MANILA, Philippines – Thin power supply continues to hound the Visayas, with four large coal plants not injecting the needed capacity.

In an advisory on Thursday, the National Grid Corp. of the Philippines said the region would be under yellow alert from 3 p.m. to 10 p.m.

READ: Visayas power supply may stay unstable until August

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As of Thursday morning, the available capacity was 2,570 megawatts (MW), while the peak demand was 2,452 MW.