massoutage

County annual report · FIPS 53007

2021 Chelan County, WA Power Outage Report

In 2021, customers in Chelan County, WA went without power for an average of 0.0 hours, a total of 236 customer-hours (Washington average 8.7 hours). That ranks 33rd worst of 33 Washington counties and 2959th of 2,974 nationally.

Summary data CSVJSON
Avg hrs / customer
0.0
50,456 customers
Customer-hours out
236
Peak customers out
105
Outages ≥1,000 out
0
0 of 10,000+ · 1 total
Longest outage
2h 15m
began October 22, 2021
Rank in state
33rd/33
2959th of 2,974 US

Compared with WA, the US and 2020

Chelan County, WA average hours without power per customer compared with state and national averages, 2021Chelan County 0.0 hours, Washington average 8.7 hours, US average 8.9 hours, Chelan County, 2020 0.4 hoursChelan CountyChelan County0.0hWashington averageWashington average8.7hUS averageUS average8.9hChelan County, 2020Chelan County, 20200.4h
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Average hours without power per customer in 2021; last bar is this county in 2020.

Month by month

CSVJSON
Chelan County, WA customer-hours without power by month, 2021Jan 0, Feb 0, Mar 0, Apr 0, May 0, Jun 0, Jul 0, Aug 0, Sep 0, Oct 236, Nov 0, Dec 001002003000Jan0Feb0Mar0Apr0May0Jun0Jul0Aug0Sep236Oct0Nov0Dec
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Customer-hours; October was the worst month.

Chelan County year over year

CSVJSON
Chelan County, WA: average hours without power per customer by year2015: no data; 2016: no data; 2017: no data; 2018: no data; 2019: 0.2h, coverage 86%; 2020: 0.4h, coverage 87%; 2021: 0.0h, coverage 87%; 2022: 0.0h, coverage 87%; 2023: 1.1h; 2024: 3.1h; 2025: 12.0h0510150%50%100%n/a2015n/a2016n/a2017n/a20180.2h20190.4h20200.0h20210.0h20221.1h20233.1h202412.0h2025
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Average hours without power per customer. Line: EAGLE-I coverage, share of customers tracked (right axis).

Coverage line is EAGLE-I's share of Washington customers tracked each year.

Biggest outages in Chelan County, 2021

The 1 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1October 22, 2021 12:45October 22, 2021 15:002h 15m105236

Outage episodes by size in 2021: 1 reached 100+ customers, 0 reached 1,000+ customers, 0 reached 10,000+ customers.

Utility reliability filed with the EIA

SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Chelan County reported on EIA Form 861 for 2021, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Bonneville Power Administration-----
PUD No 1 of Chelan County-----

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 87% of Washington's customers in 2021; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 50,456 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
  • An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
  • Years loaded: 2015–2025. Chelan County has data for 2019–2025.

Cite this report

MassOutage (massoutage.com), Chelan County, WA annual power outage report, 2021, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/). https://massoutage.com/reports/2021/washington/chelan-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON
Chelan County by year:202520242023202220202019
Live outages in Chelan County2021 Washington report2021 US report