Arizona regulators rejected energy rules that would have required the state’s electric utilities to cut carbon emissions 50% by 2032 and 100% by 2070.

The Arizona Corporation Commission approved a statewide transportation electrification plan developed by utilities and intended to accelerate EV adoption.

A new report estimates the long-term costs of going green for Arizona ratepayers.

Southwest Gas is facing regulatory barriers to increasing its renewable natural gas purchasing despite a goal set by the Nevada legislature.

Managed-charging strategies emerge as incentives intended to encourage EV owners to charge during off-peak hours create late-night surges in power use.

Arizona has joined Colorado, Nevada and Oregon in exploring membership in an RTO in the Western Interconnection.

Arizona regulators approved a demand management plan that includes incentives for homeowners who install battery storage with their rooftop solar system.

During a meeting of the Western Conference of Public Service Commissioners, regulators shared strategies for dealing with heat waves, cold snaps and wildfires.

Arizona Corporation Commission voted to advance energy rules requiring electric utilities to cut carbon emissions 50% by 2032, 100% by 2070.

Environmental groups reacted with dismay after regulators in Arizona rejected energy rules that would have set carbon emissions targets.