AZ SB1237

Establishes the Energy Authority of Arizona as a political subdivision to support development of electric generation facilities and transmission infrastructure, governed by a 17-member board including state officials and representatives from utilities, local governments, and federal agencies.

Creates "energy parks" in unincorporated areas where electric generation facilities of at least 250 megawatts can locate and receive tax incentives, subject to public hearings and local government approval.

Authorizes the authority to issue bonds and obligations, establish fees and charges, and provide financial assistance for transmission facility construction and operation.

Provides tax incentives for qualifying generation facilities in energy parks by classifying personal property as class ten (20 percent of depreciated cost) with a 20-year cap, and real property as class one valued at full cash value.

Establishes a state-level tax on energy park generation facilities at an average rate of primary and secondary property taxes statewide, with revenues directed to the Energy Authority's general fund for infrastructure development and decommissioning nuclear facilities.