County annual report · FIPS 46023
2022 Charles Mix County, SD Power Outage Report
In 2022, customers in Charles Mix County, SD went without power for an average of 0.8 hours, a total of 3,765 customer-hours (South Dakota average 6.9 hours). That ranks 59th worst of 63 South Dakota counties and 2771st of 2,976 nationally.
Compared with SD, the US and 2021
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Charles Mix County, 2022
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 12, 2022 21:30 | May 13, 2022 21:15 | 23h 45m | 796 | 666 |
| 2 | September 14, 2022 05:30 | September 14, 2022 06:30 | 1h | 481 | 481 |
| 3 | April 23, 2022 02:00 | April 23, 2022 03:00 | 1h | 298 | 298 |
| 4 | August 4, 2022 21:15 | August 5, 2022 00:15 | 3h | 298 | 894 |
| 5 | April 29, 2022 17:45 | April 29, 2022 19:30 | 1h 45m | 216 | 378 |
| 6 | September 14, 2022 07:45 | September 14, 2022 08:00 | 15m | 199 | 50 |
| 7 | September 14, 2022 13:45 | September 14, 2022 17:00 | 3h 15m | 195 | 254 |
| 8 | August 10, 2022 09:00 | August 10, 2022 12:45 | 3h 45m | 63 | 236 |
| 9 | July 5, 2022 20:30 | July 6, 2022 03:45 | 7h 15m | 59 | 190 |
| 10 | September 21, 2022 18:00 | September 21, 2022 20:30 | 2h 30m | 17 | 33 |
Outage episodes by size in 2022: 7 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 Charles Mix County reported on EIA Form 861 for 2022, 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) | 2022 | 2.1 hrs | 1.26 | 80 min | 1.01 |
| 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 89% of South Dakota's customers in 2022; 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, 2022, 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/2022/south-dakota/charles-mix-county