massoutage

County annual report · FIPS 30019

2020 Daniels County, MT Power Outage Report

In 2020, customers in Daniels County, MT went without power for an average of 4.1 hours, a total of 1,747 customer-hours (Montana average 5.6 hours). That ranks 30th worst of 50 Montana counties and 1591st of 3,019 nationally.

Summary data CSVJSON
Avg hrs / customer
4.1
429 customers
Customer-hours out
1,747
Peak customers out
688
Outages ≥1,000 out
0
0 of 10,000+ · 4 total
Longest outage
2h 15m
began July 24, 2020
Rank in state
30th/50
1591st of 3,019 US

Compared with MT, the US and 2019

Daniels County, MT average hours without power per customer compared with state and national averages, 2020Daniels County 4.1 hours, Montana average 5.6 hours, US average 8.7 hours, Daniels County, 2019 3.4 hoursDaniels CountyDaniels County4.1hMontana averageMontana average5.6hUS averageUS average8.7hDaniels County, 2019Daniels County, 20193.4h
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Average hours without power per customer in 2020; last bar is this county in 2019.

Month by month

CSVJSON
Daniels County, MT customer-hours without power by month, 2020Jan 0, Feb 0, Mar 0, Apr 0, May 0, Jun 505, Jul 1,121, Aug 121, Sep 0, Oct 0, Nov 0, Dec 005001k1.5k0Jan0Feb0Mar0Apr0May505Jun1,121Jul121Aug0Sep0Oct0Nov0Dec
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Customer-hours; July was the worst month.

Daniels County year over year

CSVJSON
Daniels County, MT: average hours without power per customer by year2015: no data; 2016: no data; 2017: 2.2h; 2018: 3.6h, coverage 16%; 2019: 3.4h, coverage 75%; 2020: 4.1h, coverage 76%; 2021: 1.7h, coverage 76%; 2022: 10.3h, coverage 76%; 2023: 0.1h; 2024: 1.2h; 2025: 4.1h0510150%50%100%n/a2015n/a20162.2h20173.6h20183.4h20194.1h20201.7h202110.3h20220.1h20231.2h20244.1h2025
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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 Montana customers tracked each year.

Biggest outages in Daniels County, 2020

The 4 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1July 24, 2020 01:15July 24, 2020 03:302h 15m6881,121
2June 11, 2020 01:30June 11, 2020 02:1545m671503
3August 27, 2020 22:45August 28, 2020 00:452h67121
4June 16, 2020 09:45June 16, 2020 10:0015m51

Outage episodes by size in 2020: 2 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 Daniels 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
Montana-Dakota Utilities Co-----
Sheridan Electric Coop, Inc-----
NorVal Electric Cooperative, 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 76% of Montana's customers in 2020; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 429 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. Daniels County has data for 2017–2025.

Cite this report

MassOutage (massoutage.com), Daniels County, MT 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/). https://massoutage.com/reports/2020/montana/daniels-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON