Siemens Gamesa will install a prototype of its larger rotor 14-15MW turbine in 2022.
The German-Spanish company said the turbine, which features a rotor of 236 metres, up from the original 222-metre configuration, will go up at the Danish national test centre at Osterild.
The 12-236 DD unit offers an increase in annual energy production of 30%, compared to the 11-200 DD machine, said the company.
Siemens Gamesa plans for the new larger rotor machine were first reported by subscriber-only reNEWS in September.
A prototype of the 14-222 machine has been installed and is due to start up by the year-end.
The new variant remains unchanged in all other aspects than the 222-metre rotor unit.
“Extending on the proven offshore direct drive track record, the SG 14-236 DD is based on Siemens Gamesa’s deep understanding and expertise gained over five product generations since the platform was launched in 2011,” said Siemens Gamesa.
“Key components such as safety systems, hub and tower concepts, operations and maintenance solutions, along with a strong, qualified supply chain form the basis of the new offshore wind turbine.”
The turbine has been selected by Vattenfall for the 3.8GW Norfolk complex off the east UK coast, subject to CfD award and a final investment decision.
“The Siemens Gamesa–Vattenfall partnership has been fruitful for a great number of years across numerous markets. With this Nominated Preferred Supplier agreement for the Norfolk projects, we aim to add another 3.6 GW to our joint portfolio,” said Marc Becker, chief executive of the turbine maker’s offshore division.
“Developing an even larger rotor for our flagship offshore wind turbine is an example of how we are always seeking to innovate and improve. We can increase blade length and incorporate the solution on our existing design. We are committed to leading the offshore revolution, adding value to our customer’s projects and unlocking the potential of wind power.”
Vattenfall offshore boss Catrin Jung added: “We want to accelerate fossil free living in an affordable way for our customers, and we are always aiming for the right partners to make this happen. I am looking forward to the next steps on this grand journey.”