Electricity will be cut along a large section of Phra Metta Rd from 8am to 5pm, Patong Municipality explained in its notice.
The affected area stretches from Phra Barami Rd (near the Government Savings Bank branch) at the northern end of Patong and will continue to Sainamyen Rd (the intersection at Patong Hospital).
Nearby areas and side streets will be affected, including Patong Municipality offices, the announcement said.
The PEA apologised for any inconvenience caused and advised residents and businesses in the affected area to make necessary preparations in advance.