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System Average Interruption Frequency Index (SAIFI) <br /> SAIFI is defined as the average number of instances a customer on the utility system will experience an <br /> interruption during a specific time period. <br /> Since SAIFI is a sustained interruption index, only outages lasting longer than five minutes are included in <br /> the calculations. SAIFI is calculated by dividing the total number of customer interruptions by the average <br /> number of customers served during that time period. For example, a utility with 150 customer interruptions <br /> and 200 customers would have a SAIFI of .75 interruptions per customer. <br /> Table 4 <br /> Average SAIFI for all utilities that use the eReliability Tracker, belong to your region, and are <br /> grouped in your customer size class <br /> Your utility's SAIFI: 0.1428 <br /> Average eReliability Tracker Utility SAIFI 0.9615 <br /> Average SAIFI for Utilities Within Your Region 0.817 <br /> Average SAIFI for Utilities Within Your Customer Size Class 0.8387 <br /> Table 5 <br /> Summary statistics of the SAIFI data compiled from the eReliability Tracker <br /> Minimum Value 0.0019 <br /> First Quartile (25th percentile) 0.3184 <br /> Median Quartile (50th percentile) 0.621 <br /> Third Quartile(75th percentile) 1.0821 <br /> Maximum Value 20 <br /> Figure 4 <br /> Average SAIFI for all utilities that use the eReliability Tracker per region <br /> 1.8 <br /> 1.6 - 1.5575 <br /> 1.411 <br /> 1.4 - <br /> 1.2 - 1.0836 1.0366 <br /> 0.9556 <br /> a, 1 0.817 0.7453 <br /> co <br /> 0.8 0.5899 II <br /> ¢ 0.6 - 0.3925 <br /> 0.4 - <br /> 0.2 - . 0 <br /> 1 2 3 4 5 6 7 8 9 10 <br /> APPA Regions <br /> 5 <br /> 56 <br />