Manila, Sept. 14 -- A six-hour red alert is raised for the Visayas grid on Monday, from 3 p.m. to 9 p.m., still due to the unavailability of several major coal-fired power plants.

The grid is also on yellow alert, from 1 p.m. to 3 p.m. and from 9 p.m. to 11 p.m.

Available capacity is around 2,153 megawatts (MW) while peak demand is around 2,462MW, according to the National Grid Corporation of the Philippines (NGCP).

NGCP said Units 1 and 2 of the Therma Visayas Inc. and Unit 3 of the Panay Energy Development Corporation remain unavailable.

These power plants are among the 12 facilities that are on forced outage just this month alone that lessen capacity in the grid.

NGCP also said 22 power plants are on forced outage as far back as 2...