Exceptional dispatch mitigation in real time

The local market power mitigation phase 2 initiative, which is conducted in parallel with this initiative, will implement a dynamic competitive path assessment that flags paths as uncompetitive based on the amount of congestion present on the lines under review, and determines the triggers for exceptional dispatch mitigations. This initiative seeks to complement those changes by implementing a mechanism to identify and mitigate for exceptional dispatches that have local market power and create a set of default path designations to use should the dynamic assessment fail to produce a valid set of designations.

Outcome

On May 1, 2013 the ISO implemented a real-time dynamic competitive path assessment that uses actual market conditions to identify uncompetitive transmission constraints that require exceptional dispatch to resolve them. The same process was implemented in the day-ahead in April 2012. In addition, a set of default path designations was established for use should a dynamic competitive path assessment fail in production.

Initiative status

Implemented: May 1, 2013
FERC approval: April 29, 2013
Tariff amendment filing: February 21, 2013
Board of Governors approval: December 14, 2012