INNWIND.EU was a very large EU project that ended in 2017. The project aimed at conceptual design of beyond-state-of-the-art 10-20 MW offshore wind turbines and hardware demonstrators of their critical components. The project has developed several innovative rotor designs, drivetrain components, and fixed and floating substructures that greatly reduce the Levelized Cost of Energy (LCoE) for 10-20 MW offshore wind turbines.
The INNWIND.EU consortium consists of large wind turbine manufacturers, certification bodies, consulting companies, research institutions and leading universities. An assessment of the entire wind turbine with different innovations has been made at the 10 MW and 20 MW scales by applying performance indicators and a comprehensive cost model developed in the project. Moving from conventional 5 MW offshore turbines to light-weight 10 MW- 20 MW scale allows a reduction of up to in levelized cost of electricity (LCOE) due to the larger turbine size along with the use of an efficient light-weight rotor and the shift from traditional three-stage geared drive trains to a medium speed drive. Significant further reduction of LCOE is achieved for both 10 MW and 20 MW designs, by the advanced concepts developed in INNWIND.EU. An overall LCOE reduction of more than 30% has been estimated by combining the different innovations developed in the project.
TNO has contributed to the develpoment a number of promising innovations, such as: