San Juan Municipio Power Outage History
2021–2025 · Puerto Rico
Bottom 20% least reliable nationally — frequent and/or long outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Dec 31, 2024 | 14 hrs | 359,030 (91%) | Unnamed event |
| Apr 16, 2025 | 14 hrs | 282,355 (72%) | Unnamed event |
| Jun 9, 2024 | 126 hrs | 193,845 (49%) | Excessive Heat |
| Aug 11, 2024 | 362 hrs | 174,374 (44%) | Unnamed event |
| Jan 1, 2025 | 17 hrs | 100,839 (26%) | Unnamed event |
Over the 5 years from 2021 to 2025, San Juan Municipio recorded 3,557 distinct power outage events, averaging 7.1 hours per event.
The single worst outage on record in San Juan Municipio started December 31, 2024, lasting 14 hours and leaving up to 359,030 customers without power (91% of the county) at its peak.
March has historically been the worst month for outages in San Juan Municipio, with 347 events recorded during that month across the dataset.
Based on this history, San Juan Municipio earns a Reliability Grade of F, placing it in the 4th percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Puerto Rico
Counties with the closest reliability grade and national percentile to San Juan Municipio.
| County | Grade | National percentile |
|---|---|---|
| Bayamón Municipio | F | 3rd |
| Caguas Municipio | F | 1st |
| Ponce Municipio | F | 0th |
| Arecibo Municipio | F | 0th |
| Mayagüez Municipio | F | 0th |
FAQ
How often does power go out in San Juan Municipio?
Between 2021 and 2025, San Juan Municipio recorded 3,557 outage events, averaging 7.1 hours each.
What is San Juan Municipio's reliability grade?
San Juan Municipio has a Reliability Grade of F, in the 4th national percentile.
What was the worst power outage in San Juan Municipio?
The worst outage on record started December 31, 2024, lasting 14 hours and affecting up to 359,030 customers.