County annual report · FIPS 46079
2022 Lake County, SD Power Outage Report
In 2022, customers in Lake County, SD went without power for an average of 19.8 hours, a total of 160K customer-hours (South Dakota average 6.9 hours). That ranks 14th worst of 63 South Dakota counties and 331st 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 Lake 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 16:15 | June 27, 2022 06:00 | 45d 13h | 3,402 | 149K |
| 2 | November 10, 2022 14:45 | November 10, 2022 18:45 | 4h | 1,337 | 398 |
| 3 | June 27, 2022 06:45 | July 4, 2022 21:15 | 7d 14h | 599 | 2,272 |
| 4 | April 20, 2022 22:00 | April 20, 2022 22:15 | 15m | 282 | 71 |
| 5 | July 5, 2022 02:00 | July 10, 2022 17:15 | 5d 15h | 213 | 1,245 |
| 6 | July 25, 2022 23:45 | July 26, 2022 00:15 | 30m | 209 | 105 |
| 7 | February 23, 2022 06:45 | February 23, 2022 12:45 | 6h | 187 | 1,122 |
| 8 | February 9, 2022 15:45 | February 9, 2022 17:30 | 1h 45m | 170 | 255 |
| 9 | April 23, 2022 17:00 | April 24, 2022 08:30 | 15h 30m | 161 | 841 |
| 10 | October 21, 2022 18:00 | October 21, 2022 18:30 | 30m | 160 | 42 |
Outage episodes by size in 2022: 14 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 Lake 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 |
| Northern States Power Co - Minnesota | 2022 | 4.0 hrs | 1.08 | 72 min | 0.72 |
| Sioux Valley SW Elec Coop | 2022 | 11.5 hrs | 2.53 | 2.2 hrs | 1.66 |
| Southeastern Electric Coop Inc - (SD) | - | - | - | - | - |
| City of Madison - (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 ÷ 8,064 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. Lake County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Lake 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/lake-county