utility; resource plan; commission review

HB 2912 requires Arizona electric utilities to submit detailed integrated resource plans to the Corporation Commission every three years. These plans must project 15-year energy demand (with low/medium/high scenarios), detail existing and planned generation assets, analyze costs and reliability of potential new plants, and use a ratepayer impact test to select the lowest-cost, most reliable option - without prioritizing emissions goals. The Commission must also obtain an independent third-party review of each plan to verify data and evaluate alternatives. The bill includes optional analysis of carbon emissions across all plant lifecycle stages (scopes 1-3), but the core requirement focuses on cost, reliability, and transparency for ratepayer decisions.