County annual report · FIPS 46061
2017 Hanson County, SD Power Outage Report
In 2017, customers in Hanson County, SD went without power for an average of 1.4 hours, a total of 2,743 customer-hours (South Dakota average 0.8 hours). That ranks 6th worst of 26 South Dakota counties and 1866th of 2,786 nationally.
Compared with SD, the US and 2016
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Hanson 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 | July 18, 2017 07:45 | July 18, 2017 11:30 | 3h 45m | 716 | 2,506 |
| 2 | November 1, 2017 21:15 | November 1, 2017 23:45 | 2h 30m | 40 | 83 |
| 3 | October 24, 2017 07:00 | October 24, 2017 10:30 | 3h 30m | 15 | 35 |
| 4 | June 27, 2017 23:00 | June 28, 2017 01:00 | 2h | 14 | 23 |
| 5 | October 29, 2017 15:15 | October 29, 2017 21:00 | 5h 45m | 7 | 40 |
| 6 | October 3, 2017 13:15 | October 3, 2017 16:15 | 3h | 6 | 5 |
| 7 | October 26, 2017 21:00 | October 27, 2017 00:00 | 3h | 6 | 18 |
| 8 | October 2, 2017 15:45 | October 2, 2017 17:00 | 1h 15m | 5 | 2 |
| 9 | May 1, 2017 19:15 | May 1, 2017 22:00 | 2h 45m | 1 | 3 |
| 10 | May 5, 2017 04:30 | May 5, 2017 10:15 | 5h 45m | 1 | 6 |
Outage episodes by size in 2017: 1 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 Hanson 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 |
|---|---|---|---|---|---|
| Northern States Power Co - Minnesota | 2017 | 1.6 hrs | 0.73 | 58 min | 0.61 |
| NorthWestern Energy - (SD) | 2017 | 1.8 hrs | 1.41 | 84 min | 1.24 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Southeastern Electric Coop Inc - (SD) | - | - | - | - | - |
| Central Electric Coop, Inc - (SD) | - | - | - | - | - |
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 ÷ 1,960 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. Hanson County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Hanson 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/hanson-county