It is also the first newly commissioned wind farm in the Ocean Winds portfolio – a 50:50 joint venture (JV) between EDP Renewables and Engie, which holds a 79.4% stake in the project.
The 25MW WindFloat Atlantic WindFloat Atlantic (25MW) Offshoreoff Viana do Castelo, Portugal, Europe Click to see full details project consists of three MHI Vestas V164-8.4 turbines, the first of which was installed in October 2019, the second in January 2020 and the final one in June. They are the most powerful turbines yet installed in floating platforms.
They are installed on Principle Power’s ballasted, triangular, semi-submersible foundations 20km from the north-west Portuguese coast in water depths of 100 metres. The platforms are 30 metres high and are braced by a 50-metre section between columns.
Theys were assembled in a dry dock – a narrow basin that can be flooded to allow a load to be floated in, then drained to allow that load to come to rest on a dry platform. The project partners – Ocean Winds, Repsol (19.4% owner) and Principle Power (1.2%) – stated that this provided significant logistical and financial savings.
They were then towed to the site using standard tugboats.
The project partners added that they believe these processes could be replicated in other areas where adverse seabed conditions or significant water depth mean traditional fixed-bottom offshore wind technology is not an option.