October 16, 2007 ARC Event

October 16, 2007 ARC Event

Tuesday October 16, from 06:55 EST through 07:25 EST the Midwest ISO invoked the ARC procedure due to a 1,000 MW Net Schedule Interchange obligation and actual load came in higher then forecasted. Up to 79% of the operating reserves were utilized during the procedure during this period to correct the imbalance. There were no ARS events during this procedure.