Presentation Details
| GIS-Based Constraint Filtering for Agrivoltaic Site Screening in Japan Pawita Bunme, Takashi Oozeki. Renewable Energy Advanced Research Center, National Institute of Advanced Industrial Science and Tec, Koriyama, Japan |
Abstract
Due to the rapid expansion of photovoltaic (PV) systems in Japan has increased pressure on land use, especially in regions such as Fukushima where agriculture is important. The installation of conventional solar farms has raised concerns about food security, land-use conflict, and social acceptance. Agrivoltaic (APV), which allows PV systems and agriculture to be used on the same land, is considered a promising option. However, the share of APV in Japan is still low, partly due to the lack of spatial methods to identify suitable areas that balance crop production and energy generation. This study proposes a Geographic Information System (GIS)-based constraint filtering method for APV site screening in Koriyama City, Fukushima Prefecture. High-resolution of Japan-specific spatial datasets were used, including agricultural land-use polygons data and terrain information derived from a digital elevation model. A constraint filtering method was applied to exclude unsuitable areas based on factors such as land-use, terrain, and hazard-related conditions. The filtering process was applied across multiple spatial layers in a stepwise manner to demonstrate the reduction of candidate areas. The results show that the number of agricultural polygons was reduced from 100,354 to 58,176, which corresponds to a 42% reduction before further analysis using multi-criteria decision analysis (MCDA). This result indicates that constraint filtering can reduce the study area and improve the reliability of candidate APV locations. The proposed method provides a practical basis for APV site screening in Japan. Future work will include the development of an Analytic Hierarchy Process (AHP)-based suitability map to further evaluate candidate areas.
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No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
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