County annual report · FIPS 46013
2019 Brown County, SD Power Outage Report
In 2019, customers in Brown County, SD went without power for an average of 0.1 hours, a total of 1,107 customer-hours (South Dakota average 3.8 hours). That ranks 49th worst of 58 South Dakota counties and 2843rd of 2,945 nationally.
Compared with SD, the US
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Brown County, 2019
The 6 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | September 9, 2019 13:00 | September 9, 2019 14:00 | 1h | 155 | 155 |
| 2 | December 26, 2019 11:45 | December 26, 2019 19:30 | 7h 45m | 144 | 531 |
| 3 | December 29, 2019 17:00 | December 29, 2019 22:15 | 5h 15m | 97 | 249 |
| 4 | December 26, 2019 06:30 | December 26, 2019 10:00 | 3h 30m | 74 | 161 |
| 5 | December 27, 2019 01:30 | December 27, 2019 03:30 | 2h | 4 | 8 |
| 6 | December 27, 2019 13:15 | December 27, 2019 16:00 | 2h 45m | 1 | 3 |
Outage episodes by size in 2019: 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 Brown County reported on EIA Form 861 for 2019, 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) | 2018 | 1.9 hrs | 1.24 | 1.6 hrs | 1.13 |
| Northern Electric Coop, Inc | 2018 | 3.3 hrs | 1.45 | 70 min | 1.25 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Montana-Dakota Utilities Co | - | - | - | - | - |
| NorthWestern Energy | - | - | - | - | - |
| Lake Region Electric Assn, Inc - (SD) | - | - | - | - | - |
| City of Groton - (SD) | - | - | - | - | - |
| City of Hecla | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 87% of South Dakota's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 19,238 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. Brown County has data for 2019–2025.
Cite this report
MassOutage (massoutage.com), Brown County, SD annual power outage report, 2019, 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/2019/south-dakota/brown-county