massoutage

County annual report · FIPS 53001

2020 Adams County, WA Power Outage Report

In 2020, customers in Adams County, WA went without power for an average of 2.9 hours, a total of 43K customer-hours (Washington average 4.2 hours). That ranks 24th worst of 37 Washington counties and 1908th of 3,019 nationally.

Summary data CSVJSON
Avg hrs / customer
2.9
14,910 customers
Customer-hours out
43K
Peak customers out
1,462
Outages ≥1,000 out
1
0 of 10,000+ · 416 total
Longest outage
8d
began September 8, 2020
Rank in state
24th/37
1908th of 3,019 US

Compared with WA, the US and 2019

Adams County, WA average hours without power per customer compared with state and national averages, 2020Adams County 2.9 hours, Washington average 4.2 hours, US average 8.7 hours, Adams County, 2019 0.8 hoursAdams CountyAdams County2.9hWashington averageWashington average4.2hUS averageUS average8.7hAdams County, 2019Adams County, 20190.8h
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Average hours without power per customer in 2020; last bar is this county in 2019.

Month by month

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Adams County, WA customer-hours without power by month, 2020Jan 533, Feb 24K, Mar 865, Apr 1,403, May 3,079, Jun 577, Jul 3,624, Aug 510, Sep 4,650, Oct 1,093, Nov 270, Dec 2,937010k20k30k533Jan24KFeb865Mar1,403Apr3,079May577Jun3,624Jul510Aug4,650Sep1,093Oct270Nov2,937Dec
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Customer-hours; February was the worst month.

Adams County year over year

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Adams County, WA: average hours without power per customer by year2015: 1.0h; 2016: 1.5h; 2017: 1.3h; 2018: no data; 2019: 0.8h, coverage 86%; 2020: 2.9h, coverage 87%; 2021: 1.4h, coverage 87%; 2022: 1.3h, coverage 87%; 2023: 1.5h; 2024: 0.8h; 2025: 1.6h01230%50%100%1.0h20151.5h20161.3h2017n/a20180.8h20192.9h20201.4h20211.3h20221.5h20230.8h20241.6h2025
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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 Adams County, 2020

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
1February 23, 2020 19:00February 24, 2020 23:151d 4h1,46223K
2December 25, 2020 07:00December 28, 2020 17:303d 10h920793
3July 9, 2020 09:00July 9, 2020 17:158h 15m5682,384
4May 6, 2020 15:15May 7, 2020 00:309h 15m431690
5September 19, 2020 12:00September 19, 2020 16:004h384405
6September 7, 2020 16:45September 8, 2020 20:451d 4h3601,445
7September 24, 2020 14:30September 24, 2020 23:459h 15m25183
8February 1, 2020 18:00February 2, 2020 05:0011h237353
9October 13, 2020 21:45October 14, 2020 08:1510h 30m212285
10May 30, 2020 13:45May 30, 2020 23:309h 45m208718

Outage episodes by size in 2020: 14 reached 100+ customers, 1 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 Adams County reported on EIA Form 861 for 2020, or their most recent earlier filing. Utility-wide figures, not county-specific.

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UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
Avista Corp20205.1 hrs1.562.2 hrs0.91
Inland Power & Light Company202013.3 hrs1.973.9 hrs1.31
Bonneville Power Administration-----
Avista Corp,avista-----
Big Bend Electric Coop, Inc-----
PUD No 2 of Grant 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 2020; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 14,910 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. Adams County has data for 2015–2017, 2019–2025.

Cite this report

MassOutage (massoutage.com), Adams County, WA annual power outage report, 2020, 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/2020/washington/adams-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON