SESB said in a statement that 400 of the staff were from the distribution division, 100 from generation and 42 from transmission and operating system.
"This preparation and monitoring can reduce any disruption to the minimum," it said.
SESB expressed confidence that several initiatives it had taken would have a positive impact on the electricity supply system in Sabah and the Federal Territory of Labuan.
It advised consumers to contact the SESB hotline at 15454 or 088-515000 if they faced any power supply disruption, and said all complaints would be attended to immediately.
It said the SESB management and staff extended Aidilfitri greetings to all consumers.