County annual report · FIPS 46023
2024 Charles Mix County, SD Power Outage Report
In 2024, customers in Charles Mix County, SD went without power for an average of 3.6 hours, a total of 18K customer-hours (South Dakota average 2.3 hours). That ranks 17th worst of 65 South Dakota counties and 1947th 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 Charles Mix 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 | July 30, 2024 02:15 | July 30, 2024 09:15 | 7h | 1,204 | 4,816 |
| 2 | March 25, 2024 17:30 | March 25, 2024 20:45 | 3h 15m | 1,201 | 1,689 |
| 3 | June 11, 2024 02:45 | June 11, 2024 07:30 | 4h 45m | 1,190 | 5,598 |
| 4 | July 22, 2024 00:15 | July 22, 2024 04:00 | 3h 45m | 518 | 1,560 |
| 5 | July 30, 2024 14:45 | July 30, 2024 20:45 | 6h | 276 | 694 |
| 6 | August 26, 2024 01:00 | August 26, 2024 06:30 | 5h 30m | 276 | 1,518 |
| 7 | July 11, 2024 15:45 | July 11, 2024 16:00 | 15m | 155 | 39 |
| 8 | June 17, 2024 05:15 | June 17, 2024 08:45 | 3h 30m | 60 | 210 |
| 9 | May 12, 2024 13:45 | May 12, 2024 18:30 | 4h 45m | 38 | 74 |
| 10 | August 30, 2024 13:15 | August 30, 2024 18:15 | 5h | 20 | 33 |
Outage episodes by size in 2024: 7 reached 100+ customers, 3 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 Charles Mix 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 |
|---|---|---|---|---|---|
| NorthWestern Energy - (SD) | 2024 | 76 min | 0.70 | 66 min | 0.65 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Douglas Electric Coop, Inc | - | - | - | - | - |
| Charles Mix Electric Assn, Inc | - | - | - | - | - |
| Town of Pickstown - (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 ÷ 4,915 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. Charles Mix County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Charles Mix 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/charles-mix-county