County annual report · FIPS 46111
2019 Sanborn County, SD Power Outage Report
In 2019, customers in Sanborn County, SD went without power for an average of 2.9 hours, a total of 4,209 customer-hours (South Dakota average 3.8 hours). That ranks 17th worst of 58 South Dakota counties and 1699th 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 Sanborn 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 | September 12, 2019 15:15 | September 13, 2019 01:30 | 10h 15m | 194 | 1,260 |
| 2 | September 11, 2019 04:15 | September 11, 2019 06:15 | 2h | 193 | 386 |
| 3 | September 13, 2019 14:15 | September 13, 2019 14:30 | 15m | 193 | 48 |
| 4 | March 22, 2019 00:45 | March 22, 2019 06:45 | 6h | 81 | 307 |
| 5 | July 20, 2019 11:45 | July 21, 2019 19:45 | 1d 8h | 76 | 1,095 |
| 6 | September 18, 2019 16:45 | September 18, 2019 18:15 | 1h 30m | 75 | 105 |
| 7 | September 23, 2019 01:30 | September 23, 2019 06:00 | 4h 30m | 69 | 311 |
| 8 | October 16, 2019 15:15 | October 16, 2019 16:15 | 1h | 38 | 38 |
| 9 | August 18, 2019 01:45 | August 18, 2019 09:00 | 7h 15m | 34 | 140 |
| 10 | October 5, 2019 06:30 | October 5, 2019 08:45 | 2h 15m | 28 | 33 |
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 Sanborn 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 | - | - | - | - | - |
| 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 87% of South Dakota's customers in 2019; 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, 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/sanborn-county