Small nuclear reactor VETO in Arizona

Arizona’s Governor vetoed HB 2774 (2025 | AZ) that would have “waived certain state regulations to allow data centers and other large industrial energy users to build small nuclear reactors.” In the veto letter, the Governor explains “Unfortunately, this bill puts the cart before the horse by providing broad exemptions for a technology that has yet to be commercially operationalized anywhere in this nation.” 

Route Fifty | Governor rejects fast-track for small nuclear reactors at Arizona data centers