Fugro has commenced geotechnical surveys for an 800-MW offshore windfarm off the Mekong Delta in Vietnam that would be the country’s first commercial-scale project
Fugro has commenced geotechnical surveys for an 800-MW offshore windfarm off the Mekong Delta in Vietnam that would be the country’s first commercial-scale project.
Mainstream Renewable Power is developing the project with Vietnamese partner Phu Cuong. The project is located offshore Soc Trang province and is due to be developed in phases, each of approximately 150-200 MW.
Mainstream Renewable Power group chief executive Andy Kinsella told the Global Offshore Wind 2019 conference that the company had secured permission to undertake the surveys earlier this year. He said the company expected to have “full rights” required to develop the windfarm by the end of July.
The company has collected four years of wind data and plans to install another LiDAR shortly. Metocean work has also been conducted along with UXO surveys. Mr Kinsella said the area in which the windfarm is being developed had been heavily bombed during the Vietnam War.
“We are conducting an environmental impact assessment (EIA) that is in accordance with Vietnamese requirements,” he explained, “but it is also being conducted in accordance with our own high standards of the type we would use anywhere else.”
The company is studying at least two types of foundation that might be suitable for the project, for which innovative solutions may be required given the water depth and soil conditions.
The first is a conventional monopile, the second what Mr Kinsella described as a “concrete-filled raft.” He said these designs had been submitted to engineering, procurement and construction companies for pricing and the company had sought prices for turbines and balance of plant services. Mr Kinsella did not indicate what size turbines the project will use.
Mainstream Renewable Power had hoped to reach financial close on the first phase of the windfarm, which Mr Kinsella said was a US$2.5Bn project, in 2018.
Another, much larger offshore windfarm in Vietnamese waters is also being planned and recently secured permission for site surveys.
Developer Enterprize Energy is hoping to develop a massive 3.4-GW project, Thang Long. Like Mainstream, Enterprize Energy plans to develop the huge windfarm in phases, each of 400-600 MW. The company said it hoped the project would be operational in late 2022/early 2023.