What has changed in the day-before checkout process?
Starting in June 2008, RTM scheduling will consider the DAM cleared status of a transaction before the timestamp of the submittal to the RTM. With this change, the timestamp is not as critical to the RTM scheduling process as it was before. Therefore, the ISO has eliminated the action of denying transactions that were submitted prior to noon the day-before the Operating Day that do not pass the day-before checkout process with the neighboring control area. This change is incorporated in OP 9, Scheduling and Dispatch of External Contracts. The result of this change is that customers can submit transactions up to 10 days prior to the start of the transaction to be considered ONLY in the RTM. Customers no longer have to wait until after noon the day-before the Operating Day to submit transactions for consideration in ONLY the RTM.
