County annual report · FIPS 46011
2023 Brookings County, SD Power Outage Report
In 2023, customers in Brookings County, SD went without power for an average of 0.9 hours, a total of 17K customer-hours (South Dakota average 2.3 hours). That ranks 51st worst of 61 South Dakota counties and 2709th of 2,977 nationally.
Compared with SD, the US and 2022
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Brookings County, 2023
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | March 30, 2023 01:15 | March 30, 2023 04:45 | 3h 30m | 531 | 426 |
| 2 | June 11, 2023 13:45 | July 6, 2023 16:30 | 25d 2h | 453 | 2,414 |
| 3 | October 10, 2023 16:15 | October 16, 2023 00:45 | 5d 8h | 452 | 1,019 |
| 4 | March 21, 2023 15:15 | March 21, 2023 16:15 | 1h | 373 | 373 |
| 5 | April 20, 2023 05:15 | April 20, 2023 07:30 | 2h 15m | 279 | 481 |
| 6 | January 1, 2023 00:00 | January 18, 2023 15:45 | 17d 15h | 204 | 781 |
| 7 | January 23, 2023 07:30 | January 23, 2023 09:00 | 1h 30m | 203 | 305 |
| 8 | February 2, 2023 12:15 | February 2, 2023 14:45 | 2h 30m | 203 | 431 |
| 9 | May 11, 2023 05:30 | June 11, 2023 12:15 | 31d 6h | 183 | 2,504 |
| 10 | October 19, 2023 14:00 | December 1, 2023 18:30 | 43d 4h | 177 | 2,836 |
Outage episodes by size in 2023: 15 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 Brookings County reported on EIA Form 861 for 2023, 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 | 2023 | 2.4 hrs | 1.78 | 1.9 hrs | 1.68 |
| Sioux Valley SW Elec Coop | 2023 | 60 min | 1.46 | 60 min | 1.46 |
| H-D Electric Coop Inc | 2018 | 2.6 hrs | 1.52 | 1.6 hrs | 1.14 |
| City of Brookings - (SD) | 2023 | 62 min | 1.16 | 9 min | 0.20 |
| 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 n/a of South Dakota's customers in 2023; 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, 2023, 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/2023/south-dakota/brookings-county