IEEE Benchmark Year 2019 Results for 2018 Data

2019 General MeetingDistribution Reliability Working Group

Atlanta, Georgia

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Background to IEEE DRWG Benchmark Study

1. Initiated in 2003, conducted annually2. Participants are anonymous with key identifier to

retain anonymity3. Participation list is not revealed to anyone4. Each participant can choose to share their results5. No inference is made about good or bad reliability6. Intended to provide information for users to assess

their performance relative to peers7. Called the 2019 Study (for 2018 Results)

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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, although we strive to have the

differences minimized

• IEEE 1366-2003/2012 • addresses data issues by clearly defining the rules (i.e. what data should be

excluded)• It DOES NOT address the data collection issues• Companies may not report all forms of outages, due to data collection issues or

other reasons3

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Northwest: 10 Participants

Southwest: 12 Participants

Midwest: 19 Participants

South: 9 Participants Southeast : 5

Participants

Northeast: 6 Participants

Mid-Atlantic: 26 Participants

Regions represented by the participants2019 Benchmark Study

Spans States or Other: 3

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Classification of Respondents

• 85,258,061 customers represented in North America

• 2019 Survey– 7 Small (=< 100,000 customers)– 56 Medium (>100,000 and <1,000,000 customers) – 32 Large (>= 1M customers)

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Respondents•About 250 companies have responded at some time•2019 Survey: 90 entries responded

All Participants 90 SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE0 MIN 31 28 28 28 0.4 0.3 0.3 0.3 62 621 Q1 127 85 83 75 1.1 0.9 0.8 0.7 117 952 MEDIAN 209 123 110 102 1.4 1.1 0.9 0.8 162 1093 Q3 399 168 150 145 1.7 1.4 1.1 1.0 251 1334 MAX 3444 535 500 463 3.4 2.5 2.5 1.8 1177 247

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Respondents by Utility SizeQuartile Small 7 SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE

0 MIN 52 29 30 29 0.8 0.4 0.6 0.4 68 661 Q1 75 62 59 54 0.9 0.8 0.8 0.6 82 722 MEDIAN 113 98 70 58 1.3 1.1 0.8 0.8 94 853 Q3 331 167 135 100 1.9 1.4 1.0 0.8 135 1104 MAX 367 190 157 148 3.0 2.4 1.2 1.1 220 134

Quartile Medium 56 SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE0 MIN 31 28 28 28 0.4 0.3 0.3 0.3 62 621 Q1 125 88 84 78 1.1 0.9 0.8 0.7 115 952 MEDIAN 184 133 111 106 1.4 1.1 0.9 0.9 157 1093 Q3 338 162 145 144 1.7 1.5 1.1 1.1 236 1344 MAX 3444 484 466 400 2.9 2.3 2.2 1.8 1177 207

Quartile Large 32 SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI IEEE0 MIN 49 49 49 48 0.5 0.5 0.5 0.5 102 691 Q1 170 86 84 76 1.1 0.8 0.8 0.8 144 1002 MEDIAN 282 112 106 96 1.4 1.0 0.9 0.8 181 1143 Q3 501 170 154 147 1.7 1.3 1.1 1.0 363 1364 MAX 1292 535 500 463 3.4 2.5 2.5 1.8 595 247

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Historic SAIDI-IEEE & Total

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Historic SAIFI-IEEE & Total

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Historic CAIDI-IEEE & Total

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2019 SAIDIOrdered by IEEE w/ME, Feed & Plan

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2019 SAIFIOrdered by IEEE w/ME, Feed & Plan

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Total (STD) SAIDI 2019

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Total (STD) SAIFI 2019

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Total (STD) CAIDI 2019

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Major Event Excluded (IEEE SAIDI 2019)

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Major Event Excluded (IEEE SAIFI 2019)

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Major Event Excluded (IEEE CAIDI 2019)

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Distribution Only (WOF) SAIDI 2019

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Distribution Only (WOF) SAIFI 2019

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Distribution Only (WOF) CAIDI 2019

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Forced Distribution Only (WOP) SAIDI 2019

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Forced Distribution Only (WOP) SAIFI 2019

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Forced Distribution Only (WOP) CAIDI 2019

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Questions

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