County annual report · FIPS 46045
2019 Edmunds County, SD Power Outage Report
In 2019, customers in Edmunds County, SD went without power for an average of 0.7 hours, a total of 1,426 customer-hours (South Dakota average 3.8 hours). That ranks 36th worst of 58 South Dakota counties and 2628th of 2,945 nationally.
Compared with SD, the US and 2018
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Edmunds County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | May 16, 2019 00:15 | May 16, 2019 02:15 | 2h | 306 | 602 |
| 2 | May 16, 2019 20:00 | May 16, 2019 21:00 | 1h | 217 | 215 |
| 3 | November 30, 2019 20:00 | November 30, 2019 23:30 | 3h 30m | 173 | 367 |
| 4 | August 26, 2019 12:45 | August 26, 2019 13:00 | 15m | 136 | 34 |
| 5 | December 2, 2019 15:00 | December 2, 2019 15:15 | 15m | 134 | 34 |
| 6 | April 12, 2019 18:45 | April 12, 2019 19:15 | 30m | 73 | 34 |
| 7 | May 20, 2019 08:00 | May 20, 2019 13:15 | 5h 15m | 32 | 112 |
| 8 | October 17, 2019 23:30 | October 17, 2019 23:45 | 15m | 32 | 8 |
| 9 | July 10, 2019 19:15 | July 10, 2019 21:00 | 1h 45m | 10 | 12 |
| 10 | May 15, 2019 20:30 | May 15, 2019 21:00 | 30m | 7 | 4 |
Outage episodes by size in 2019: 5 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 2019, 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) | 2018 | 1.9 hrs | 1.24 | 1.6 hrs | 1.13 |
| Northern Electric Coop, Inc | 2018 | 3.3 hrs | 1.45 | 70 min | 1.25 |
| 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 87% of South Dakota's customers in 2019; 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, 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/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2019/south-dakota/edmunds-county