Luzon grid under yellow, red alerts on Tuesday – NGCP

  MANILA, Philippines --- The Luzon grid was placed under yellow and red alerts on Tuesday, June 18, the National Grid Corporation of the Philippines (NGCPP) said.   In a Facebook post, the NCGP said the country's biggest power grid will be under yellow alert during the following time periods: 9a.m. -- 10a.m. 11a.m. -- 1p.m. 3p.m. -- 5p.m. 6p.m. -- 9p.m.   The Luzon grid will be under red alert status from 10 a.m. to 11 a.m. and again on 1 p.m. to 3 p.m.   The NGCP said a yellow alert is raised when a grid's reserve power --- the difference between supply and demand --- is below the required level.   A red alert is likewise raised w...

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