Japan's transport ministry plans to boost the use of solar power at the country's airports in a bid to reduce their carbon dioxide emissions to net zero.
A panel of experts set up by the ministry in March has been discussing ways to decarbonize Japan's airports.
NHK has learned that the ministry plans to increase the area of solar panels at airports and on nearby public land to 2,300 hectares, or 12 times the current level, by 2030.
This is expected to cut carbon dioxide emissions at airports by 1 million tons annually, reducing them to net zero.
The ministry also hopes to accelerate energy-saving efforts at airport facilities, as well as the switch to using electric vehicles.