County annual report · FIPS 46111
2024 Sanborn County, SD Power Outage Report
In 2024, customers in Sanborn County, SD went without power for an average of 1.4 hours, a total of 2,075 customer-hours (South Dakota average 2.3 hours). That ranks 37th worst of 65 South Dakota counties and 2589th 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 Sanborn 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 | May 21, 2024 14:15 | May 21, 2024 15:15 | 1h | 195 | 159 |
| 2 | June 17, 2024 12:15 | June 17, 2024 17:45 | 5h 30m | 195 | 499 |
| 3 | June 18, 2024 16:30 | June 18, 2024 18:30 | 2h | 195 | 390 |
| 4 | December 26, 2024 09:00 | December 26, 2024 09:15 | 15m | 194 | 49 |
| 5 | June 22, 2024 03:00 | June 22, 2024 04:30 | 1h 30m | 184 | 276 |
| 6 | June 17, 2024 19:30 | June 17, 2024 23:30 | 4h | 49 | 156 |
| 7 | March 3, 2024 18:15 | March 3, 2024 20:30 | 2h 15m | 35 | 71 |
| 8 | January 25, 2024 22:00 | January 25, 2024 23:15 | 1h 15m | 27 | 27 |
| 9 | February 27, 2024 13:00 | February 27, 2024 15:30 | 2h 30m | 26 | 48 |
| 10 | May 12, 2024 16:15 | May 12, 2024 17:45 | 1h 30m | 26 | 33 |
Outage episodes by size in 2024: 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 Sanborn 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 | - | - | - | - | - |
| Dakota Energy Coop Inc | - | - | - | - | - |
| 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 ÷ 1,463 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. Sanborn County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Sanborn 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/sanborn-county