Worcester CountyPower Outage History
What this grade means
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 |
|---|---|---|---|
| Aug 4, 2020 | 80 hrs | 70,225 (17%) | Tropical Storm Isaias |
| Mar 8, 2018 | 52 hrs | 64,022 (15%) | High Wind |
| Oct 7, 2020 | 79 hrs | 44,540 (11%) | Thunderstorm Wind |
| Oct 30, 2017 | 67 hrs | 43,714 (10%) | Tropical Storm Phillipe |
| Mar 14, 2023 | 59 hrs | 30,832 (7%) | Heavy Snow |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Worcester County, Massachusetts that day.
Over the 12 years from 2014 to 2025, Worcester County recorded 3,456 distinct power outage events, averaging 2.7 hours per event.
The single worst outage on record in Worcester County started August 4, 2020 (Tropical Storm Isaias), lasting 80 hours and leaving up to 70,225 customers without power (17% of the county) at its peak.
July has historically been the worst month for outages in Worcester County, with 402 events recorded during that month across the dataset.
Based on this history, Worcester County earns a Reliability Grade of C, placing it in the 55th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Massachusetts
Counties with the closest reliability grade and national percentile to Worcester County.
| County | Grade | National percentile |
|---|---|---|
| Essex County | C | 50th |
| Nantucket County | C | 47th |
| Plymouth County | C | 47th |
| Middlesex County | B | 64th |
| Dukes County | B | 67th |
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 Worcester County?
Between 2014 and 2025, Worcester County recorded 3,456 outage events, averaging 2.7 hours each.
What is Worcester County's reliability grade?
Worcester County has a Reliability Grade of C, in the 55th national percentile.
What was the worst power outage in Worcester County?
The worst outage on record started August 4, 2020 (Tropical Storm Isaias), lasting 80 hours and affecting up to 70,225 customers.