Reliability Report -- 1999 - Pennsylvania Public Utility Commission

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Executive Summary The Electricity Generation Customer Choice and Competition Act mandates that the Pennsylvania Public Utility Commission (Commission) ensure that levels of reliability that existed prior to the restructuring of the electric utility industry continue in the new competitive markets. 1 In response to this mandate, the Commission adopted reporting requirements designed to ensure the continuing safety, adequacy and reliability of the generation, transmission and distribution of electricity in the Commonwealth. 2 The Commission also established reliability benchmarks and standards to measure the performance of each electric distribution company (EDC). 3 Given the uncertainty of weather and other events that can affect reliability performance, the Commission has stated that EDCs should set goals to achieve benchmark performance in order to prepare for those times when unforeseen circumstances push the indices above the benchmark. 4 In recognition of these unforeseen circumstances, the Commission set the performance standard as the minimum level of EDC reliability performance. The standard is the level of performance beyond which the company must either justify its poor performance or provide information on the corrective measures it will take to improve performance. Performance that does not meet the standard for any reliability measure may be the threshold for triggering additional scrutiny and potential compliance enforcement actions. In 2010, 10 of the 11 EDCs achieved compliance with the 12-month Customer Average Interruption Duration Index (CAIDI) performance standard for duration of service outages, and six EDCs performed better than the 12-month CAIDI performance benchmark. When measured on a company-wide basis, these six EDCs provided restoration of service in a manner that was statistically timelier than was experienced over the five years prior to the restructuring of the electric utility industry. Ten of the 11 EDCs achieved compliance with the 12-month System Average Interruption Frequency Index (SAIFI) performance standards for the average frequency of service outages per customer, and have maintained the number of customer outages at a statistically acceptable level. Eight EDCs performed better than the 12-month SAIFI performance benchmark, thereby reducing average customer outage levels below those experienced over the five years prior to the restructuring of the electric utility industry. As mandated, enforcement of the three-year rolling average standard began with the utilities’ filing of their 2006 annual reports. The three-year performance standard only allows a deviation of 10 percent from the reliability index benchmark, as compared with the 20 percent or 35 percent deviations allowed 5 by the 12-month performance standard. This year, we have assessed the average reliability performance of EDCs over a three-year period, utilizing data from 2008, 2009 and 2010. Overall, the three-year average performance has slightly improved. One EDC failed to meet its rolling three-year CAIDI performance standard, and one EDC failed to meet its rolling three-year SAIFI performance standard (as compared to three EDCs in the previous year’s comparison. No EDC 1 Act of Dec. 3, 1996, P.L. 802, No. 138, 66 Pa.C.S. Sec. 2801 et. seq. 2 Docket No. L-00970120; 52 Pa. Code §§ 57.191-57.197. 3 Docket No. M-00991220. 4 Docket No. M-00991220, Page 25. 5 For an explanation of performance standards, see Section 2, page 4.
exceeded the SAIDI standards and the aggregate SAIDI minutes for 2010 were 67 minutes less than that of 2009. In addition to monitoring the reliability performance of the EDCs, the Commission established inspection and maintenance standards that are appropriate for electric transmission and distribution systems. 6 Biennial plans for the periodic inspection, maintenance, repair and replacement of facilities, designed to meet performance benchmarks and standards, were filed with the Commission and subsequently approved by the Bureau of CEEP. 6 Docket No. L-00040167.
Page 1 and 2: ElectricService Reliabilityin Penns
Page 6: Table of Contents Section 1 - Intro
Page 9 and 10: and procedures in place to adequate
Page 11 and 12: trees. This analysis is helpful in
Page 13 and 14: Pennsylvania Code, effective Sep. 2
Page 15 and 16: Section 3 - Statistical Utility Per
Page 17 and 18: Utility-Specific Performance Data T
Page 19 and 20: Figure 3 Citizens’ Customer Avera
Page 21 and 22: Duquesne Light Company In 2010, Duq
Page 23 and 24: Figure 9 Duquesne outage causes (pe
Page 25 and 26: Figure 11 Met-Ed Customer Average I
Page 27 and 28: PECO Energy Company In 2010, PECO
Page 29 and 30: Figure 17 PECO outage causes (perce
Page 31 and 32: Figure 19 Penelec Customer Average
Page 33 and 34: Pennsylvania Power Company In 2010,
Page 35 and 36: Figure 25 Penn Power outage causes
Page 37 and 38: In 2010, the major cause of service
Page 39 and 40: Figure 30 Pike County outage tracki
Page 41 and 42: Figure 32 PPL System Average Interr
Page 43 and 44: In 2010, equipment failure was attr
Page 45 and 46: Figure 38 UGI outage tracking (numb
Page 47 and 48: Figure 39 Wellsboro Customer Averag
Page 49 and 50: West Penn Power Company In 2010, We
Page 51 and 52: Figure 45 West Penn outage causes (
Page 53 and 54:
Appendix A - Electric Reliability I
Page 55 and 56:
Appendix B - Modifications to Inspe
Page 57 and 58:
Modifications to Inspection and Mai
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Reliability Report -- 1999 - Pennsylvania Public Utility Commission

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