Arecibo MunicipioPower Outage History
What this grade means
Bottom 20% least reliable nationally — frequent and/or long outages. This county ranks in the least reliable fifth of all US counties in our dataset: some combination of frequent outages, long restoration times, or customers affected puts it near the bottom nationally. Backup power is worth prioritizing here rather than treating it as optional.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Sep 17, 2022 | 258 hrs | 191,803 (100%) | Unnamed event |
| Dec 31, 2024 | 14 hrs | 191,340 (100%) | Unnamed event |
| Apr 16, 2025 | 9 hrs | 139,095 (73%) | Unnamed event |
| Apr 17, 2025 | 18 hrs | 123,110 (64%) | Unnamed event |
| Aug 14, 2024 | 315 hrs | 81,487 (42%) | Tropical Storm Warning |
Was There an Outage on a Specific Date?
Pick a date to see whether a power outage was recorded for Arecibo Municipio, Puerto Rico that day.
Over the 5 years from 2021 to 2025, Arecibo Municipio recorded 3,516 distinct power outage events, averaging 5.8 hours per event.
The single worst outage on record in Arecibo Municipio started September 17, 2022, lasting 258 hours and leaving up to 191,803 customers without power (100% of the county) at its peak.
May has historically been the worst month for outages in Arecibo Municipio, with 343 events recorded during that month across the dataset.
Based on this history, Arecibo Municipio earns a Reliability Grade of F, placing it in the 0th percentile nationally for grid reliability (higher percentile = more reliable).
Similar counties in Puerto Rico
Counties with the closest reliability grade and national percentile to Arecibo Municipio.
| County | Grade | National percentile |
|---|---|---|
| Ponce Municipio | F | 0th |
| Mayagüez Municipio | F | 0th |
| Caguas Municipio | F | 1st |
| Bayamón Municipio | F | 3rd |
| San Juan Municipio | F | 4th |
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 Arecibo Municipio?
Between 2021 and 2025, Arecibo Municipio recorded 3,516 outage events, averaging 5.8 hours each.
What is Arecibo Municipio's reliability grade?
Arecibo Municipio has a Reliability Grade of F, in the 0th national percentile.
What was the worst power outage in Arecibo Municipio?
The worst outage on record started September 17, 2022, lasting 258 hours and affecting up to 191,803 customers.