Total carbon dioxide emissions for fiscal year 2021 are 1,064 million tonnes.

Of this, half of the 185 million tons in the transportation sector, 800,000 tons, will be reduced by switching to electric vehicles because the efficiency of electric vehicles is twice that of fossil fuel vehicles. Half of the industrial sector's 373 million tons, or 186 million tons, will be reduced through the use of heat-generating units installed where heat is required. The energy conversion sector's 83.7 million tons will decrease as thermal power generation and oil refining will disappear.

Subtracting these 349.7 million tons of total emissions from the total emissions of 1,064 million tons, the remaining 714.3 million tons is equivalent to 1552.9 billion kWh of electricity, and in order to achieve carbon neutrality, this electricity must be added using renewable energy.

Additional electricity that can be generated from renewable energy sources include:

Heat generating unit power generation hot water supply system in all households and businesses, we can increase electricity generation by 1,151.2 billion kWh.

By installing solar power generation systems on the roofs and parking lots of every single home, public facility, factory, supermarket, convenience store, and even on the premises of airports, ports, and railway stations, we can increase electricity generation by more than 200 billion kWh.

Wind power generation is planned not only on land but also offshore, and can be increased to approximately 230 billion kWh.

With government subsidies, there are plans to double or triple geothermal power output from the current level (520,000 kW) by 2030, resulting in an increase of 9 billion kWh.

Hydroelectric power generation can increase electricity by building small-scale hydroelectric power plants across the country that can be installed on small rivers, such as the Matsukuma Small Hydroelectric Power Plant, which has a capacity of 30kW (annual power generation of 210,000 kWh) and was built in Yoshinogari Town, located in the eastern part of Saga Prefecture.

The amount of electricity that can be increased is more than 1,590.2 billion kWh, making it possible to achieve carbon neutrality.

"Quote":URL of copyrighted work

"Greenhouse gas emissions and removals for fiscal year 2021 (Reiwa 3) (final figures1)"

https://www.env.go.jp/content/000128750.pdf

" Matsukuma Small Hydroelectric Power Plant, the smallest in Japan "

https://q0.io/research/matsuguma_01/