Luzon grid on red alert
The National Grid Corp. of the Philippines (NGCP) raised the red alert status on the Luzon grid from 11 am to 3 pm “due to the unexpected shutdown of some power plants.”
Based on its monitoring, NGCP said available capacity in the power grid was at 9,083 megawatts (MW) while peak demand was expected to reach 9,051 MW.
This was later downgraded to yellow alert from 2 pm to 8 pm because of insufficient operating reserves.
Manila Electric Co. (Meralco) said the power supply deficiency was due to the sudden outage of Pagbilao and QPPL power plants.
Red alert refers to the system condition when the contingency reserve is zero or a generation deficiency exists.
Yellow alert, on the other hand, is a system condition where the total all reserves is less than the capacity of the largest plant online, which for the Luzon grid, is 647 MW.