County annual report · FIPS 46111
2023 Sanborn County, SD Power Outage Report
In 2023, customers in Sanborn County, SD went without power for an average of 7.0 hours, a total of 10K customer-hours (South Dakota average 2.3 hours). That ranks 8th worst of 61 South Dakota counties and 1135th 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 Sanborn 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 | November 15, 2023 17:15 | November 16, 2023 00:45 | 7h 30m | 682 | 1,191 |
| 2 | December 13, 2023 12:00 | December 13, 2023 13:30 | 1h 30m | 558 | 837 |
| 3 | January 19, 2023 08:15 | January 19, 2023 10:45 | 2h 30m | 555 | 1,128 |
| 4 | April 19, 2023 07:00 | April 19, 2023 09:45 | 2h 45m | 378 | 632 |
| 5 | April 5, 2023 02:15 | April 5, 2023 11:15 | 9h | 239 | 1,619 |
| 6 | November 14, 2023 14:45 | November 14, 2023 21:30 | 6h 45m | 197 | 1,196 |
| 7 | July 26, 2023 03:30 | July 26, 2023 16:00 | 12h 30m | 196 | 1,374 |
| 8 | April 5, 2023 13:15 | April 5, 2023 16:45 | 3h 30m | 193 | 185 |
| 9 | February 26, 2023 19:30 | February 26, 2023 22:45 | 3h 15m | 192 | 379 |
| 10 | August 8, 2023 21:45 | August 8, 2023 23:15 | 1h 30m | 191 | 287 |
Outage episodes by size in 2023: 11 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 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 | - | - | - | - | - |
| 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 2023; 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, 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/sanborn-county