County annual report · FIPS 46013
2022 Brown County, SD Power Outage Report
In 2022, customers in Brown County, SD went without power for an average of 5.5 hours, a total of 106K customer-hours (South Dakota average 6.9 hours). That ranks 27th worst of 63 South Dakota counties and 1307th 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 Brown 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 | July 3, 2022 09:15 | July 3, 2022 16:45 | 7h 30m | 6,204 | 33K |
| 2 | July 6, 2022 18:45 | July 6, 2022 22:30 | 3h 45m | 5,328 | 12K |
| 3 | June 21, 2022 02:45 | June 21, 2022 06:00 | 3h 15m | 1,972 | 4,021 |
| 4 | April 30, 2022 02:30 | April 30, 2022 05:45 | 3h 15m | 1,677 | 3,944 |
| 5 | April 10, 2022 20:45 | April 10, 2022 23:30 | 2h 45m | 1,399 | 3,434 |
| 6 | March 30, 2022 02:30 | March 30, 2022 05:15 | 2h 45m | 1,267 | 3,021 |
| 7 | November 10, 2022 08:30 | November 18, 2022 15:30 | 8d 7h | 1,253 | 22K |
| 8 | September 15, 2022 10:00 | September 15, 2022 12:45 | 2h 45m | 1,213 | 2,732 |
| 9 | April 10, 2022 13:15 | April 10, 2022 17:00 | 3h 45m | 584 | 2,188 |
| 10 | August 24, 2022 17:45 | August 25, 2022 16:15 | 22h 30m | 480 | 2,717 |
Outage episodes by size in 2022: 28 reached 100+ customers, 8 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 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 |
| Northern Electric Coop, Inc | 2022 | 5.1 hrs | 1.09 | 1.8 hrs | 0.77 |
| 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 89% of South Dakota's customers in 2022; 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, 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/brown-county