County annual report · FIPS 46011
2020 Brookings County, SD Power Outage Report
In 2020, customers in Brookings County, SD went without power for an average of 0.8 hours, a total of 15K customer-hours (South Dakota average 4.6 hours). That ranks 49th worst of 62 South Dakota counties and 2739th of 3,019 nationally.
Compared with SD, the US and 2019
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Brookings County, 2020
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 1, 2020 13:15 | July 21, 2020 04:00 | 19d 14h | 2,232 | 4,553 |
| 2 | August 8, 2020 19:00 | August 8, 2020 19:15 | 15m | 528 | 132 |
| 3 | December 23, 2020 15:30 | December 23, 2020 15:45 | 15m | 453 | 113 |
| 4 | August 28, 2020 07:15 | August 28, 2020 14:00 | 6h 45m | 279 | 1,174 |
| 5 | February 1, 2020 01:30 | February 1, 2020 07:00 | 5h 30m | 201 | 365 |
| 6 | January 31, 2020 13:15 | January 31, 2020 22:15 | 9h | 193 | 486 |
| 7 | January 18, 2020 20:45 | January 18, 2020 23:00 | 2h 15m | 190 | 384 |
| 8 | July 27, 2020 15:15 | July 27, 2020 17:45 | 2h 30m | 186 | 465 |
| 9 | January 1, 2020 19:15 | January 1, 2020 21:30 | 2h 15m | 184 | 378 |
| 10 | March 19, 2020 17:30 | March 20, 2020 17:00 | 23h 30m | 184 | 344 |
Outage episodes by size in 2020: 15 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 Brookings County reported on EIA Form 861 for 2020, 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 |
|---|---|---|---|---|---|
| Otter Tail Power Co | 2020 | 1.6 hrs | 1.40 | 1.6 hrs | 1.40 |
| Sioux Valley SW Elec Coop | 2020 | 1.5 hrs | 2.73 | 83 min | 2.32 |
| H-D Electric Coop Inc | 2018 | 2.6 hrs | 1.52 | 1.6 hrs | 1.14 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Kingsbury Electric Coop, Inc | - | - | - | - | - |
| City of Arlington - (SD) | - | - | - | - | - |
| City of Aurora - (SD) | - | - | - | - | - |
| City of Brookings - (SD) | - | - | - | - | - |
| City of Volga - (SD) | - | - | - | - | - |
| City of White - (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 79% of South Dakota's customers in 2020; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 19,030 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. Brookings County has data for 2017–2025.
Cite this report
MassOutage (massoutage.com), Brookings County, SD annual power outage report, 2020, 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/2020/south-dakota/brookings-county