County annual report · FIPS 46087
2024 McCook County, SD Power Outage Report
In 2024, customers in McCook County, SD went without power for an average of 3.2 hours, a total of 9,889 customer-hours (South Dakota average 2.3 hours). That ranks 21st worst of 65 South Dakota counties and 2041st 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 McCook 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 19, 2024 20:45 | May 22, 2024 16:00 | 2d 19h | 1,234 | 1,488 |
| 2 | December 19, 2024 10:15 | January 1, 2025 00:00 | 12d 13h | 1,183 | 1,115 |
| 3 | August 24, 2024 19:15 | August 28, 2024 13:00 | 3d 17h | 524 | 475 |
| 4 | July 3, 2024 03:45 | July 5, 2024 15:00 | 2d 11h | 222 | 183 |
| 5 | June 16, 2024 22:30 | June 17, 2024 04:15 | 5h 45m | 128 | 219 |
| 6 | October 24, 2024 16:45 | October 24, 2024 17:45 | 1h | 95 | 72 |
| 7 | October 27, 2024 15:00 | October 27, 2024 15:30 | 30m | 95 | 48 |
| 8 | October 7, 2024 17:30 | October 11, 2024 13:00 | 3d 19h | 38 | 235 |
| 9 | March 12, 2024 18:30 | March 15, 2024 20:45 | 3d 2h | 24 | 187 |
| 10 | July 9, 2024 04:15 | July 12, 2024 20:30 | 3d 16h | 23 | 385 |
Outage episodes by size in 2024: 5 reached 100+ customers, 2 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 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 |
| Sioux Valley SW Elec Coop | 2024 | 46 min | 0.92 | 46 min | 0.92 |
| 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 n/a of South Dakota's customers in 2024; 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, 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/mccook-county