AZ HB2657

Adds Article 8 to Title 49, Chapter 1 of Arizona Revised Statutes to address carbon dioxide emissions regulation from electric generating units.

Defines "covered electric generating unit" as existing fossil fuel-fired electric generating units in Arizona subject to federal EPA regulation under Section 111 of the Clean Air Act.

Requires the Department to prepare an economic impact report if it elects to develop a state implementation plan for carbon dioxide emissions, subject to public notice and comment.

Economic impact report must assess effects on electricity affordability and generation diversity, potential plant retirements, investment needs, grid reliability, consumer impacts on low-income households, employment effects, economic development, state competitiveness, government revenues, and required state law changes.