It is perhaps obvious that renewable resources must have a higher share of the energy mix, but it is indisputable that increasing this share should not come at any price. The factors that influence the cost of wind energy are mainly the life-cycle costs, which include the overall wind turbine construction, operation and maintenance as well as the return on investment through the energy generated. Therefore reliability, serviceability and efficiency - as well as a compact wind turbine design - are the key factors to make a wind turbine competitive.
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