IEEE Benchmark Year 2021 Results for 2020 Data

2021 Distribution Reliability Working Group

Virtual Meeting

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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

7. Called the 2021 Study (for 2020 Results)2

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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 reasons

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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: 9

Participants

Southwest: 11

Participants

Midwest: 15

Participants

South: 11

Participants Southeast : 5

Participants

Northeast: 7

Participants

Mid-Atlantic:

23 Participants

Regions represented by the participants

2021 Benchmark Study

Spans States or Other: 3

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Respondents•About 260 companies have responded at some time

•2021 Survey: 84 entries responded

SAIDI ALL SAIDI IEEE SAIDI WOF SAIDI SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL CAIDI

MIN 30 27 24 23 0.43 0.40 0.29 0.28 28 24

Q1 151 91 87 83 1.03 0.85 0.75 0.68 136 98

MEDIAN 321 127 112 104 1.42 1.06 0.90 0.85 206 118

Q3 525 168 152 144 1.86 1.33 1.10 1.02 333 135

MAX 8701 440 417 384 6.31 5.60 5.45 5.53 2711 230

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Respondents by Utility Size

Quartile Small 4 SAIDI ALL SAIDI IEEE SAIDI WOF

SAIDI

WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL

CAIDI

IEEE

0 MIN 150 107 108 86 1.06 1.06 0.82 0.63 107 77

1 Q1 155 144 120 98 1.32 1.14 0.89 0.66 117 88

2 MEDIAN 296 187 136 104 1.68 1.42 0.96 0.81 134 119

3 Q3 438 224 151 114 2.39 1.96 1.04 0.97 166 146

4 MAX 444 244 158 139 3.68 2.82 1.14 1.00 222 148Quartile

Medium 49 SAIDI ALL SAIDI IEEE SAIDI WOF

SAIDI

WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL

CAIDI

IEEE

0 MIN 30 27 24 23 0.43 0.40 0.29 0.28 28 24

1 Q1 152 99 89 86 0.99 0.87 0.72 0.68 141 100

2 MEDIAN 312 128 117 108 1.36 0.98 0.89 0.83 205 123

3 Q3 567 164 149 137 1.94 1.37 1.23 1.14 385 136

4 MAX 8701 407 391 363 6.31 5.60 5.45 5.53 2711 198

Quartile Large 31 SAIDI ALL SAIDI IEEE SAIDI WOF

SAIDI

WOP SAIFI ALL SAIFI IEEE SAIFI WOF SAIFI WOP CAIDI ALL

CAIDI

IEEE

0 MIN 84 40 40 32 0.83 0.55 0.55 0.47 98 73

1 Q1 147 84 82 80 1.04 0.82 0.80 0.69 145 98

2 MEDIAN 339 103 95 91 1.45 1.06 0.91 0.86 215 108

3 Q3 484 169 154 146 1.73 1.21 1.07 1.00 301 131

4 MAX 3117 440 417 384 3.29 2.85 2.20 2.03 1550 230

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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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Total (STD) SAIDI 2021

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Total (STD) SAIFI 2021

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Total (STD) CAIDI 2021

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Major Event Excluded (IEEE SAIDI 2021)

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Major Event Excluded (IEEE SAIFI 2021)

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Major Event Excluded (IEEE CAIDI 2021)

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Questions

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