MARINE RENEWABLES
15mW TURBINES: THE DAWN OF A NEW ERA Danish wind turbine specialist company Vestas is developing a new wind turbine that will be the most powerful currently on offer in this fast developing market writes Dag Pike Rated at 15mW, the company expects that it will be a ‘highly competitive unit for wind farm tenders from this year onwards. It is anticipated that the first of these large turbines will be ready for trials from next year and it is anticipated that it will go into series production by 2024. The new turbine, named V236-15MW, will have swept area of more than 43,000 sq.metres and a rotor of 236 metres in diameter and is calculated to produce around 80GWh/year, which is enough to power around 20,000 homes. Whilst the new turbine with its high rating is designed to deliver excellent performance it will reduce the number of turbines required for a wind farm which should reduce installation costs. New higher rated construction vessels may be required for the installation work but these are already under construction. The turbine will offer a 65% higher annual energy production than the V174-9.5 MW unit from Vestas and for a 900mW offshore wind farm it will boost production by 5% with 34 fewer turbines. The new turbine is also expected to offer excellent partial-load production, which will result in more stable energy production, and a capacity factor of in excess of 60%, depending on site-specific conditions. The president and chief executive of Vestas, Henrik Andersen said, “Introducing our new offshore platform is a huge achievement for everyone at Vestas and is a big leap forward in a very important journey. As a global renewables leader, every decision Vestas takes today must be in the service of building scale for renewables in the future - only by doing this can we ensure a more sustainable future energy system. Offshore wind will play an integral role in the
growth of wind energy and the V236-15.0MW will be a driver in this development, reducing the levelised cost of energy, making our customers more competitive in offshore tenders going forward.” Vestas said the V236-15.0 MW “will continue to harness design synergies from existing turbine platforms, such as its 9-MW unit.” It is anticipated that future upgrades will take the rating even higher.
8 V236-15MW will have swept area of more than 43,000 sq.metres
The first and only offshore wind turbine installed in France has set new power generation and capacity factor records, strengthening the emerging offshore floating wind industry. Ideol’s 2MW ‘Floatgen’ floating wind turbine, installed at the Sem-Rev test site off Le Croisic, produced 14% more power in 2020 than in 2019, reaching an annual total of 6.8GWh. This means the wind turbine has produced a total of 12.8GWh in two years. “Moreover, a new capacity factor record was reached in February 2020 with more than 66%. The wind turbine faced very challenging weather conditions, with maximum wave heights of nearly 11 meters in February 2020,” said Ideol. “The excellent performance and seakeeping performance of Ideol’s patented Damping Pool technology are thus once again confirmed.”
24 | FEBRUARY 2021
Photo: Ideol
Floating wind project sets new records
8 Ideol’s floating wind technology
THREE-YEAR DEAL SIGNED Following these results, Ideol has confirmed its partnership with Ecole Centrale de Nantes,
which operates SEM-REV, the site on which Floatgen is installed, and signed an agreement which extends the operation of the floating wind turbine by three years. These three additional years will allow Ideol to pursue its research activities in order to further optimize its solution. Built around a European consortium of seven partners, Floatgen is being supported by the European Union as part of the FP7 programme. Ideol has a second floating wind turbine in operation in Japan, off Kitakyushu. The company’s ‘Damping Pool’ design is claimed to be compatible with all existing offshore wind turbines. Recent offshore wind commercial projects include a 250MW commercial farm in southern Brittany, for which a call for tenders is expected soon.
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