Settlement Zone Specific UFE Tolerances
As required by AUC Rule 021 section 4.2.2 2) d), the AESO makes the Average Zone UFE available to all Market Participants. The AESO has calculated the following values using the average of the last 12 months UFE averages for all settlement zones.
The purpose of the Settlement Zone Specific UFE is to account for any skew that may exist within each settlement zone. In order to meet the overall UFE tolerance guidelines, the UFE for any given zone must fall within the tolerances provided in AUC Rule 021, section 4.2. There are two types of tolerances: general and zone specific. The zone specific tolerances fit within the general tolerances. More specifically, the UFE must fall within the zone specific tolerances based on the below Average Zone UFE %. In addition, regardless of the zone specific range, the UFE must not exceed the general tolerances. The zone specific ranges were calculated by adding or subtracting the Zone Specific Threshold from the Average Zone UFE. Where the calculated value was greater than the General Threshold, the maximum value of the General Threshold was used – this has been indicated by the value in highlighted in yellow.
