SASKPOWER OPEN ACCESS TRANSMISSION TARIFF

SASKPOWER OPEN ACCESS TRANSMISSION TARIFFFor determining TRM values, probable worst case generating patterns and worst case loadforecasts shall be used, for the time frame under consideration. The generation patterns shallconsider high coal generation, low and high hydro conditions, with and without prior generatingunit outages.Determination of CBMThe CBM component represents a margin that reserves transmission capability on the interface toallow generating reserves, where reserve sharing agreements exist, to be imported when required.SaskPower provides its own reserves. There are currently no reserve sharing agreements;therefore, for SaskPower CBM = 0.Determination of ETCETC represents the already committed (prior to the implementation of SaskPower’s OATT) useof the particular path for which ATC is being calculated. For example, the existing transmissionagreement that allows the transfer of power from Island Falls through the Manitoba Hydro –SaskPower 230 kV interface, would be considered an ETC.Counter SchedulesBecause the scheduled flows are physical quantities, they can be summed with respect todirection at the interface. Two equal opposing schedules will physically cancel each other andmake room for a third recallable schedule to actually flow across the interface. This practice isknown as counter scheduling.The reservations represented by RES cannot be handled as counter reservations because theremay not be scheduled energy associated with them and, hence, no physical net effect necessarilyexists.Frequency of ATC DeterminationThe frequency of ATC calculation shall be consistent with the period over which thetransmission service is being offered.Page | 113