County annual report · FIPS 46061
2019 Hanson County, SD Power Outage Report
In 2019, customers in Hanson County, SD went without power for an average of 13.6 hours, a total of 27K customer-hours (South Dakota average 3.8 hours). That ranks 5th worst of 58 South Dakota counties and 382nd 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 Hanson 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 | July 20, 2019 12:30 | July 23, 2019 22:15 | 3d 9h | 824 | 12K |
| 2 | April 11, 2019 01:00 | April 12, 2019 00:15 | 23h 15m | 722 | 12K |
| 3 | November 20, 2019 16:45 | November 20, 2019 17:15 | 30m | 116 | 58 |
| 4 | November 30, 2019 07:45 | November 30, 2019 11:15 | 3h 30m | 74 | 227 |
| 5 | August 1, 2019 14:45 | August 1, 2019 18:00 | 3h 15m | 58 | 137 |
| 6 | August 27, 2019 16:00 | August 27, 2019 20:45 | 4h 45m | 49 | 86 |
| 7 | July 5, 2019 13:45 | July 5, 2019 17:15 | 3h 30m | 48 | 102 |
| 8 | August 24, 2019 14:00 | August 24, 2019 19:15 | 5h 15m | 35 | 184 |
| 9 | August 17, 2019 14:00 | August 17, 2019 19:45 | 5h 45m | 33 | 190 |
| 10 | August 5, 2019 14:30 | August 5, 2019 22:00 | 7h 30m | 25 | 68 |
Outage episodes by size in 2019: 3 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 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 |
|---|---|---|---|---|---|
| Northern States Power Co - Minnesota | 2018 | 90 min | 0.73 | 69 min | 0.62 |
| NorthWestern Energy - (SD) | 2018 | 1.9 hrs | 1.24 | 1.6 hrs | 1.13 |
| 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 87% of South Dakota's customers in 2019; 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, 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/hanson-county