County annual report · FIPS 46015
2024 Brule County, SD Power Outage Report
In 2024, customers in Brule County, SD went without power for an average of 0.7 hours, a total of 1,924 customer-hours (South Dakota average 2.3 hours). That ranks 55th worst of 65 South Dakota counties and 2807th 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 Brule 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 | September 10, 2024 13:45 | September 10, 2024 14:30 | 45m | 444 | 333 |
| 2 | July 14, 2024 07:30 | July 14, 2024 13:30 | 6h | 255 | 1,030 |
| 3 | May 28, 2024 14:15 | May 28, 2024 15:30 | 1h 15m | 42 | 22 |
| 4 | August 20, 2024 17:30 | August 20, 2024 22:00 | 4h 30m | 25 | 38 |
| 5 | July 19, 2024 14:45 | July 19, 2024 19:30 | 4h 45m | 24 | 36 |
| 6 | August 28, 2024 00:30 | August 28, 2024 02:30 | 2h | 24 | 43 |
| 7 | June 24, 2024 01:15 | June 24, 2024 07:30 | 6h 15m | 23 | 126 |
| 8 | April 18, 2024 15:00 | April 18, 2024 16:45 | 1h 45m | 19 | 33 |
| 9 | November 4, 2024 23:45 | November 5, 2024 01:15 | 1h 30m | 19 | 20 |
| 10 | May 24, 2024 15:00 | May 24, 2024 17:45 | 2h 45m | 16 | 10 |
Outage episodes by size in 2024: 2 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 Brule 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 | - | - | - | - | - |
| 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 n/a of South Dakota's customers in 2024; 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, 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/brule-county