January 30, 2008 Arc Event

Thursday January 30, 2008 from 7:40 EST through 08:00 EST the Midwest ISO invoked the ARC procedure due to a 2,100 MW Net Schedule Interchange obligation created by TLR curtailments. 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 although there was an active ARS event that was started prior to event.