March 7, 2008 ARC Event

March 7, 2008 ARC Event

Friday March 07, 2008 from 10:05 EST through 10:30 EST the Midwest ISO invoked the ARC procedure due to a 1,000 MW Net Schedule Interchange obligation change over a ten minute period created by schedule changes. Up to 65 percent of the available ARC operating reserves were utilized during this period to correct the imbalance. There were no ARS events initiated during the event.