County annual report · FIPS 46011
2022 Brookings County, SD Power Outage Report
In 2022, customers in Brookings County, SD went without power for an average of 8.9 hours, a total of 170K customer-hours (South Dakota average 6.9 hours). That ranks 25th worst of 63 South Dakota counties and 815th 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 Brookings 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 15:15 | June 27, 2022 06:00 | 45d 14h | 3,433 | 151K |
| 2 | April 23, 2022 18:45 | April 23, 2022 22:45 | 4h | 1,865 | 3,746 |
| 3 | April 12, 2022 16:30 | April 12, 2022 17:30 | 1h | 453 | 253 |
| 4 | December 14, 2022 08:15 | January 1, 2023 00:00 | 17d 15h | 320 | 7,641 |
| 5 | December 13, 2022 13:15 | December 14, 2022 03:15 | 14h | 224 | 805 |
| 6 | July 6, 2022 09:00 | July 10, 2022 17:15 | 4d 8h | 138 | 569 |
| 7 | November 10, 2022 20:00 | November 11, 2022 09:15 | 13h 15m | 129 | 580 |
| 8 | September 21, 2022 13:15 | September 21, 2022 18:45 | 5h 30m | 118 | 379 |
| 9 | February 8, 2022 14:45 | February 8, 2022 19:15 | 4h 30m | 92 | 32 |
| 10 | August 25, 2022 13:45 | September 1, 2022 12:15 | 6d 22h | 90 | 262 |
Outage episodes by size in 2022: 8 reached 100+ customers, 2 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 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 |
|---|---|---|---|---|---|
| Otter Tail Power Co | 2022 | 6.2 hrs | 2.20 | 2.1 hrs | 1.80 |
| Sioux Valley SW Elec Coop | 2022 | 11.5 hrs | 2.53 | 2.2 hrs | 1.66 |
| H-D Electric Coop Inc | 2018 | 2.6 hrs | 1.52 | 1.6 hrs | 1.14 |
| City of Brookings - (SD) | 2022 | 29.3 hrs | 1.08 | 29.3 hrs | 1.08 |
| WAPA-- Western Area Power Administration | - | - | - | - | - |
| Kingsbury Electric Coop, Inc | - | - | - | - | - |
| City of Arlington - (SD) | - | - | - | - | - |
| City of Aurora - (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 89% of South Dakota's customers in 2022; 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, 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/brookings-county