customers or fewer and warning that data centers could exploit that loophole to locate in smaller communities.

Proponents said negotiated amendments improved the bill and urged future legislation to address remaining gaps. Senator QB (as recorded in the transcript) said the amendment ‘‘greatly improve[d] the bill’’ but added caution that the statute is primarily a reporting requirement and that additional policy work and regulatory attention will be necessary.

A recorded vote was taken after floor debate and amendments; the transcript records the clerk announcing the passage of HB 27-56. Several senators explained their votes on the floor, with critics urging broader action on incentives and infrastructure cost-allocation.

Why it matters: The measure creates reporting and planning transparency for utilities and large customers, a first-step policy that critics say will not prevent upstream costs from being shifted to ratepayers without further legislative or regulatory action.

What’s next: The bill passed the Senate and will be transmitted to the House; sponsors and critics signaled further legislation or regulatory requests to the Arizona Corporation Commission may follow.