Trade between ARPs
The Hub allows Access Responsible Parties (ARPs) to exchange energy on both a day-ahead and an intraday (i.e. same-day) basis.
Both the buyer and seller submit nominations before a certain time on the day prior to transmission. If the purchase and sale nominations for exchanges between two ARPs do not correspond, tariffs for inconsistency will be applied.
An intraday Hub allows the ARPs to exchange energy on a same-day basis and so balance their portfolio of activities. Nominations for these exchanges may be submitted as late as 2 p.m. (first gate) and 2:30 p.m. (second gate).