Ko, D.; Jung, J.-S.; Lee, B.W., and Yoon, J.-S., 2023. Hydraulic experiment on the effect of wave reduction due to installation of marine solar power plants. In: Lee, J.L.; Lee, H.; Min, B.I.; Chang, J.-I.; Cho, G.T.; Yoon, J.-S., and Lee, J. (eds.), Multidisciplinary Approaches to Coastal and Marine Management. Journal of Coastal Research, Special Issue No. 116, pp. 11-15. Charlotte (North Carolina), ISSN 0749-0208.

A floating solar power plant is a renewable hybrid facility that combines solar energy and coastal technology, and there has recently been an increased need for solar energy generation to respond to climate change. Solar power generation projects using floats are currently being promoted in dams, reservoirs, and coastal areas, mainly in urban areas with high population densities. Floating solar power has the advantage of achieving higher efficiency than land-based solar power on the surface, where a cooling effect occurs due to the characteristics of the module element. However, when installed in coastal areas, it is exposed to environments such as high waves and wind speeds compared to a reservoir, so it is necessary to consider the behavior of floating solar power plants for offshore environmental factors at the design stage. This study quantitatively analyzed the wave reduction effect of concrete and Poly-Ethylene (PE) type floating breakwaters through hydraulic experiments conducted at the Rural Research Institute in Korea Rural Community Corporation. The model for the hydraulic experiment was produced in a 1/12 scale by the Froude similarity law. The results showed that the average transmission coefficient of waves on the concrete floating breakwater was 0.6 whereas that of waves on the PE was 0.96, indicating that the performance of the concrete floating breakwater was more excellent than the PE type. In general, floating breakwaters have a good effect of wave reduction when the draft depth is greater than the water depth, so it is judged that the wave reduction effect will occur when a PE type breakwater with a large draft is applied or when installed in low water depth conditions.