The Western Energy Imbalance Market chalked up another future member after Tucson Electric Power signed an agreement saying it will join in April 2022.

FERC approved an agreement between CAISO and the Salt River Project that establishes the rules governing the utility’s participation in the Western EIM.

Salt River Project signed an agreement with CAISO that puts the utility on track to join with the Western Energy Imbalance Market (EIM) in April 2020.