Abstract
In this paper, the potential of regional-scale introduction of agrivoltaic systems (the technique to put up a pillar on agricultural land, and to install PV systems in upper space of the pillar continuing farming) was evaluated. Considering the difference of adaptability to the decrease of solar radiation under agrivoltaic systems between agricultural crops, the relationship between solar panel installation ratio and crop yield reduction ratio was formulated. In addition, the installation potential of power generation was calculated in consideration of limiting factors such as geographical condition, the capacity of the regional grid interconnection, and crop yield reduction in each municipality in Kanto. As a result, the maximal amount of agrivoltaic systems without limiting factors was 65.1 GW in rated capacity, 69,118 GWh / year in power generation amount. From the result of the introduction potential in consideration of the limiting factors, it was found that the capacity of the regional grid interconnection was the most critical limiting factor. Under the condition to maintain the crop yield in the whole region, it was found that when introduction priority of agricultural crops was set, the potential was maximized by restarting farming at the abandoned farmland within each prefecture. In addition, it was clearly shown that agrivoltaic systems had more potential than introduction of ordinary PV systems on conventional abandoned farmland.
