Grundy CountyPower Outage History
What this grade means
Top 20% most reliable nationally — infrequent, short outages. This county ranks in the most reliable fifth of all US counties in our dataset, based on 12 years of real DOE outage records: outages happen less often here, and when they do occur they tend to be resolved quickly compared to the rest of the country. Baseline outage risk is low, though a severe local storm can still occasionally cause a longer-than-usual outage regardless of the long-term track record.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 19, 2015 | 3 hrs | 687 (10%) | Unnamed event |
| Apr 28, 2015 | <1 hr | 686 (10%) | Unnamed event |
| May 19, 2022 | 2 hrs | 661 (9%) | Unnamed event |
| Jun 25, 2021 | 21 hrs | 625 (9%) | Hail |
| Apr 28, 2015 | <1 hr | 428 (6%) | Unnamed event |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Grundy County, Missouri that day.
Over the 11 years from 2015 to 2025, Grundy County recorded 116 distinct power outage events, averaging 2.4 hours per event.
The single worst outage on record in Grundy County started July 19, 2015, lasting 3 hours and leaving up to 687 customers without power (10% of the county) at its peak.
April has historically been the worst month for outages in Grundy County, with 16 events recorded during that month across the dataset.
Based on this history, Grundy County earns a Reliability Grade of A, placing it in the 94th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Grundy County.
| County | Grade | National percentile |
|---|---|---|
| Dunklin County | A | 94th |
| Laclede County | A | 95th |
| Pulaski County | A | 95th |
| Livingston County | A | 95th |
| Callaway County | A | 95th |
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 Grundy County?
Between 2015 and 2025, Grundy County recorded 116 outage events, averaging 2.4 hours each.
What is Grundy County's reliability grade?
Grundy County has a Reliability Grade of A, in the 94th national percentile.
What was the worst power outage in Grundy County?
The worst outage on record started July 19, 2015, lasting 3 hours and affecting up to 687 customers.