massoutage

County annual report · FIPS 53029

2024 Island County, WA Power Outage Report

In 2024, customers in Island County, WA went without power for an average of 11.7 hours, a total of 1.0M customer-hours (Washington average 12.1 hours). That ranks 5th worst of 34 Washington counties and 807th of 2,990 nationally.

Summary data CSVJSON
Avg hrs / customer
11.7
87,196 customers
Customer-hours out
1.0M
Peak customers out
41,350
Outages ≥1,000 out
25
4 of 10,000+ · 505 total
Longest outage
6d
began August 11, 2024
Rank in state
5th/34
807th of 2,990 US

Compared with WA, the US and 2023

Island County, WA average hours without power per customer compared with state and national averages, 2024Island County 11.7 hours, Washington average 12.1 hours, US average 12.6 hours, Island County, 2023 2.4 hoursIsland CountyIsland County11.7hWashington averageWashington average12.1hUS averageUS average12.6hIsland County, 2023Island County, 20232.4h
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Average hours without power per customer in 2024; last bar is this county in 2023.

Month by month

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Island County, WA customer-hours without power by month, 2024Jan 25K, Feb 46K, Mar 21K, Apr 33K, May 8,249, Jun 20K, Jul 12K, Aug 9,660, Sep 25K, Oct 35K, Nov 327K, Dec 459K0200k400k600k25KJan46KFeb21KMar33KApr8,249May20KJun12KJul9,660Aug25KSep35KOct327KNov459KDec
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Customer-hours; December was the worst month.

Island County year over year

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Island County, WA: average hours without power per customer by year2015: 9.8h; 2016: 3.0h; 2017: 3.2h; 2018: 3.3h, coverage 71%; 2019: 1.3h, coverage 86%; 2020: 10.1h, coverage 87%; 2021: 32.7h, coverage 87%; 2022: 26.0h, coverage 87%; 2023: 2.4h; 2024: 11.7h; 2025: 17.8h0102030400%50%100%9.8h20153.0h20163.2h20173.3h20181.3h201910.1h202032.7h202126.0h20222.4h202311.7h202417.8h2025
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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 Island County, 2024

The 10 outage episodes with the most customers out at once. Times are UTC.

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#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1December 11, 2024 19:45December 17, 2024 04:305d 8h41,350449K
2November 4, 2024 11:00November 7, 2024 03:302d 16h38,75092K
3February 28, 2024 11:30March 1, 2024 07:301d 20h37,40225K
4November 20, 2024 02:45November 25, 2024 20:155d 17h15,789230K
5October 18, 2024 16:30October 21, 2024 23:003d 6h4,52532K
6April 18, 2024 14:00April 18, 2024 21:457h 45m4,13621K
7December 18, 2024 01:15December 19, 2024 11:301d 10h3,5146,493
8June 4, 2024 08:15June 5, 2024 00:1516h3,1445,898
9January 6, 2024 16:45January 12, 2024 05:305d 12h2,70013K
10July 18, 2024 08:00July 19, 2024 09:001d 1h2,5573,956

Outage episodes by size in 2024: 67 reached 100+ customers, 25 reached 1,000+ customers, 4 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 Island County reported on EIA Form 861 for 2024, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Puget Sound Energy Inc202419.9 hrs2.203.4 hrs1.20
PUD No 1 of Snohomish County202410.3 hrs2.483.0 hrs1.56
Puget Sound Energy Inc,pugetsoundenergy-----

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Washington's customers in 2024; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 87,196 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. Island County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Island County, WA annual power outage report, 2024, 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2024/washington/island-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON