Reliability Report -- 1999 - Pennsylvania Public Utility Commission

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Three-year average electric reliability indices for 2008-10 Customer Average Interruption Duration Index (CAIDI) 3-Year 3-Year % Above (+) or EDC 2008 2009 2010 Average Standard Below (-) Standard Citizens' 64 75 98 79 115 -31.3 Duquesne Light 98 85 80 88 119 -26.3 Met-Ed (FE) 104 111 120 112 129 -13.4 PECO 124 106 126 119 123 -3.5 Penelec (FE) 142 117 124 128 129 -1.0 Penn Power (FE) 111 116 95 107 111 -3.3 Pike County 236 178 255 223 192 16.1 PPL 169 117 135 140 160 -12.3 UGI 135 105 99 113 186 -39.2 Wellsboro 91 96 76 88 136 -35.6 West Penn (FE) 168 166 190 175 187 -6.6 System Average Interruption Frequency Index (SAIFI) 3-Year 3-Year % Above (+) or EDC 2008 2009 2010 Average Standard Below (-) Standard Citizens' 0.26 0.20 0.19 0.22 0.22 -1.5 Duquesne Light 0.99 0.97 1.09 1.02 1.29 -21.2 Met-Ed (FE) 1.35 1.21 1.51 1.36 1.27 6.8 PECO 1.04 0.98 1.09 1.04 1.35 -23.2 Penelec (FE) 1.56 1.22 1.31 1.36 1.39 -1.9 Penn Power (FE) 1.13 0.75 1.01 0.96 1.23 -21.7 Pike County 0.46 0.60 0.60 0.55 0.67 -17.4 PPL 1.05 0.89 1.09 1.01 1.08 -6.5 UGI 0.67 0.76 0.48 0.64 0.91 -30.0 Wellsboro 1.07 1.21 0.98 1.09 1.35 -19.5 West Penn (FE) 1.16 0.97 1.00 1.04 1.16 -10.1 System Average Interruption Duration Index (SAIDI) 3-Year 3-Year % Above (+) or EDC 2008 2009 2010 Average Standard Below (-) Standard Citizens' 17 15 18 17 25 -33.3 Duquesne Light 97 82 87 89 153 -42.0 Met-Ed (FE) 139 134 181 151 163 -7.2 PECO 129 103 137 123 167 -26.3 Penelec (FE) 220 143 162 175 179 -2.2 Penn Power (FE) 125 87 95 102 136 -24.8 Pike County 109 106 153 123 129 -4.9 PPL 178 104 147 143 172 -16.9 UGI 90 80 48 73 170 -57.3 Wellsboro 98 117 74 96 185 -47.9 West Penn (FE) 195 161 191 182 217 -16.0 Note: GREEN = better than standard; RED = worse than standard. Electric Service Reliability in Pennsylvania 2010 47
Appendix B – Modifications to Inspection and Maintenance Intervals The Commission’s regulations provide the following relating to inspection and maintenance time frames: (c) Time frames. The plan must comply with the inspection and maintenance standards in subsection (n). A justification for the inspection and maintenance time frames selected shall be provided, even if the time frame falls within the intervals prescribed in subsection (n). However, an EDC may propose a plan that, for a given standard, uses intervals outside the Commission standard, provided that the deviation can be justified by the EDC’s unique circumstances or a cost/benefit analysis to support an alternative approach that will still support the level of reliability required by law. 52. Pa. Code § 57.198(c). Each EDC has filed its Biennial Inspection, Maintenance, Repair and Replacement Plan, pursuant to 52 Pa. Code § 57.198(a), which are effective for two calendar years. Most of the EDCs proposed modifications to the standards for some programs or parts of programs. The exemptions requested involved pole loading calculations, and the intervals for overhead line and transformer inspections and substations inspections. All plans have now been accepted. Compliance Group 1 plans became effective on Jan. 1, 2011. Compliance Group 2 plans will become effective on January 1, 2012. The following tables describe the exemptions that were requested and provide a summary of the justification for said exemptions. 48 Pennsylvania Public Utility Commission
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ElectricService Reliabilityin Penns
Page 4 and 5: Executive Summary The Electricity G
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: Appendix A - Electric Reliability I
Page 57 and 58: Modifications to Inspection and Mai
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Reliability Report -- 1999 - Pennsylvania Public Utility Commission

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