Session: 09-09-01 Hybrid Energy: Hybrid Marine Renewables

Submission Number: 181658

Assessment of Offshore Hybrid Wind-Wave Energy Resources Around Taiwan Based on Long-Term Observational Data 

With the rapid advancement of offshore renewable energy technologies, the integration of hybrid renewable energy systems has become a key development trend in the global energy transition. The surrounding seas of Taiwan, influenced by monsoonal circulation, the Kuroshio Current, and tidal dynamics, possess abundant wind and wave energy resources. Quantifying the spatial characteristics and complementarity of these resources has therefore become a critical task for strategic energy planning and marine spatial management. In this study, long-term datasets spanning 2008–2024 from Advanced Scatterometer (ASCAT) satellite observations and the ERA5 reanalysis provided by the European Centre for Medium-Range Weather Forecasts (ECMWF) were integrated to investigate the spatial distribution of wind and wave energy resources around Taiwan. Spatial interpolation techniques, including Inverse Distance Weighting (IDW) and Kriging, were employed to construct a hybrid wind-wave energy map for the region. The interpolated results were validated using in situ observations from offshore buoys and meteorological stations around Taiwan. The results indicate that the Taiwan Strait possesses substantial potential for both wind and wave energy exploitation. The mean wind power density exceeds 1 kW m⁻² at a 10 m height, while the average wave power reaches approximately 20 kW m⁻¹. In addition, the southeastern offshore waters near Pingtung, influenced by tidal forcing and long-period swells, exhibit a relatively higher wave energy density of about 24 kW m⁻¹. The findings provide a scientific basis for the site assessment and structural design of offshore hybrid energy platforms, thereby contributing to the enhancement of efficiency and feasibility in marine renewable energy development around Taiwan.

Presenting Author: Hsueh-Chu Hsu Department of Mechanical Engineering, National Taiwan University

Presenting Author Biography: H.C. Hsu is a master's student in the Department of Mechanical Engineering at National Taiwan University. His research focuses on offshore renewable energy resource assessment around Taiwan.

Authors:

Hsueh-Chu Hsu Department of Mechanical Engineering, National Taiwan University
Nan-You Lu Department of Mechanical Engineering, National Taiwan University