Annual Outage Data

Reliability Review

What is Reliability?

Reliability Factors

How Do We Improve Reliability?

Reliability is improved by reducing outage frequency and duration through:

Reliability Statistics

What Happened in 2022?

2022 Overview

Key Outage Indicator Comparison

EVENT Totals 2022 Totals 2021 Previous 5 Year Average Change
Outages 278 312 312 11%
Interruptions 105,949 102,091 69,262 53%
Customer Hours 626,193 368,833 239,927 161%

Outage Causes

Equipment outages 2022 2021
Conductor 16 7
Transformer 12 9
Aluminum (Insul) URD 10 5
Cut-Out 8 21
Fuse 5 8
Insulator 5 1
Aluminum Wire 4 4
Connector/Splice/Jumper 4 3
Copper Wire 3 5
Terminations/Potheads 2 3
Circuit Breaker 2 5
Crossarm 1 2
Recloser 1 1
Poles 1 0
Cubicle/Module 1 1
Lightning Arrester 1 0
Grand Total 76 79

Tree Related Outages

Analysis

Tree Related Outages by Year

Possible Areas of Focus

Looking at locations with 3 or more outages, we should take a closer look at these areas:

Area Outages Customer Hours Customers Affected
North Shore Road 4 6,549 1,032
Mox Chehalis Road 4 2,415 1,318
Wynochee Valley Road 6 2,026 672
Black Creek Road 3 1,466 134
North River Road 5 1,398 285
South Shore Road 5 1,242 362
Wiskah Road 3 1,141 340
Walker Road 4 939 207
Newskah Road 3 484 55
McNutt Road 3 249 52
West Satsop Road 3 96 39

Wrap-Up

Conclusion

Overall

  • Almost all key indicators were up compared to the previous year and the 5 year average
  • Impact from motor vehicles was unusually high

Trees

  • Tree related outages were down compared to the previous year and the 5 year average

Continued Focus

  • Stay focused on vegetation management overall and focus on improvements in high outage areas

Future

  • Review/update sectionalizing to improve exposure

Questions?

Annual Outage Data (PDF)