County annual report · FIPS 46045
2017 Edmunds County, SD Power Outage Report
In 2017, customers in Edmunds County, SD went without power for an average of 1.3 hours, a total of 2,912 customer-hours (South Dakota average 0.8 hours). That ranks 8th worst of 26 South Dakota counties and 1898th of 2,786 nationally.
Compared with SD, the US
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Edmunds County, 2017
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 4, 2017 13:15 | June 4, 2017 17:15 | 4h | 549 | 669 |
| 2 | May 13, 2017 17:30 | May 13, 2017 18:45 | 1h 15m | 522 | 543 |
| 3 | June 13, 2017 07:45 | June 13, 2017 08:00 | 15m | 311 | 78 |
| 4 | February 2, 2017 21:15 | February 2, 2017 21:45 | 30m | 305 | 153 |
| 5 | September 27, 2017 23:00 | September 27, 2017 23:15 | 15m | 141 | 35 |
| 6 | September 13, 2017 23:00 | September 14, 2017 00:15 | 1h 15m | 82 | 103 |
| 7 | May 2, 2017 21:45 | May 2, 2017 22:30 | 45m | 43 | 32 |
| 8 | July 18, 2017 10:45 | July 18, 2017 13:00 | 2h 15m | 10 | 23 |
| 9 | May 13, 2017 04:30 | May 13, 2017 09:15 | 4h 45m | 9 | 32 |
| 10 | July 7, 2017 11:30 | July 13, 2017 16:00 | 6d 4h | 9 | 463 |
Outage episodes by size in 2017: 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 2017, 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) | 2017 | 1.8 hrs | 1.41 | 84 min | 1.24 |
| Northern Electric Coop, Inc | 2017 | 2.4 hrs | 1.38 | 2.4 hrs | 1.38 |
| FEM Electric Assn, Inc | 2017 | 2.8 hrs | 1.75 | 2.8 hrs | 1.75 |
| 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 n/a of South Dakota's customers in 2017; 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, 2017, 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/2017/south-dakota/edmunds-county