MIC Toyokoro Airfield

Primarily economic reasons. The owning company, Mitsuhiro Industrial Co., Ltd. (MIC), redeveloped the land for a more profitable purpose by converting the airfield into a large-scale solar power plant. A general decline in the demand for fixed-wing agricultural aviation in Japan may have also been a contributing factor to the decision.

The site has been completely transformed and is now the location of the 'MIC Toyokoro Mega Solar Power Plant' (MIC豊頃メガソーラー発電所). The entire length of the former runway and its surrounding grounds are covered by thousands of solar panels. The original hangar building on the northwest side of the property appears to still be standing, likely repurposed for maintenance or operations of the solar facility.

MIC Toyokoro Airfield was a private airfield established around 1990. It was owned and operated by Mitsuhiro Industrial Co., Ltd. (MIC), a company specializing in agricultural and construction machinery. Located in the heart of the agriculturally rich Tokachi region of Hokkaido, its primary function was to support agricultural aviation, such as crop dusting and spraying. It also facilitated private general aviation and business flights for the owning company. The facility consisted of a single paved runway, approximately 800 meters long and 25 meters wide, along with at least one hangar. It was never a public airport and did not handle commercial passenger or cargo traffic.

Effectively zero. The land has been fully and permanently repurposed with the construction of a large solar power generation facility. Re-establishing an airfield would require the complete removal of the solar plant and a full reconstruction of aviation infrastructure, which is economically unfeasible. There are no known plans or prospects for reopening the airfield.