massoutage

County annual report · FIPS 46107

2018 Potter County, SD Power Outage Report

In 2018, customers in Potter County, SD went without power for an average of 0.0 hours, a total of 56 customer-hours (South Dakota average 1.1 hours). That ranks 26th worst of 30 South Dakota counties and 2699th of 2,798 nationally.

Summary data CSVJSON
Avg hrs / customer
0.0
1,138 customers
Customer-hours out
56
Peak customers out
13
Outages ≥1,000 out
0
0 of 10,000+ · 3 total
Longest outage
3h
began September 23, 2018
Rank in state
26th/30
2699th of 2,798 US

Compared with SD, the US and 2017

Potter County, SD average hours without power per customer compared with state and national averages, 2018Potter County 0.0 hours, South Dakota average 1.1 hours, US average 5.6 hours, Potter County, 2017 1.0 hoursPotter CountyPotter County0.0hSouth Dakota averageSouth Dakota average1.1hUS averageUS average5.6hPotter County, 2017Potter County, 20171.0h
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Average hours without power per customer in 2018; last bar is this county in 2017.

Month by month

CSVJSON
Potter County, SD customer-hours without power by month, 2018Jan 0, Feb 0, Mar 0, Apr 0, May 3, Jun 26, Jul 0, Aug 0, Sep 27, Oct 0, Nov 0, Dec 001020300Jan0Feb0Mar0Apr3May26Jun0Jul0Aug27Sep0Oct0Nov0Dec
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Customer-hours; September was the worst month.

Potter County year over year

CSVJSON
Potter County, SD: average hours without power per customer by year2015: no data; 2016: no data; 2017: 1.0h; 2018: 0.0h, coverage 46%; 2019: 0.8h, coverage 87%; 2020: 2.0h, coverage 79%; 2021: 2.6h, coverage 79%; 2022: 4.1h, coverage 89%; 2023: 1.8h; 2024: 0.5h; 2025: 2.5h02460%50%100%n/a2015n/a20161.0h20170.0h20180.8h20192.0h20202.6h20214.1h20221.8h20230.5h20242.5h2025
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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 South Dakota customers tracked each year.

Biggest outages in Potter County, 2018

The 3 outage episodes with the most customers out at once. Times are UTC.

CSVJSON
#Started (UTC)Ended (UTC)DurationPeak outCustomer-hours
1June 7, 2018 21:15June 7, 2018 23:152h1326
2September 23, 2018 15:45September 23, 2018 18:453h927
3May 31, 2018 15:15May 31, 2018 15:4530m53

Outage episodes by size in 2018: 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 Potter County reported on EIA Form 861 for 2018, or their most recent earlier filing. Utility-wide figures, not county-specific.

CSVJSON
UtilityEIA yearSAIDISAIFISAIDI excl. major eventsSAIFI excl. major events
WAPA-- Western Area Power Administration-----
Montana-Dakota Utilities Co-----
Cam Wal 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 46% of South Dakota's customers in 2018; utilities it does not see are not counted.
  • Hours per customer = outage customer-minutes ÷ 1,138 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. Potter County has data for 2017–2025.

Cite this report

MassOutage (massoutage.com), Potter County, SD annual power outage report, 2018, 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/2018/south-dakota/potter-county

summary CSVJSONyears CSVJSONmonths CSVJSONevents CSVJSONutilities CSVJSON
Potter County by year:20252024202320222021202020192017
Live outages in Potter County2018 South Dakota report2018 US report