Western Energy Imbalance Market (WEIM)
The ISO’s Western Energy Imbalance Market is a real-time energy market, the first of its kind in the western United States.
The WEIM’s advanced market system automatically finds low-cost energy to serve real-time consumer demand across the west. Since its launch in 2014, the WEIM has enhanced grid reliability and generated cost savings for its participants. Besides its economic advantages, the WEIM improves the integration of renewable energy, which leads to a cleaner, greener grid.
Participants
Avista – entered 2022
Powerex – entered 2018
Implementation documents
