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

A parallel effort to create an organized electricity market (RTO) is taking shape in the inland West even as CAISO attempts to expand.

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.

Regulation costs in CAISO have quadrupled since the ISO increased requirements to help balance variable output from renewable resources in February.

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 transmission planning staff  proposed studies on the implications of gas shortages on grid reliability.