Between July and August, Puerto Rico’s electrical system experienced 15 blackouts caused by insufficient power generation, almost matching the 16 outages recorded from May to October 2025, which is typically the period of highest energy demand on the island. The brief report highlights that the number of generation-shortfall blackouts in just two months came close to equaling the total recorded across the six-month peak-demand season the previous year.
Infrastructure
Puerto Rico Power Grid Saw 15 Blackouts in Two Months, Nearly Matching Summer 2025 Total
At a glance
- 15 power outages occurred between July and August
- This number is close to the 16 outages recorded during the peak energy demand period in 2025
- The outages are due to insufficient generation in the electrical system
Why this matters: For Puerto Rican households and businesses, the increase in power outages during peak summer months puts a strain on daily life and economic activities, highlighting the need for a reliable energy supply.
Our coverage
In context (787daily, from public data)
LUMA's portal showed under 0.1% of customers out at 6:07 AM AST on Nov 2, 2026. Across the 57 days 787daily has tracked it, the daily average is 0.3% and the worst was 1.8% on Sep 30, 2026.
LUMA Energy outage portal · Nov 2, 6:07 AM ASTCustomers averaged 28.4 hours without power in the fiscal year that ended in June 2026, the worst of the five full years LUMA has run the grid and up from 26.3 hours the year before.
LUMA operates the transmission and distribution system.
PR Energy Bureau, as filed by LUMA · fiscal year ending June 2026
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