The development of a single RTO covering the U.S. portion of the Western Interconnection could save $2 billion a year in energy costs by 2030, study says.

Although electric utilities will see their tax rate fall from 35% to 21% under the Tax Cut and Jobs Act, few are making plans to spend their savings.

This week's state briefs include news on California, Connecticut, Idaho, Kentucky, Maine, Massachusetts, Maryland, Minnesota, Nebraska, New Jersey and others.

This week's state briefs include news on Arizona, California, Illinois, Massachusetts, Minnesota, Missouri, Nevada, New York and others.

Critics say CAISO is moving too quickly in its effort to get a plan for a Western RTO to California lawmakers before legislative session's end.

CAISO released a revised set of principles for governing a Western RTO in a bid to convince skeptics that an expanded ISO will be amenable to the entire region.

Utah lawmakers plan to draft a bill requiring PacifiCorp to gain legislative approval before joining an RTO based on an expanded CAISO.