oFFshore Wind Farms - Cowi

offshore Wind farm 7Site screening and feasibilitystudiesChart of the vessel traffic in the area ofthe Øresund.Screening processThe purpose of the screening process is toidentify sites where locations for offshorewind farms would be feasible and have theleast possible environmental impact onnature and humans. The following issueshave to be taken into consideration:››Wind energy resources››Grid connection››Hydrography››Environment and raw materials››Sea cables››Navigation››Visual impact.Conceptual designThe conceptual design phase aims at selecting the best suited technicalfoundation solution for each wind farm location and characteristics. A basis forthe economic assessment of an offshore wind power plant is established andthe costs are divided into:››Construction costs for foundations, wind turbines, power system and gridconnection››Operating and maintenance costs.Selected references››Screening of offshore sites in theØresund area in Denmark for300 - 400 MW offshore windfarms››Site identification for 100 MWoffshore wind farm in BohaiBay in China››Assessment of the potentialfor offshore wind farms alongthe Portuguese coast››Conceptual design of 300 MWoffshore wind farm in Øresundin Denmark››Identification of potentialoffshore wind farm in theDanish territorial waters››Development of wind farmlayout, wind power calculations,conceptual design offoundation structures andcable grid. In addition,estimate the total wind farmcost for two offshore areas inthe Øresund area in Denmarkand calculate the unit cost perkWh.Feasibility studyThe purpose of the feasibility study is to assess the economic feasibility of anoffshore project based on the conceptual design and the available wind energyresources. The results of the feasibility study include calculation of the productioncosts per kWh and assessment of economic and technical risks duringimplementation and operation.