Users are encouraged to adjust their NERC eTag first. Then submit the corresponding modification to the EES Transaction.

When the request for adjustment is made to the NERC eTag, the status of that eTag modification will be "Pending". EES only recognizes the 'current' eTag; the pending adjustment is not yet part of the 'current' eTag. Since the eTag modification is pending, the current eTag will not match the modified EES transaction. This will result in the requested schedule change in EES to receive a Pending Action status.

It is not necessary to re-submit the EES schedule once the eTag adjustment is implemented. EES will periodically monitor the status of requested changes to the eTag. Once the eTag adjustment is implemented, EES will validate the eTag against the portion of the EES schedule that has been modified.

If the modified profiles match, and there are no other errors, the status in EES will become Pre-Approved; otherwise, the status will remain in Pending Action. This process will not affect any portion of a transaction that has been previously approved by ISO-NE.

Since this process is dependent on bridges running between multiple ISO and non-ISO systems it is recommended that the user monitor the transaction to ensure the process has completed successfully.

If your EES transaction and eTag modifications were submitted prior to the submittal deadline, EES will perform the validation defined above. Due to this validation, ISO-NE will continue to monitor for Pre-Approved transactions after the submittal deadline. However, under no circumstances will ISO-NE approve a transaction that has an eTag or EES request time after the submittal deadline.

DISCLAIMER: The following answer is presented for information only, and provides descriptions of information contained in NEPOOL Manual 11 and NEPOOL OP-9, but in no way supersedes those documents. This document also contains references to the NYISO processes. These statements regarding the NYISO market are made from the perspective of ISO-NE and in no way represent NYISO market rules. The NYISO market rules should be referred to for any details on the NYISO market.

The following information describes features of the ISO-NE Day-Ahead Markets (DAM) and Real-Time Markets (RTM) as they apply to External Transactions scheduling and the interaction with the NYISO Day Ahead and Real-Time markets. Market participants have many options on how they may submit transactions in to the various markets. The following interaction of the DAM and RTM between the two Control Areas should be considered when planning that submittal.

Day-Ahead Market

The Day-Ahead Markets(DAM) in NYISO and ISO-NE clear entirely independent of each other. Transactions submitted to the NYISO DAM are cleared relative to only the NYISO market. Transactions submitted to the ISO-NE DAM are cleared relative to only the ISO-NE market. There is no comparison of results of any transactions between the ISO-NE DAM and the NYISO DAM. In the ISO-NE market the results of the DAM are financial, creating balancing obligations for the RTM, but do not, in and of themselves, result in transaction scheduling in Real-Time. In the NYISO DAM, due to reliability concerns and software constraints, all cleared DAM transactions are processed as offers of physical energy in real-time. NYISO Virtual Transaction scheduling, within the provisions of the NYISO Services Tariff, are not available at External Nodes.

Transition between Day Ahead Market and Real Time Market

In NYISO, the transactions that cleared the DAM automatically carry forward into the Hour-Ahead Market (HAM) as physical energy transactions for the reasons described above. In the ISO-NE market, transactions that cleared the DAM do not carry forward into the RTM. If a participant wants a RTM transaction to match a DAM obligation, the participant must specifically submit the transaction into the ISO-NE RTM.

Flowing Energy in Real-Time

In order for flow to occur in the Real-Time Market, a transaction must pass one or two checkout processes depending on its submittal time. The first checkout process is the day-before checkout, occurring anytime between 1200 and 1400 the day before the operating day. The term day-before checkout is used rather than day-ahead checkout to clearly separate this process from the clearing or any other aspect of the Day-Ahead Market. In the day-before checkout, the results of the NYISO DAM are compared to only those ISO-NE RTM transactions that were submitted prior to noon the day before the operating day. Transactions that pass this checkout are used in the ISO-NE reliability assessments. The NERC Tag is used as the common identifier and the MW profiles for the transactions in the two markets are compared. This information must match to 'pass' the checkout.

After ISO-NE issues a Minimum Generation Emergency Warning, any import transactions that were submitted to only the RTM are subject to reduction. If a Minimum Generation Emergency is declared, both internal generation and transactions that have cleared the DAM will be used to resolve the emergency condition.

The general submittal process is essentially unchanged. The energy transaction must be submitted to both the Day-Ahead Market and Real-Time Market by noon the day before operating day, it must link the Special Exception = Import Associated with ICAP, and must reference the ICAP Contract ID obtained from Internal Transactions User Interface. Once the flexible feature is utilized and the OASIS reservation is linked to the transaction, that reservation is applied to ALL hours of that transaction.