Cost analysis of offshore wind energy is dominated by "economy of scale". An increase of the turbine size reduces the cost of energy as the relative costs of the offshore operations reduce.
The objective of this WP will be to identify major technological and economic barriers associated with the development of future wind turbine technology, which is based on up scaling of present day, conventional configurations. By development and use of scaling trends supported by experienced engineering judgment, the work will involve the dimensioning and cost analysis of a very large wind turbine design of 20MW rating. A critical assessment of the upscale design will be undertaken in order to determine the engineering feasibility, cost implications, investment risks and overall fundamental barriers, as concerns technology, design tools and concept, which might prevent such large scale wind turbines.
Based on a systematic analysis of the growth in the scale of wind turbines over the last two decades, this task will involve the development of scaling trends to characterize key design parameters as a function of turbine size. Such parameters will include the mass, capacity and cost of major components as well as the complete turbine system, cost per rated kW, cost per rotor swept area etc. The scaling trends will be used to outline a 20 MW design. An evaluation of this design may reveal barriers. These barriers may be related to the cost of energy, the manufacturing process, the installation process, the structural integrity, etc. An iterative procedure is foreseen in which new designs will be proposed to cope with the barriers.
The final resulting of the WP1B4 work package will describe the up scaling and identification of major barriers, including an outline design and a cost analysis of a 20 MW wind turbine. The technical and fundamental barriers affecting the development of very large wind turbines will be identified and the developments needed to overcome these barriers will be formulated.
Ing. L.G.J. Janssen
Energy Centre of the Netherlands (ECN)
P.O. Box 1
1755 ZG Petten
Tel: +31/224 56 4115