County annual report · FIPS 46045
2020 Edmunds County, SD Power Outage Report
In 2020, customers in Edmunds County, SD went without power for an average of 0.2 hours, a total of 418 customer-hours (South Dakota average 4.6 hours). That ranks 59th worst of 62 South Dakota counties and 2906th of 3,019 nationally.
Compared with SD, the US and 2019
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Edmunds County, 2020
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | July 7, 2020 06:30 | July 7, 2020 07:00 | 30m | 295 | 148 |
| 2 | July 18, 2020 09:00 | July 18, 2020 09:15 | 15m | 101 | 25 |
| 3 | July 21, 2020 19:45 | July 21, 2020 21:30 | 1h 45m | 83 | 51 |
| 4 | July 28, 2020 04:45 | July 28, 2020 05:45 | 1h | 75 | 75 |
| 5 | December 23, 2020 18:30 | December 23, 2020 18:45 | 15m | 22 | 6 |
| 6 | November 23, 2020 18:45 | November 23, 2020 20:00 | 1h 15m | 12 | 15 |
| 7 | August 1, 2020 14:00 | August 1, 2020 15:30 | 1h 30m | 11 | 17 |
| 8 | November 8, 2020 17:00 | November 8, 2020 19:00 | 2h | 11 | 22 |
| 9 | June 8, 2020 04:30 | June 8, 2020 04:45 | 15m | 10 | 3 |
| 10 | July 5, 2020 01:15 | July 5, 2020 03:30 | 2h 15m | 9 | 20 |
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 Edmunds County reported on EIA Form 861 for 2020, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| NorthWestern Energy - (SD) | 2020 | 2.6 hrs | 1.54 | 1.9 hrs | 1.28 |
| Northern Electric Coop, Inc | 2020 | 1.7 hrs | 0.62 | 1.6 hrs | 0.56 |
| FEM Electric Assn, Inc | 2018 | 3.8 hrs | 2.21 | 3.8 hrs | 2.21 |
| Montana-Dakota Utilities Co | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 79% of South Dakota's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 2,191 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. Edmunds County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Edmunds County, SD 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/south-dakota/edmunds-county