Abstract
With the first tidal stream energy arrays already operational, the issue of the impact of one array on other nearby farms has arisen. It is expected that, when located in one single channel, two arrays upstream/downstream will cause a reduction in the power production of both farms, while two farms side-by-side will benefit from each other. However, this impact has not been quantified yet. This paper analyzes the interactions between three proposed farms in Naru Strait (Nagasaki Prefecture, Japan). Two farms are located side-by-side, while the third one is at approximately 3 km downstream/upstream. Several case studies are evaluated, differing in installed capacity per array or farm layout. Results show the influence of location, layout, and installed capacity on the variations in power production caused by nearby farms, with percentual values ranging between -0.90% and +4.76%. This paper demonstrate the need of a regional strategic planning for tidal stream energy exploitation if resource optimization is prioritized.
https://ror.org/058h74p94 
