Reliability Report -- 1999 - Pennsylvania Public Utility Commission

Figure 2 SAIFI 2010 compar ison (per cent above or below benchmar k )
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Appendix A provides the actual 2010 reliability performance for each EDC and the benchmarks and
standards for each reliability index.
We also have assessed the average reliability performance of EDCs for a three-year period, utilizing data
from 2008, 2009 and 2010. Overall, the three-year average performance has improved. One EDC (Pike
County) failed to meet its rolling three-year CAIDI performance standard by 31 minutes. One EDC
(Met-Ed) failed to meet its rolling three-year SAIFI performance standard by 0.09, as compared to three
EDCs in the previous year’s comparison. No EDC exceeded the SAIDI standards, and all EDCs have
shown an improvement in their three-year SAIDI averages.
The actual 2008, 2009 and 2010 performance for each EDC and the results of the three-year
performance analysis also are displayed in Appendix A.
During 2010, 23 requests for exclusion of major events were filed by the EDCs. All of these requests
were approved, with the exception of one partial approval. A major event exclusion request may be
denied for a variety of reasons, including such things as the event not meeting the 10 percent threshold
of customers interrupted or the failure of equipment without supporting maintenance records. A brief
description of each major event is provided in the individual EDC sections.
Electric Service Reliability in Pennsylvania 2010 9