County annual report · FIPS 46045
2024 Edmunds County, SD Power Outage Report
In 2024, customers in Edmunds County, SD went without power for an average of 0.4 hours, a total of 851 customer-hours (South Dakota average 2.3 hours). That ranks 60th worst of 65 South Dakota counties and 2867th of 2,990 nationally.
Compared with SD, the US and 2023
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Edmunds County, 2024
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 29, 2024 01:15 | August 29, 2024 02:00 | 45m | 534 | 398 |
| 2 | June 24, 2024 02:30 | June 24, 2024 03:00 | 30m | 135 | 68 |
| 3 | July 15, 2024 19:30 | July 15, 2024 20:00 | 30m | 74 | 37 |
| 4 | May 22, 2024 05:45 | May 22, 2024 09:15 | 3h 30m | 57 | 200 |
| 5 | August 22, 2024 15:30 | August 22, 2024 19:15 | 3h 45m | 14 | 40 |
| 6 | June 18, 2024 06:45 | June 18, 2024 10:30 | 3h 45m | 11 | 41 |
| 7 | October 2, 2024 14:15 | October 2, 2024 17:00 | 2h 45m | 11 | 24 |
| 8 | August 12, 2024 23:30 | August 12, 2024 23:45 | 15m | 10 | 3 |
| 9 | October 3, 2024 18:30 | October 3, 2024 19:15 | 45m | 10 | 8 |
| 10 | March 26, 2024 15:15 | March 26, 2024 16:00 | 45m | 7 | 5 |
Outage episodes by size in 2024: 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 2024, 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 |
|---|---|---|---|---|---|
| Montana-Dakota Utilities Co | 2024 | 2.9 hrs | 1.26 | 2.1 hrs | 1.10 |
| NorthWestern Energy - (SD) | 2024 | 76 min | 0.70 | 66 min | 0.65 |
| Northern Electric Coop, Inc | 2024 | 50 min | 0.67 | 50 min | 0.67 |
| FEM Electric Assn, Inc | 2018 | 3.8 hrs | 2.21 | 3.8 hrs | 2.21 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of South Dakota's customers in 2024; 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, 2024, 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/2024/south-dakota/edmunds-county