PowerOutageHistory
Reliability Grade
C
Average
2021-2022
Puerto Rico

Carolina MunicipioPower Outage History

20212022 · Puerto Rico
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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.

Takeaway
Typical outage risk
Reliability Rank
Fuller bar = more reliable
Nationwide51st pct
In Puerto RicoMost reliable of 7
See full Puerto Rico rankings →
Total events
1,089
Recorded 2021–2022
Avg duration
3.7 hrs
Per outage event
Longest outage
72 hrs
Single worst event on record
Customers served
68,476
Utility customers in county

Outages by year

Outages by month (seasonality)

Worst outage events on record

DateDurationCustomers affectedCause
Sep 27, 202124 hrs32,307 (47%)Tropical Storm Peter
Mar 7, 20212 hrs31,265 (46%)Unnamed event
Feb 23, 2021<1 hr30,871 (45%)Unnamed event
Sep 28, 202116 hrs26,339 (38%)Tropical Storm Peter
May 20, 20211 hrs25,223 (37%)Unnamed event

Was There an Outage on a Specific Date?

Pick a date to see whether a power outage was recorded for Carolina Municipio, Puerto Rico that day.

Over the 2 years from 2021 to 2022, Carolina Municipio recorded 1,089 distinct power outage events, averaging 3.7 hours per event.

The single worst outage on record in Carolina Municipio started September 27, 2021 (Tropical Storm Peter), lasting 24 hours and leaving up to 32,307 customers without power (47% of the county) at its peak.

May has historically been the worst month for outages in Carolina Municipio, with 121 events recorded during that month across the dataset.

Based on this history, Carolina Municipio earns a Reliability Grade of C, placing it in the 51st percentile nationally for grid reliability (higher percentile = more reliable).

Similar counties in Puerto Rico

Counties with the closest reliability grade and national percentile to Carolina Municipio.

Most reliable counties nationally

The top 3 counties nationally by reliability grade and percentile.

CountyStateGradeNational percentile
Clay CountySouth DakotaA100th
Clearwater CountyMinnesotaA99th
Limestone CountyAlabamaA99th

Least reliable counties nationally

The bottom 3 counties nationally by reliability grade and percentile.

FAQ

How often does power go out in Carolina Municipio?

Between 2021 and 2022, Carolina Municipio recorded 1,089 outage events, averaging 3.7 hours each.

What is Carolina Municipio's reliability grade?

Carolina Municipio has a Reliability Grade of C, in the 51st national percentile.

What was the worst power outage in Carolina Municipio?

The worst outage on record started September 27, 2021 (Tropical Storm Peter), lasting 24 hours and affecting up to 32,307 customers.

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Data: ORNL EAGLE-I Recorded Electricity Outages (2014–2025), CC BY 4.0. Storm names: NOAA Storm Events Database. Last data refresh: 2022. See methodology.