IEEE Benchmark Year 2015 Results for 2014 Data

Follow up to July 29, 2015 General Meeting Distribution Reliability Working Group

Denver, Colorado

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Background to IEEE DRWG Benchmark Study

1. Initiated in 2003, conducted annually 2. Participants are anonymous with key identifier to

retain anonymity 3. Participation list is not revealed to anyone 4. Each participant can choose to share their results 5. No inference is made about good or bad reliability 6. Intended to provide information for users to assess

their performance relative to peers

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Benchmarking

• Using annual key metrics (SAIDI, SAIFI and CAIDI) to assess performance of a system may be useful, however, needs to be tempered

• DRWG Study attempts to identify various aspects that could cause a difference in reported metrics

• Data may not be directly comparable, since – Data collection & system differences exist – Certain exclusion differences can occur

• IEEE 1366-2003/2012 • addresses data basis issues by clearly defining the rules. • It DOES NOT address the data collection issues • Companies may not report all forms of outages, due to data collection issues or

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Region 0: Spans States or Unknown

Region 1: Northeast

Region 2: Mid-Atlantic

Region 3: Southeast

Region 4: Midwest

Region 5: Southwest

Region 6: South

Region 7: Northwest

Northwest: 12 Participants

Southwest: 13 Participants

Midwest: 22 Participants

South: 12 Participants Southeast : 3

Participants

Northeast: 12 Participants

Mid-Atlantic: 25 Participants

Regions represented by the participants 2015 Benchmark Study

Spans States or Other:3

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28 Participants

1 Participants

11 Participants

5 Participants

15 Participants

10 Participants

30 Participants

2 Participants

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Classification of Respondents • 77,860,837 customers represented in North America • Small, Medium, Large

– Small =< 100,000 customers – Medium >100,000 and <1,000,000 customers – Large >= 1M customers

• 2014 Survey – 13 Small – 59 Medium – 30 Large

• Circuit Mileage Reported by all entrants – 2.1 million miles, for which about ¾ reported on

overhead (75%) versus underground (25%) 6

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Respondents •About 240 companies have responded at some time •2015 Survey: 94 unique entries responded, 102 total entries

All Utilities SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE CAIDI WOF CAIDI WOPMIN 31 23 23 21 0.39 0.29 0.28 0.25 55 53 53 53

First Decile 84 54 48 44 0.76 0.66 0.61 0.55 87 80 81 81Q1 115 86 80 71 1.02 0.86 0.75 0.71 106 91 94 92

MEDIAN 168 115 108 101 1.25 1.07 0.90 0.84 135 104 112 111Q3 261 159 144 136 1.62 1.33 1.16 1.09 181 127 134 137

MAX 880 505 487 451 4.39 3.74 3.74 3.74 648 248 256 306

Quartile Small 13 SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE CAIDI WOF CAIDI WOP

0 MIN 36 28 28 27 0.43 0.31 0.31 0.30 73 65 73 73First Decile 90 50 42 41 1.00 0.74 0.53 0.52 83 72 76 76

1 Q1 109 81 65 65 1.24 0.97 0.86 0.71 86 82 86 852 MEDIAN 161 111 103 94 1.67 1.31 0.97 0.95 111 91 91 923 Q3 351 234 190 144 1.91 1.56 1.46 1.15 159 131 130 1354 MAX 546 297 258 252 2.65 2.20 1.88 1.68 263 167 192 202

Quartile Medium 59 SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE CAIDI WOF CAIDI WOP

0 MIN 31 23 23 21 0.39 0.29 0.28 0.25 55 53 53 53First Decile 60 52 47 42 0.74 0.64 0.59 0.59 86 78 80 81

1 Q1 120 92 82 80 1.02 0.89 0.76 0.71 103 93 94 942 MEDIAN 167 121 111 107 1.25 1.09 0.92 0.87 135 102 113 1123 Q3 261 157 141 136 1.61 1.32 1.22 1.15 175 122 131 1344 MAX 873 505 487 451 4.39 3.74 3.74 3.74 469 213 225 234

Quartile Large 30 SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE CAIDI WOF CAIDI WOP

0 MIN 80 44 44 44 0.68 0.51 0.49 0.49 88 68 68 68First Decile 89 66 66 56 0.76 0.66 0.65 0.65 105 85 92 89

1 Q1 118 87 83 73 0.98 0.80 0.74 0.69 116 98 104 962 MEDIAN 170 109 101 90 1.13 0.96 0.85 0.78 140 110 114 1123 Q3 228 155 142 122 1.46 1.18 1.04 0.97 192 134 135 1434 MAX 880 468 439 401 2.19 2.10 1.92 1.65 648 248 256 306

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The following slides… • Show company performance using the IEEE 2.5 Beta method to

segregate data into: – Day-to-Day operating Indices vs. – Performance considering the whole customer experience (All) – Separate data collected to evaluate impact of transmission

(WOF) and both transmission and planned outages (WOP) – Segregation by transmission (feed), planned and distribution

• To date more than 240 companies have participated in our benchmarking at sometime.

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SAIDI 2015, segregated by D&T for ME & Day to Day

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SAIFI 2015, segregated by D&T for ME & Day to Day

2005-2015 SAIDI Quartiles All Companies

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2005-2015 SAIFI Quartiles All Companies

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2005-2015 CAIDI Quartiles All Companies

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