What does the NYISO MIS do with E-tags?
Our new system for electronically processing E-Tags was instituted in early spring, 2004. Upon receiving an E-Tag request, the NYISO MIS will compare the tag to the associated Transaction bid; one of the following statuses will be assigned to the E-Tag Request: APPROVE- A status of approve is assigned to the E-Tag if it is received before the hourly checkout provided the energy profile of the E-Tag closely matches the Transaction in the MIS. (See the links above for recent changes in accommodating transmission losses). STUDY This indicates that the energy profiles of the E-Tag and the Transactions are not close after accounting for losses. The MP should either modify the E-Tag or the Transaction. Any E-Tags which are in the STUDY status at the end of the approval window will be updated to Passive Approval (see above). DENY If the E-Tag is submitted after the hourly market close and it doesn’t closely match the Transaction’s energy profile, it will be denied by the NYISO. It will also b
