CAISO last week began work on a plan to extend external resource participation in the western Energy Imbalance Market (EIM).

A federal judge in Southern California declined to dismiss a lawsuit alleging that CAISO unjustly deprived the Imperial Irrigation District  of its full export rights.

Arizona Public Service and Puget Sound Energy have moved a step closer to linking up with CAISO’s Energy Imbalance Market (EIM).

CAISO provided stakeholders an update on its efforts to address Air Resources Board (ARB) concerns that the EIM is not properly accounting for the impact of emissions.

Edison International, and its SoCalEd subsidiary, are maneuvering to capitalize on California’s effort to meet its greenhouse gas emissions goals.

PG&E's 2nd quarter profits fell sharply due to a series of one-time costs; but hopes to grow by providing transmission for clean energy resources.

The western Energy Imbalance Market continued to boost demand for California’s surplus renewable generation last quarter.

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  provided an explanation of its decision to increase regulation requirements in response to the growing variability on its system.

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.