
The project will comprise 15 contracts covering a total 127.3 kilometres of cabling, MEA assistant governor Tepsak Titaraksa said on Monday.
The investment will cover the provinces of Bangkok, Nonthaburi and Samut Prakan.
Contracts will be awarded by the end of next year with a view to construction work commencing in 2019.
The overall project is expected to be completed in 2021, he said.
The MEA has already started to move 45.4km of power cables underground at a cost of Bt18 billion on a number of Bangkok thoroughfares, including Rajprarop Road, Sri Ayutthaya Road, Ratchadaphisek Road, Them Rum Mit Road, Rama III Road, Rama IV Road, Narathiwat Ratchanakarin Road, Sathupradit Road, Sathorn Road and Nang Lin Chee Road.