Red, yellow alerts raised over Luzon grid on Thursday, June 20, 2019

The Luzon power grid was placed under red and yellow alert status on Thursday amid thinning reserves brought by outages of several power plants.

In an advisory, the National Grid Corporation of the Philippines (NGCP) said the yellow alert stays at 9 a.m. to 10 a.m., 11 a.m. to 1 p.m., and 4 p.m. to 10 p.m.

The red alert status, meanwhile, is in place from 10 a.m. to 11 a.m. and 1 p.m. to 4 p.m.

Yellow alert refers to a condition in which the reserves are less than the capacity of the biggest plant online, which is 647 megawatts for Luzon, while red alert refers to a system condition in which there is zero ancillary services or a generation deficiency exists.

The Luzon grid has an available capacity of 11,217 MW against an expected peak demand of 10,995 MW.

Details on the cause to be announced by the Department of Energy (DOE) later in the day, the NGCP said. —Ted Cordero/KBK, GMA News