County annual report · FIPS 46061
2023 Hanson County, SD Power Outage Report
In 2023, customers in Hanson County, SD went without power for an average of 3.5 hours, a total of 6,851 customer-hours (South Dakota average 2.3 hours). That ranks 17th worst of 61 South Dakota counties and 1787th of 2,977 nationally.
Compared with SD, the US and 2022
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Hanson County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | December 25, 2023 13:15 | December 25, 2023 17:15 | 4h | 747 | 2,428 |
| 2 | December 25, 2023 18:15 | December 25, 2023 21:00 | 2h 45m | 746 | 1,560 |
| 3 | January 6, 2023 18:00 | January 6, 2023 20:30 | 2h 30m | 739 | 1,199 |
| 4 | October 14, 2023 23:30 | October 15, 2023 01:30 | 2h | 93 | 186 |
| 5 | June 24, 2023 08:30 | June 24, 2023 18:00 | 9h 30m | 90 | 244 |
| 6 | March 1, 2023 10:45 | March 1, 2023 15:15 | 4h 30m | 82 | 369 |
| 7 | June 5, 2023 07:00 | June 5, 2023 09:45 | 2h 45m | 82 | 226 |
| 8 | August 8, 2023 20:15 | August 9, 2023 00:30 | 4h 15m | 54 | 80 |
| 9 | July 4, 2023 11:45 | July 4, 2023 13:15 | 1h 30m | 39 | 42 |
| 10 | July 26, 2023 03:30 | July 26, 2023 16:45 | 13h 15m | 26 | 160 |
Outage episodes by size in 2023: 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 2023, 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 | 2023 | 1.7 hrs | 0.86 | 74 min | 0.77 |
| NorthWestern Energy - (SD) | 2023 | 1.9 hrs | 1.37 | 74 min | 1.03 |
| 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 2023; 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, 2023, 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/2023/south-dakota/hanson-county