massoutage

County annual report · FIPS 53073

2025 Whatcom County, WA Power Outage Report

In 2025, customers in Whatcom County, WA went without power for an average of 6.7 hours, a total of 380K customer-hours (Washington average 7.0 hours). That ranks 17th worst of 33 Washington counties and 1199th of 3,000 nationally.

Summary data CSVJSON
Avg hrs / customer
6.7
56,747 customers
Customer-hours out
380K
Peak customers out
6,129
Outages ≥1,000 out
27
0 of 10,000+ · 607 total
Longest outage
8d 16h
began June 10, 2025
Rank in state
17th/33
1199th of 3,000 US

Compared with WA, the US and 2024

Whatcom County, WA average hours without power per customer compared with state and national averages, 2025Whatcom County 6.7 hours, Washington average 7.0 hours, US average 5.9 hours, Whatcom County, 2024 9.8 hoursWhatcom CountyWhatcom County6.7hWashington averageWashington average7.0hUS averageUS average5.9hWhatcom County, 2024Whatcom County, 20249.8h
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Average hours without power per customer in 2025; last bar is this county in 2024.

Month by month

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Whatcom County, WA customer-hours without power by month, 2025Jan 73K, Feb 27K, Mar 17K, Apr 8,616, May 12K, Jun 17K, Jul 17K, Aug 26K, Sep 27K, Oct 36K, Nov 17K, Dec 102K050k100k150k73KJan27KFeb17KMar8,616Apr12KMay17KJun17KJul26KAug27KSep36KOct17KNov102KDec
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Customer-hours; December was the worst month.

Whatcom County year over year

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Whatcom County, WA: average hours without power per customer by year2015: 35.0h; 2016: 12.6h; 2017: 17.5h; 2018: 6.4h, coverage 71%; 2019: 6.7h, coverage 86%; 2020: 12.0h, coverage 87%; 2021: 21.7h, coverage 87%; 2022: 10.5h, coverage 87%; 2023: 5.7h; 2024: 9.8h; 2025: 6.7h0102030400%50%100%35.0h201512.6h201617.5h20176.4h20186.7h201912.0h202021.7h202110.5h20225.7h20239.8h20246.7h2025
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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 Whatcom County, 2025

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 15, 2025 09:30December 20, 2025 01:004d 15h6,12978K
2June 21, 2025 15:45June 22, 2025 02:1510h 30m5,0258,647
3September 3, 2025 22:00September 4, 2025 08:4510h 45m2,9954,628
4February 2, 2025 01:00February 2, 2025 10:309h 30m2,2778,922
5August 4, 2025 16:45August 9, 2025 19:155d 2h2,2574,629
6July 23, 2025 13:30July 24, 2025 03:3014h2,2063,347
7October 12, 2025 18:00October 14, 2025 16:151d 22h2,06911K
8November 27, 2025 22:30November 28, 2025 02:454h 15m1,9621,979
9April 10, 2025 16:00April 14, 2025 21:004d 5h1,8033,858
10February 1, 2025 04:15February 1, 2025 14:1510h1,7964,516

Outage episodes by size in 2025: 117 reached 100+ customers, 27 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 Whatcom County reported on EIA Form 861 for 2025, or their most recent earlier filing. Utility-wide figures, not county-specific.

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UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Puget Sound Energy Inc202419.9 hrs2.203.4 hrs1.20
Bonneville Power Administration-----
Puget Sound Energy Inc,pugetsoundenergy-----
City of Blaine - (WA)-----
City of Sumas - (WA)-----
PUD No 1 of Whatcom 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 n/a of Washington's customers in 2025; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 56,747 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. Whatcom County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Whatcom County, WA annual power outage report, 2025, 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/2025/washington/whatcom-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON