The industry ministry estimates that ¥81 trillion in investment will be necessary to achieve Japan’s goal of cutting emissions 20 percent by 2030 compared to 2010 levels.
Estimates presented Tuesday to a subcommittee of the Advisory Committee for Natural Resources and Energy, which advises the industry minister, put the requisite investment at ¥32 trillion by households, ¥20 trillion by the transportation sector, ¥19 trillion for office, store and other business operations, and ¥10 trillion by the industrial sector.
The ministry expects massive expenditures will be needed for such measures as improving home insulation and introducing electric vehicles.
The committee has also mapped out three scenarios based Japan’s dependence on renewable energies — between 25 and 30 percent, 30 percent and 35 percent of total energy supply — if the 20 percent reduction target is to be achieved.