A fire broke out at a Ceylon Electricity Board grid substation in Kotugoda, Opatha, Ja-Ela following an explosion of a transformer.
Power went off in several areas near Negombo due to the malfunctioning transformer.
Power has also failed in Deraniyagala, Karawanella, Kithulgala and surrounding areas owing to the fire.
The power capacity lost is estimated to be 300 megawatts. It is suspected that the fire may have caught on due to the transformer overheating.
The fire has since been completely extinguished after being doused by the Fire Brigade.