CAISO Expansion in Question as EIM Grows January 3, 2017By Robert MullinCAISO rang in 2016 with a strong push to expand its operation into PacifiCorp’s sprawling six-state service territory, but the project hit a stumbling block by mid-year. Tell us who you are,get 2 free articles each month. What do you want to know?Want a free trial instead? Click here.Already convinced? View pricing and plans.Already a subscriber? Log in here. Additional news on this topic:Seattle City Light Signs EIM Membership AgreementSeattle City Light has signed an agreement with CAISO to begin participating in the Western Energy Imbalance Market in April 2019.Arizona Public Service, Puget Sound Energy Begin Trading in EIMArizona Public Service and Puget Sound Energy began transacting in the Western Energy Imbalance Market on Oct. 1, bringing the region’s only real-time market up to five members.CAISO Board Appoints Western Energy Imbalance Market Governing BodyCAISO’s Board of Governors appointed five members to the newly established governing body of the western Energy Imbalance Market (EIM). Leave a Reply Cancel replyYou must be logged in to post a comment.