The Visayas continues to experience tight power situation amid the unavailability of three major coal facilities.
The National Grid Corp. of the Philippines on Monday placed the Visayas grid under yellow alert anew, from 4 p.m. to 8 p.m.
As of Monday morning, available capacity was 2,659 megawatts (MW), while peak demand was 2,510 MW.
A yellow alert indicates that available power reserves are thinning, meaning any unexpected plant outage could trigger service interruptions.