FERC approved the CAISO plan to for a new market mechanism for itself and the Western EIM designed to integration of variable renewable energy resources.

FERC rejected for a second time proposed rules by Arizona Public Service on external resources can use dynamic scheduling to participate in the EIM.

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.

The newly established Western Energy Imbalance Market (EIM) governing body kicked off its first meeting last week by electing its leadership.

Arizona Public Service and Puget Sound Energy have met the milestones to participate in the CAISO-run Western EIM and will begin trading in the market on Oct. 1.

Berkshire Hathaway Energy affiliates NV Energy and PacifiCorp refunded nearly $95K to customers after FERC revoked their market-based rate authority.

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

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.

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