Arizona regulators have repealed the renewable energy standard for electric utilities in the state, saying it's time for renewables to "stand on their own two feet."

Two Arizona utilities received approval to convert coal-fired power plants to run on natural gas, projects they say will enhance grid reliability, reduce emissions and preserve jobs.

For the first time in years, California’s grip on Western market design is genuinely at risk, writes Nick Myers of the Arizona Corporation Commission.

As Tucson, Ariz., weighs whether to take over part of Tucson Electric Power's electric system to form a municipal utility, a new study said such a move would cost the city more than $4 billion.

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.

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

An alternative to connecting a large data center load to the electrical grid is a private, fully off-grid energy system, writes Travis Fisher of Cato.

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.

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.