Mikuni Airfield

Economic reasons and land redevelopment. The airfield was closed to allow for the construction of a large-scale solar power plant. The site was repurposed as part of Japan's push for renewable energy following the introduction of a feed-in tariff system.

The site has been completely redeveloped and is now the location of the SoftBank Sakai Solar Park (ソフトバンク堺ソーラーパーク), a large-scale photovoltaic power plant. Commercial operations for the solar park began in July 2014. The layout of the solar panels on the site clearly follows the outline of the former main runway and taxiways, preserving a faint echo of its aviation past visible from satellite imagery.

The airfield has a two-fold history. It was originally constructed during World War II as the Mikuni Naval Airfield (三国海軍航空基地) for the Imperial Japanese Navy and was used for pilot training. After the war, it was eventually converted into a civilian airfield. In its final decades of operation, it served the general aviation community as a private/club airfield, primarily handling ultralight aircraft, motor gliders, and other recreational flying activities. It was a significant local site for aviation enthusiasts in the Hokuriku region.

None. The site has been permanently and completely converted for industrial energy generation. All aviation infrastructure, including the runway, has been removed and replaced by the solar park, making any prospect of reopening as an airfield virtually impossible.