January 17, 2007 ARC Event

Thursday January 17, 2008 from 19:00 EST through 19:20 EST the Midwest ISO invoked the ARC procedure due to a 1,100 MW Net Schedule Interchange obligation created by TLR curtailments. Up to 89 percent of the available ARC operating reserves were utilized during this period to correct the imbalance. There were no ARS events during the procedure.