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Wave energy resource assessment at Hvide Sande on the west coast of Denmark

Abstract

The wave power potential in the North Sea was studied in several publications for different locations. This paper estimates the wave power potential at a specific location, namely, near the town of Hvide Sande, located on the western coast of Denmark. To assess the wave energy resource at Hvide Sande, a hindcast model utilizing SWAN (Simulating WAves Nearshore) simulation tool is developed. The model is calibrated and validated with the 8-years data from a wave measurement buoy located close to Hvide Sande. Significant wave heights from simulations show a high correlation with the buoy data, and the mean wave periods are in good agreement with the measurements. Utilizing 30-years ERA5 reanalysis wind and wave data provided by the European Centre for Medium-range Weather Forecasts, the model was used to obtain the sea states at four sites. These sites are chosen to fulfil the placement requirements of two wave energy converter concepts: Seabased and ECO Wave Power. The average annual power density is found from 17.3 kW/m to 18.32 kW/m for offshore locations and 10.8 kW/m for the breakwater location. The obtained results on wave power potential and the time series of sea states during the 30years period will be used for the (micro-) grid studies for the town of Hvide Sande.