County annual report · FIPS 46111
2015 Sanborn County, SD Power Outage Report
In 2015, customers in Sanborn County, SD went without power for an average of 0.2 hours, a total of 269 customer-hours (South Dakota average 0.7 hours). That ranks 8th worst of 10 South Dakota counties and 2271st of 2,484 nationally.
Compared with SD, the US
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Sanborn County, 2015
The 7 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 20, 2015 08:00 | June 20, 2015 09:45 | 1h 45m | 177 | 156 |
| 2 | June 10, 2015 21:15 | June 10, 2015 22:00 | 45m | 149 | 95 |
| 3 | July 7, 2015 16:15 | July 7, 2015 17:15 | 1h | 10 | 5 |
| 4 | July 22, 2015 16:15 | July 22, 2015 17:30 | 1h 15m | 5 | 6 |
| 5 | July 22, 2015 18:45 | July 22, 2015 19:00 | 15m | 3 | 1 |
| 6 | May 27, 2015 13:15 | May 27, 2015 14:45 | 1h 30m | 2 | 3 |
| 7 | June 20, 2015 20:15 | June 20, 2015 23:15 | 3h | 1 | 3 |
Outage episodes by size in 2015: 2 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 2015, 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 | 2015 | 2.1 hrs | 0.88 | 82 min | 0.81 |
| NorthWestern Energy - (SD) | 2015 | 1.7 hrs | 1.07 | 1.6 hrs | 0.95 |
| 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 2015; 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, 2015, 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/2015/south-dakota/sanborn-county