County annual report · FIPS 46061
2024 Hanson County, SD Power Outage Report
In 2024, customers in Hanson County, SD went without power for an average of 3.8 hours, a total of 7,442 customer-hours (South Dakota average 2.3 hours). That ranks 15th worst of 65 South Dakota counties and 1895th 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 Hanson 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 | September 21, 2024 17:00 | September 21, 2024 20:15 | 3h 15m | 749 | 1,624 |
| 2 | September 21, 2024 21:30 | September 21, 2024 23:00 | 1h 30m | 749 | 875 |
| 3 | June 17, 2024 17:30 | June 18, 2024 00:45 | 7h 15m | 746 | 1,870 |
| 4 | September 1, 2024 16:30 | September 1, 2024 18:30 | 2h | 33 | 55 |
| 5 | September 1, 2024 23:30 | September 2, 2024 02:00 | 2h 30m | 33 | 69 |
| 6 | July 3, 2024 05:45 | July 3, 2024 08:45 | 3h | 28 | 83 |
| 7 | May 11, 2024 18:30 | May 11, 2024 20:15 | 1h 45m | 26 | 29 |
| 8 | April 19, 2024 20:30 | April 22, 2024 14:45 | 2d 18h | 25 | 1,650 |
| 9 | November 10, 2024 02:30 | November 10, 2024 05:15 | 2h 45m | 24 | 66 |
| 10 | January 1, 2024 16:45 | January 1, 2024 19:30 | 2h 45m | 21 | 38 |
Outage episodes by size in 2024: 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 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 |
|---|---|---|---|---|---|
| Northern States Power Co - Minnesota | 2024 | 2.6 hrs | 0.99 | 76 min | 0.80 |
| NorthWestern Energy - (SD) | 2024 | 76 min | 0.70 | 66 min | 0.65 |
| 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 2024; 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, 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/hanson-county