massoutage

County annual report · FIPS 38085

2019 Sioux County, ND Power Outage Report

In 2019, customers in Sioux County, ND went without power for an average of 0.0 hours, a total of 113 customer-hours (North Dakota average 1.1 hours). That ranks 34th worst of 35 North Dakota counties and 2851st of 2,945 nationally.

Summary data CSVJSON
Avg hrs / customer
0.0
2,559 customers
Customer-hours out
113
Peak customers out
92
Outages ≥1,000 out
0
0 of 10,000+ · 2 total
Longest outage
4h
began November 30, 2019
Rank in state
34th/35
2851st of 2,945 US

Compared with ND, the US

Sioux County, ND average hours without power per customer compared with state and national averages, 2019Sioux County 0.0 hours, North Dakota average 1.1 hours, US average 4.7 hoursSioux CountySioux County0.0hNorth Dakota averageNorth Dakota average1.1hUS averageUS average4.7h
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Average hours without power per customer in 2019.

Month by month

CSVJSON
Sioux County, ND customer-hours without power by month, 2019Jan 0, Feb 0, Mar 0, Apr 0, May 0, Jun 69, Jul 0, Aug 0, Sep 0, Oct 0, Nov 44, Dec 00204060800Jan0Feb0Mar0Apr0May69Jun0Jul0Aug0Sep0Oct44Nov0Dec
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Customer-hours; June was the worst month.

Sioux County year over year

CSVJSON
Sioux County, ND: average hours without power per customer by year2015: no data; 2016: no data; 2017: no data; 2018: no data; 2019: 0.0h, coverage 53%; 2020: 0.3h, coverage 66%; 2021: 0.3h, coverage 66%; 2022: 0.1h, coverage 66%; 2023: 0.2h; 2024: no data; 2025: 0.0h00.10.20.30.40%50%100%n/a2015n/a2016n/a2017n/a20180.0h20190.3h20200.3h20210.1h20220.2h2023n/a20240.0h2025
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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 Sioux County, 2019

The 2 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1June 28, 2019 13:30June 28, 2019 14:1545m9269
2November 30, 2019 18:30November 30, 2019 22:304h1144

Outage episodes by size in 2019: 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 Sioux County reported on EIA Form 861 for 2019, 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-----
Mor-Gran-Sou 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 53% of North Dakota's customers in 2019; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 2,559 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. Sioux County has data for 2019–2023, 2025.

Cite this report

MassOutage (massoutage.com), Sioux County, ND annual power outage report, 2019, 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/2019/north-dakota/sioux-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON
Sioux County by year:20252023202220212020
Live outages in Sioux County2019 North Dakota report2019 US report