The Energy Imbalance Market (EIM) expanded its footprint and ambitions in 2017 while new suitors lined up to compete with CAISO as the vehicle for a Western RTO.

Legislature ended its 2017 session, drawing criticism for its pursuit of CAISO regionalization and for letting a 100% clean energy bill die in committee.

California legislation that would regionalize CAISO and mandate 100% zero-carbon retail electricity sales statewide by 2045 will not pass this year.