County annual report · FIPS 46087
2019 McCook County, SD Power Outage Report
In 2019, customers in McCook County, SD went without power for an average of 19.1 hours, a total of 59K customer-hours (South Dakota average 3.8 hours). That ranks 3rd worst of 58 South Dakota counties and 227th 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 McCook 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 10, 2019 15:30 | October 4, 2019 20:45 | 24d 5h | 1,151 | 32K |
| 2 | July 19, 2019 20:00 | July 25, 2019 20:45 | 6d | 940 | 9,439 |
| 3 | April 11, 2019 01:45 | April 16, 2019 17:15 | 5d 15h | 631 | 9,778 |
| 4 | April 21, 2019 23:00 | April 22, 2019 01:30 | 2h 30m | 363 | 819 |
| 5 | May 11, 2019 08:30 | May 11, 2019 09:30 | 1h | 363 | 363 |
| 6 | August 10, 2019 22:45 | August 11, 2019 03:00 | 4h 15m | 130 | 37 |
| 7 | December 1, 2019 04:00 | December 1, 2019 07:45 | 3h 45m | 128 | 384 |
| 8 | August 18, 2019 02:30 | August 18, 2019 04:15 | 1h 45m | 118 | 154 |
| 9 | August 11, 2019 12:30 | August 11, 2019 14:15 | 1h 45m | 93 | 163 |
| 10 | August 12, 2019 23:15 | August 13, 2019 00:00 | 45m | 93 | 70 |
Outage episodes by size in 2019: 8 reached 100+ customers, 1 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 McCook 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 |
| Sioux Valley SW Elec Coop | 2018 | 4.0 hrs | 3.62 | 2.0 hrs | 2.88 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Southeastern 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 ÷ 3,102 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. McCook County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), McCook 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/mccook-county