Date: August 17, 2021 (Tuesday)
Time: between 5:00 PM to 5:30 PM
Affected Areas: Basud, Daet, San Lorenzo Ruiz, San Vicente, Mercedes, Talisay, Vinzons, Labo, Sta. Elena, Capalonga, Paracale except Poblacion barangays; and Brgy San Martin, Tamisan, portion of Luklukan Sur and portion of Sta Rosa Jose Panganiban.
Sanhi: Load shifting of 100 MVA power transformer to 50 MVA of National Grid Corporation of the Philippines (NGCP).

