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

Pacific Northwest members reaped an unusually large chunk of the Western EIM's benefits in the first quarter, leaning on it to keep up with demand.

The Western Energy Imbalance Market continued expanding as the Sacramento Municipal Utility District became the first publicly-owned utility to begin participating in CAISO’s real-time electricity market for the West.

CAISO’s RC West Oversight Committee held its monthly meeting as the grid operator prepares to assume the reliability coordinator role for most of the West.

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

The Western Energy Imbalance Market (EIM) Governing Body heard proposals regarding its existing real-time market and an expanded day-ahead market.

The Bonneville Power Administration continued its series of discussions with stakeholders about joining CAISO’s Western Energy Imbalance Market.

NorthWestern Energy said that it will join the Western Energy Imbalance Market in spring 2021, making it the 14th utility to announce plans to sign on.

CAISO said Monday its Western Energy Imbalance Market has produced more than a half-billion dollars in benefits for participants since its founding five years ago, including more than $100 million in benefits in the third quarter of 2018.

The Western Energy Imbalance Market saw financial benefits soar to a record $71.2 million in the second quarter, according to a CAISO report.