MANILA, Philippines — The National Grid Corporation of the Philippines (NGCP) has extended the red alert status for Luzon grid until 11 p.m. Thursday. NGCP initially placed Luzon grid under red alert status from 6 p.m. to 9 p.m. Thursday. ADVERTISEMENTNGCP said once the red alert status has been lifted, Luzon grid will then be placed under yellow alert from 11 p.m. until midnight. A “red alert” is “a system condition when there is zero ancillary service (AS) or a generation deficiency exists” while a “yellow alert” means “a grid’s reserve power—the difference between supply and demand—is below the required level,” NGCP explained. Parts of Luzon, including portions of Metro Manila, experienced rotational brownouts on Thursday, April 25, due to thinning power supply.

Source: Philippine Daily Inquirer April 25, 2019 12:48 UTC