MANILA, Philippines (UPDATED) – The National Grid Corporation of the Philippines (NGCP) raised the red alert status in the Luzon grid for a second straight day, as power supply continued to thin.

The red alert status was raised at 10 am and lifted past 2 pm on Thursday, April 11.

But yellow alert was declared for 4 pm to 9 pm. It was also raised earlier from 8 am to 10 am.

A red or yellow alert means there is insufficient power supply in the grid.

The available capacity of the grid stood at 10,749 megawatts (MW), while peak demand was at 10,300 MW as of 2:30 pm.

Due to the thinning supply, the Manila Electric Company (Meralco) again implemented manual load dropping or rotational brownouts.

Meralco said parts of Quezon City and Marikina City were affected on Thursday.

Meralco also said it already reached out to establishments participating in the Interruptible Load Program to prepare to use their generators to mitigate power outages.

The Department of Energy earlier assured customers that it does not expect brownouts, yet various areas in Luzon experienced outages. – Rappler.com