Miner CountyPower Outage History
2014–2025 · South Dakota
Average — typical outage frequency and duration nationally. This county sits in the middle of the national distribution — its outage frequency and duration over the past 12 years are close to the nationwide median, neither notably better nor worse than most other US counties. A typical amount of backup-power preparedness is reasonable here.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 12, 2022 | 70 hrs | 904 (59%) | Hail |
| Jul 5, 2022 | 26 hrs | 515 (34%) | Thunderstorm Wind |
| Nov 20, 2025 | <1 hr | 430 (28%) | Unnamed event |
| Jun 20, 2015 | 2 hrs | 368 (24%) | Unnamed event |
| Jun 25, 2020 | <1 hr | 353 (23%) | Unnamed event |
Over the 12 years from 2014 to 2025, Miner County recorded 100 distinct power outage events, averaging 4.2 hours per event.
The single worst outage on record in Miner County started May 12, 2022 (Hail), lasting 70 hours and leaving up to 904 customers without power (59% of the county) at its peak.
June has historically been the worst month for outages in Miner County, with 15 events recorded during that month across the dataset.
Based on this history, Miner County earns a Reliability Grade of C, placing it in the 53rd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Miner County's outage profile
See more picks in our Best Dual-Fuel Portable Generators for Power Outages roundup.
Champion Power Equipment 4375-Watt Dual Fuel RV Ready Portable Generator with Free 3-Year Warranty
Outage-prep kit
See our outage-prep guides.
No ads. No data selling. This site runs entirely on Amazon affiliate commissions — buying through our links costs you nothing extra and keeps it free for everyone.
Read our mission →Similar counties in South Dakota
Counties with the closest reliability grade and national percentile to Miner County.
| County | Grade | National percentile |
|---|---|---|
| Moody County | C | 54th |
| Sanborn County | C | 49th |
| Haakon County | C | 57th |
| Deuel County | C | 57th |
| Hamlin County | C | 47th |
Most reliable counties in South Dakota
The top 3 counties in South Dakota by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Clay County | A | 100th |
| Codington County | A | 98th |
| Tripp County | A | 98th |
Least reliable counties in South Dakota
The bottom 3 counties in South Dakota by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Harding County | D | 21st |
| Perkins County | D | 29th |
| Custer County | D | 30th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Miner County?
Between 2014 and 2025, Miner County recorded 100 outage events, averaging 4.2 hours each.
What is Miner County's reliability grade?
Miner County has a Reliability Grade of C, in the 53rd national percentile.
What was the worst power outage in Miner County?
The worst outage on record started May 12, 2022 (Hail), lasting 70 hours and affecting up to 904 customers.