Energy Imbalance Market

As of May 3, 2022, BPA is participating in the Western Energy Imbalance Market (EIM), operated by the California Independent System Operator. BPA’s participation in the market will both reduce BPA's costs through greater efficiencies and increase revenues by providing a new way to market surplus power, maximize the capability of the existing federal transmission system, and enhance grid management tools that optimize congestion relief. 

 It is important to note that the Western EIM is not a regional transmission operator. BPA preserves its autonomy and retains authority over transmission planning, day-ahead marketing, and transmission system and balancing authority operations.

EIM Workshops

Decision Documents