A measure to expand CAISO into an RTO for Western states failed to clear the legislature for the third time in three years.

The California State Senate’s Appropriations Committee sent a bill that would transform CAISO into an RTO back down to the Rules Committee.

Talk of a Western RTO continued at the 11th annual gathering of the Western Power Issues Roundtable, after several shakeups in the Western Interconnection.

The CAISO regionalization bill that would transform CAISO into an RTO passed another key California State Senate committee.

A California Senate committee advanced a bill that would allow CAISO to be transformed into a Western RTO, a change that has been met with heavy opposition.

Western utility leaders at the CAISO annual stakeholder event said they welcome the operational benefits and increased regional cooperation of the EIM but remain wary of organizing the wider West under a CAISO-run RTO.

Gov. Jerry Brown reaffirmed his commitment to an expanded CAISO, a month after calling for a delay in efforts to complete enabling legislation.

CAISO launched an initiative to develop a greenhouse gas accounting system suitable for an expanded ISO.

CAISO is refining a proposal for cost allocation of new transmission facilities in an expanded balancing authority that would include areas of the West outside California.

CAISO's effort to expand into a Western RTO will be postponed this year after California Gov. Jerry Brown postponed a formal proposal.