County annual report · FIPS 46011
2019 Brookings County, SD Power Outage Report
In 2019, customers in Brookings County, SD went without power for an average of 1.3 hours, a total of 24K customer-hours (South Dakota average 3.8 hours). That ranks 27th worst of 58 South Dakota counties and 2386th of 2,945 nationally.
Compared with SD, the US and 2018
Coverage line is EAGLE-I's share of South Dakota customers tracked each year.
Biggest outages in Brookings County, 2019
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 19, 2019 21:15 | July 26, 2019 21:00 | 6d 23h | 858 | 4,324 |
| 2 | April 10, 2019 22:45 | April 17, 2019 08:15 | 6d 9h | 202 | 7,190 |
| 3 | October 30, 2019 13:45 | November 4, 2019 13:00 | 4d 23h | 187 | 596 |
| 4 | September 12, 2019 03:30 | September 12, 2019 04:45 | 1h 15m | 181 | 118 |
| 5 | May 9, 2019 07:15 | June 25, 2019 17:00 | 47d 9h | 179 | 3,294 |
| 6 | September 10, 2019 14:15 | September 11, 2019 18:45 | 1d 4h | 178 | 353 |
| 7 | November 14, 2019 19:30 | November 14, 2019 23:15 | 3h 45m | 136 | 40 |
| 8 | December 19, 2019 15:15 | December 20, 2019 12:30 | 21h 15m | 136 | 1,164 |
| 9 | September 13, 2019 18:15 | September 13, 2019 18:45 | 30m | 128 | 64 |
| 10 | August 23, 2019 03:30 | August 23, 2019 06:45 | 3h 15m | 114 | 235 |
Outage episodes by size in 2019: 10 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 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 |
|---|---|---|---|---|---|
| Otter Tail Power Co | 2018 | 1.8 hrs | 1.30 | 1.7 hrs | 1.23 |
| Sioux Valley SW Elec Coop | 2018 | 4.0 hrs | 3.62 | 2.0 hrs | 2.88 |
| 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 87% of South Dakota's customers in 2019; 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, 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/brookings-county