SIGNIFICANT INCIDENT NOTICE

SIGNIFICANT INCIDENT NOTICE
(Information from TransCo)
Description of Outages:
Partial System Blackout (PSB) at Palawan Grid
Date: August 27, 2025
Time of Incident: 4:57PM
Probable Cause: Narra-Thermal 69kV T/L Trip
Affected Area: Brooke’s Point, 21ML4 Narra, Palawan and Iwahig, Wescom, San
Jose Feeders
Weather: Heavy Rain