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Grid infrastructurePuerto RicoEIR-1224

Fire at Sabana Llana substation leaves more than 200,000 without power

Sept 2026Published 24 Sept 2026Responsible editor: Chief Editor

SignificantThermal / fireProvisional
Estimated damageEstimated by the register's adjusterHow? Know the real figure?
Figure hidden: shown to subscribersLow confidence
supply cut for about •• daysShown in the record →Full estimate
Where
Sabana Llana substation on 23 September 2026
What
Fire took several generation units out of service
Cause
Not reported
Outcome
Left more than 200,000 customers without electricity

What happened

A fire was reported at the Sabana Llana substation. The report said the incident took several generation units out of service and left more than 200,000 customers without electricity. The cause, the extent of damage and whether anyone was injured were not reported.

Contributing factors

Not reported.

Lessons learned

  1. A substation fire can take generation units offline and cut supply to a very large number of customers.
  2. Operators should be ready to restore supply and explain the scale of an outage while the cause is still unknown.
  3. A short early report can confirm an outage without explaining the failure, so technical conclusions should wait for a fuller account.

More lessons on outages, backup supply and restoration, from every incident on the register.

Not yet known

  • Cause of the fire
  • Extent of the damage
  • Whether anyone was injured

This entry is updated when these are reported. Get an alert for the next one like it.

Source

elnuevodia.com

Published 2026-09-24. Written from public reporting. Descriptive, not investigative. See the data accuracy disclaimer.

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Chart to reuse with this story: Grid infrastructure incidents by year, free with a credit (PNG).

Grid infrastructure incidents in Puerto Rico: 4 entries, with a free alert for the next one.

Substation and transformer fires: the counts, the latest entries and a free alert for the next one.

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