5.3 ERMUSR 03-13-2018 - Laserfiche WebLink

Home Browse Search

System Average Interruption Duration Index (SAIDI) SAIDI is defined as the average interruption duration (in minutes) for customers served by the utility system during a specific time period. Since SAIDI is a sustained interruption index, only outages lasting longer than five minutes are included in the calculations. SAIDI is calculated by dividing the sum of all customer interruption durations within the specified time frame by the average number of customers served during that period. For example, a utility with 100 customer minutes of outages and 100 customers would have a SAIDI of 1. Note that in the tables below, scheduled and unscheduled calculations include major events. Also note that wherever major events are excluded, the exclusion is based on the APPA major event threshold. Table 2 Average SAIDI for all utilities that use the eReliability Tracker(with and without MEs), belong to your region, and are grouped in your customer size class All No MEs Unscheduled Scheduled Your utility's SAIDI: 32.3938 17.4218 30.6682 1.7254 Average eReliability Tracker SAIDI 161.7605 62.1498 157.4675 4.4295 Average SAIDI for Utilities Within Your Region 100.7792 52.9737 99.1595 1 1.72 Average SAIDI for Utilities Within Your Customer Size Class 230.6849 70.9849 226.9916 3.7064 Table 3 Summary statistics of the SAIDI data compiled from the eReliability Tracker All No MEs Unscheduled Scheduled Minimum Value 0.1282 0.1282 0.1282 0 First Quartile (25th percentile) 23.6535 10.6552 20.5479 0 Median Quartile(50th percentile) 54.863 27.2189 52.3865 0.097 Third Quartile(75th percentile) 120.8739 60.6194 114.7618 1.3001 Maximum Value 5208.0378 1412.0408 5199.7198 208 Figure 3 Average SAIDI for all utilities that use the eReliability Tracker per region 500 -448.1083 461.5984 r 450 - 4 400 - 350 - 0 300 -7t 250 - 227.6868 ' 200 - 179.1688 `° 150 125.3523 100.7792 95.5004 82.8786 100 - I 56.0832 . . 50 - 1 2 3 4 5 6 7 8 9 10 Association Regions 5 208