(Eagle News)–The National Grid Corporation of the Philippines announced on Friday, May 3, that red and yellow alerts would be in effect over Luzon grid within the day. The NGCP said a yellow alert, which means reserves are below required levels, was in effect from 9 a.m. to 10 a.m. The NGCP said the same alert would be in place from 11 a.m. to  noon, from 4 p.m. to 5 p.m. and from 6 p.m. […]