Hughes County Power Outage History
2019–2024 · South Dakota
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 11, 2020 | 1 hrs | 428 (3%) | Unnamed event |
| Aug 13, 2020 | 4 hrs | 428 (3%) | Unnamed event |
| Aug 10, 2020 | 10 hrs | 428 (3%) | Unnamed event |
| Jul 19, 2024 | 4 hrs | 418 (2%) | Excessive Heat |
| Nov 29, 2022 | 5 hrs | 414 (2%) | Unnamed event |
Over the 6 years from 2019 to 2024, Hughes County recorded 21 distinct power outage events, averaging 4.0 hours per event.
The single worst outage on record in Hughes County started August 11, 2020, lasting 1 hours and leaving up to 428 customers without power (3% of the county) at its peak.
August has historically been the worst month for outages in Hughes County, with 5 events recorded during that month across the dataset.
Based on this history, Hughes County earns a Reliability Grade of A, placing it in the 98th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Hughes County's outage profile
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Similar counties in South Dakota
Counties with the closest reliability grade and national percentile to Hughes County.
| County | Grade | National percentile |
|---|---|---|
| Gregory County | A | 98th |
| Tripp County | A | 98th |
| Codington County | A | 98th |
| Bennett County | A | 99th |
| Jerauld County | A | 96th |
FAQ
How often does power go out in Hughes County?
Between 2019 and 2024, Hughes County recorded 21 outage events, averaging 4.0 hours each.
What is Hughes County's reliability grade?
Hughes County has a Reliability Grade of A, in the 98th national percentile.
What was the worst power outage in Hughes County?
The worst outage on record started August 11, 2020, lasting 1 hours and affecting up to 428 customers.