Arizona regulators have repealed the renewable energy standard for electric utilities in the state, saying it's time for renewables to "stand on their own two feet."

Arizona Public Service would save $110 million/year by joining CAISO's Extended Day-Ahead Market rather than SPP's Markets+, a new analysis found.

CAISO’s Western Energy Imbalance Market surpassed $8 billion in cumulative economic benefits since its 2014 launch after providing participants with $415.65 million in gross benefits in the fourth quarter of 2025, according to an ISO report.

NARUC’s Winter Policy Summit focused on the main issue facing the power industry — how to reliably and affordably interconnect new large load customers.

The U.S. Department of Energy has canceled a pending $1.8 billion loan guarantee to Arizona Public Service that was intended to help finance transmission, renewable energy and storage projects.

A commitment to “growth pays for growth” and properly structuring tariffs and energy supply agreements can ensure data centers pay all their costs, writes Nick Myers of the Arizona Corporation Commission.

SPP Markets+ stakeholders unanimously approved the first version of the day-ahead market's protocols, providing a framework for market design, operations and settlements as its future participants build the systems and processes.

The Arizona Corporation Commission approved a demand-side management plan for Arizona Public Service that slashed the plan's proposed budget by more than half and eliminated many of its programs.