Why join the western EIM?
Selling surplus energy and capacity in the western markets is essential to keeping Bonneville’s rates low. BPA must adapt its business model as these markets change. Our analysis shows that joining the Western Energy Imbalance Market is one potential method to achieve this outcome.
Joining the EIM under the right conditions may result in increased value for the flexibility obtained from the federal hydropower system and other Northwest generators. It could also improve congestion management of the transmission grid. There are still many steps and hurdles to clear before any decision is made. BPA is currently determining how and under what conditions it could join the EIM, with a potential implementation date of April 2022.
Benefits accessible through EIM membership:
- Congestion management functions that are more economically efficient than present curtailment and bilateral redispatch capabilities.
- Optimized day-to-day operation of the power system.
- Transmission expansion investment decisions.