Energy Imbalance Market
PacifiCorp and the California Independent System Operator launched the Energy Imbalance Market in November 2014. The EIM uses a sophisticated system to automatically balance demand every five minutes with the lowest cost energy available across the initial six-state combined grid.
The EIM leverages the growing diversity of renewable resources, flexible backup resources and demand using advanced technology to keep energy supply affordable and reliable. The new market is attracting additional participants and has the benefit of increasing benefits for all customers as diversity increases.
NV Energy plans to join the EIM in 2015 and Puget Sound Energy announced in March 2015 that it will join in 2016.
Quarterly Informational Benefits Report
The benefits report released on February 11, 2015 showed the EIM produced estimated benefits of $5.97 million in the market’s two months of operation. This is in line with the prelaunch study (PDF) that found annual benefits would range from $21 million to $129 million. See news release (PDF)
Information for transmission customers and stakeholders
Information on EIM can be found on PacifiCorp’s Open Access Same-Time Information System (OASIS).
For more information, visit the ISO website
PacifiCorp and the ISO received a UVIG 2015 Achievement Award for leadership in the design, development and deployment of the energy imbalance market. Learn more