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

A study suggests CAISO’s expansion into a multistate RTO could save Western ratepayers billions while helping meet emission-reduction goals.

FERC rejected the CAISO proposal to prohibit EIM participants from implementing economic bidding at the market’s external interties.

The CAISO Board of Governors appointed five members to the newly established governing body of the western Energy Imbalance Market (EIM).

CAISO stepped up efforts to convert skeptics of a Western RTO, convening a forum in Denver to discuss a proposed set of governing principles.

PG&E (NYSE:PCG) will shut down Diablo Canyon, CA’s last nuclear power plant under an agreement with environmental, labor and anti-nuclear coalition.

CAISO proposed a study to identify the natural gas-fired units most vulnerable to retirement in its balancing area.

CAISO's Department of Market Monitoring reported that solar power surpassed wind in 2015, becoming the largest source of renewable generation.

FERC  revoked authorization for Berkshire Hathaway Energy subsidiaries to sell wholesale power at market-based rates in four  balancing authority areas.

New generation and a rebound in hydroelectric capacity means healthy operating reserve margins for California this summer.