County annual report · FIPS 46015
2022 Brule County, SD Power Outage Report
In 2022, customers in Brule County, SD went without power for an average of 2.7 hours, a total of 7,796 customer-hours (South Dakota average 6.9 hours). That ranks 40th worst of 63 South Dakota counties and 2029th 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 Brule 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 19:00 | May 12, 2022 23:45 | 4h 45m | 2,088 | 4,660 |
| 2 | August 9, 2022 21:00 | August 9, 2022 23:45 | 2h 45m | 473 | 1,183 |
| 3 | August 10, 2022 20:15 | August 11, 2022 03:00 | 6h 45m | 473 | 467 |
| 4 | April 18, 2022 19:15 | April 18, 2022 22:30 | 3h 15m | 225 | 283 |
| 5 | May 3, 2022 18:15 | May 3, 2022 20:15 | 2h | 82 | 119 |
| 6 | October 3, 2022 14:30 | October 3, 2022 16:45 | 2h 15m | 76 | 135 |
| 7 | December 13, 2022 21:15 | December 13, 2022 22:45 | 1h 30m | 43 | 16 |
| 8 | August 9, 2022 13:45 | August 9, 2022 18:00 | 4h 15m | 40 | 170 |
| 9 | August 25, 2022 03:15 | August 25, 2022 05:00 | 1h 45m | 38 | 67 |
| 10 | April 18, 2022 15:45 | April 18, 2022 17:45 | 2h | 25 | 50 |
Outage episodes by size in 2022: 4 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 Brule 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 | - | - | - | - | - |
| Central Electric Coop, Inc - (SD) | - | - | - | - | - |
| Charles Mix Electric Assn, Inc | - | - | - | - | - |
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 ÷ 2,837 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. Brule County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Brule 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/brule-county