Vietnam launches Southeast Asia's longest submarine power cable to Con Dao Islands
After six months of construction, a VND4.9 trillion (US$185.6 million) submarine cable project is now operational, providing Con Dao Islands with stable electricity and eliminating its reliance on diesel.
The Project Management Board of Electric Power 3, under Vietnam Electricity (EVN), energized the 110kV Con Dao transformer station on Thursday, officially connecting the island to the national grid.
![]() |
Construction of a submarine cable from Can Tho City to Con Dao Island. |
The electricity flows from Can Tho City, crossing the sea to Con Dao, a popular tourist destination off Vietnam's southern coast.
The project, funded by EVN, includes a 17.5 km overhead line through Can Tho City, a 77 km submarine cable, an 8.5 km underground cable on the island, and the expansion of the 220kV transformer station in Can Tho. Additionally, a new 110/22kV GIS transformer station has been built on Con Dao.
According to EVN, According to EVN, this is the most complex offshore power project to date. Vietnamese contractors are responsible for trenching, laying submarine cables, and using a record-long 61-meter concrete pile foundation for the offshore power line.
The cable is buried at a depth of up to 52 meters, the deepest in Vietnam, and becomes the longest 110 kV submarine cable line in Southeast Asia.
The project ensures a safe, continuous, and stable electricity supply for Con Dao, supporting socio-economic development, national defense, and security.
The project replaces local diesel generators, reduces electricity production costs, cuts greenhouse gas emissions, and aligns with Vietnam's sustainable development and emission reduction commitments, the company said.
The plan is to provide Con Dao with a total capacity of about 29 MW in 2026, over 55 MW in 2026, and 90 MW by 2035.
Con Dao archipelago spans nearly 76 square kilometers and includes 16 islands, with Con Son as the largest and only inhabited one with around 10,000 residents, located 185 km from Vung Tau.
Reader's comments (0)