They will be on 24-hour standby duty starting tomorrow, said TNB senior general manager (distribution network) Wan Nazmy Wan Mahmood.

"TNB is making preparations to minimise any potential electricity interruption during the festive season, including inspections at all power stations and substations," he said in a statement today.

In addition, improvements to the substation system to accommodate increased load expectations in some areas are also being implemented.

"More than 60 sets of mobile generators with capacity ranging from 125 KVA to 1,250 KVA are also on standby to be used as an alternative supply source, if the need arises," he said.

Wan Nazmy advised consumers to contact the TNB Customer Service Centre at 15454 or Facebook TNB Careline for assistance in the event of a power failure during the Aidilifitri celebration.