massoutage

County annual report · FIPS 53065

2020 Stevens County, WA Power Outage Report

In 2020, customers in Stevens County, WA went without power for an average of 16.1 hours, a total of 494K customer-hours (Washington average 4.2 hours). That ranks 6th worst of 37 Washington counties and 520th of 3,019 nationally.

Summary data CSVJSON
Avg hrs / customer
16.1
30,671 customers
Customer-hours out
494K
Peak customers out
6,478
Outages ≥1,000 out
10
0 of 10,000+ · 731 total
Longest outage
11d 7h
began September 7, 2020
Rank in state
6th/37
520th of 3,019 US

Compared with WA, the US and 2019

Stevens County, WA average hours without power per customer compared with state and national averages, 2020Stevens County 16.1 hours, Washington average 4.2 hours, US average 8.7 hours, Stevens County, 2019 6.2 hoursStevens CountyStevens County16.1hWashington averageWashington average4.2hUS averageUS average8.7hStevens County, 2019Stevens County, 20196.2h
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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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Stevens County, WA customer-hours without power by month, 2020Jan 95K, Feb 18K, Mar 7,459, Apr 6,049, May 19K, Jun 12K, Jul 13K, Aug 13K, Sep 208K, Oct 30K, Nov 62K, Dec 9,3280100k200k300k95KJan18KFeb7,459Mar6,049Apr19KMay12KJun13KJul13KAug208KSep30KOct62KNov9,328Dec
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Customer-hours; September was the worst month.

Stevens County year over year

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Stevens County, WA: average hours without power per customer by year2015: 14.7h; 2016: 5.5h; 2017: 8.2h; 2018: 8.6h, coverage 71%; 2019: 6.2h, coverage 86%; 2020: 16.1h, coverage 87%; 2021: 13.4h, coverage 87%; 2022: 11.4h, coverage 87%; 2023: 6.4h; 2024: 9.2h; 2025: 12.7h051015200%50%100%14.7h20155.5h20168.2h20178.6h20186.2h201916.1h202013.4h202111.4h20226.4h20239.2h202412.7h2025
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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 Stevens County, 2020

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

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1September 7, 2020 14:00September 18, 2020 21:0011d 7h6,478200K
2November 13, 2020 13:15November 15, 2020 22:002d 8h4,12360K
3January 12, 2020 19:00January 17, 2020 17:304d 22h3,70261K
4January 18, 2020 16:00January 21, 2020 04:002d 12h3,49516K
5October 13, 2020 16:15October 14, 2020 10:0017h 45m2,42511K
6May 31, 2020 02:45June 1, 2020 05:301d 2h1,7148,209
7June 11, 2020 10:00June 11, 2020 11:451h 45m1,6601,782
8January 11, 2020 12:15January 12, 2020 11:4523h 30m1,5349,039
9January 31, 2020 20:00February 2, 2020 23:002d 3h1,32715K
10December 13, 2020 04:00December 13, 2020 11:007h1,1213,031

Outage episodes by size in 2020: 89 reached 100+ customers, 10 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 Stevens County reported on EIA Form 861 for 2020, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
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-----
City of Chewelah-----

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 ÷ 30,671 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. Stevens County has data for 2015–2025.

Cite this report

MassOutage (massoutage.com), Stevens 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/stevens-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON