National Grid Corp. of the Philippines placed the Luzon grid on yellow alert for six hours on Monday after 4,558 megawatts of power generation capacity went offline.
The Department of Energy, meanwhile, has come out with the draft guidelines on the planned outage schedules of power plants and transmission facilities and publication of the grid operating and maintenance program.
NGCP declared the yellow alert, which means the reserve power is low but no manual load dropping is implemented, from 10:01 a.m. to 4 p.m.
“This is due to insufficient operating reserve brought about by power plant outages,” retailer Manila Electric Co. said in an advisory.
Meralco said it was prepared to tap corporations and commercial establishments participating under the interruptible load program to use their generator sets to minimize incidents of power outage.
The DOE said seven power plants were on maintenance shutdown or planned outage affecting some 2,312 megawatts of capacity.