massoutage

County annual report · FIPS 38001

2021 Adams County, ND Power Outage Report

In 2021, customers in Adams County, ND went without power for an average of 0.0 hours, a total of 58 customer-hours (North Dakota average 1.0 hours). That ranks 51st worst of 51 North Dakota counties and 2943rd of 2,974 nationally.

Summary data CSVJSON
Avg hrs / customer
0.0
1,902 customers
Customer-hours out
58
Peak customers out
52
Outages ≥1,000 out
0
0 of 10,000+ · 5 total
Longest outage
2h 15m
began August 31, 2021
Rank in state
51st/51
2943rd of 2,974 US

Compared with ND, the US and 2020

Adams County, ND average hours without power per customer compared with state and national averages, 2021Adams County 0.0 hours, North Dakota average 1.0 hours, US average 8.9 hours, Adams County, 2020 0.3 hoursAdams CountyAdams County0.0hNorth Dakota averageNorth Dakota average1.0hUS averageUS average8.9hAdams County, 2020Adams County, 20200.3h
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Average hours without power per customer in 2021; last bar is this county in 2020.

Month by month

CSVJSON
Adams County, ND customer-hours without power by month, 2021Jan 0, Feb 0, Mar 0, Apr 0, May 0, Jun 28, Jul 0, Aug 24, Sep 0, Oct 2, Nov 0, Dec 401020300Jan0Feb0Mar0Apr0May28Jun0Jul24Aug0Sep2Oct0Nov4Dec
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Customer-hours; June was the worst month.

Adams County year over year

CSVJSON
Adams County, ND: average hours without power per customer by year2015: no data; 2016: no data; 2017: 0.9h; 2018: 0.5h, coverage 51%; 2019: 0.2h, coverage 53%; 2020: 0.3h, coverage 66%; 2021: 0.0h, coverage 66%; 2022: 2.7h, coverage 66%; 2023: 0.0h; 2024: 1.1h; 2025: 0.8h01230%50%100%n/a2015n/a20160.9h20170.5h20180.2h20190.3h20200.0h20212.7h20220.0h20231.1h20240.8h2025
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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 North Dakota customers tracked each year.

Biggest outages in Adams County, 2021

The 5 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1August 26, 2021 08:15August 26, 2021 08:3015m5213
2June 30, 2021 21:15June 30, 2021 23:152h1428
3October 15, 2021 20:15October 15, 2021 20:3015m82
4December 30, 2021 19:15December 30, 2021 19:4530m84
5August 31, 2021 03:15August 31, 2021 05:302h 15m511

Outage episodes by size in 2021: 0 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 Adams 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
Montana-Dakota Utilities Co-----
Slope Electric Coop Inc-----

About this data

  • Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 66% of North Dakota's customers in 2021; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 1,902 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 2017–2025.

Cite this report

MassOutage (massoutage.com), Adams County, ND 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/north-dakota/adams-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON
Adams County by year:20252024202320222020201920182017
Live outages in Adams County2021 North Dakota report2021 US report