電気自動車を普及させた場合と天然ガス自動車を普及させた場合のCO₂排出量の比較

抄録

CO₂ emissions of natural gas are lower than gasoline by 20% or more. On the other hand, since the charging of the electric vehicle (EV) is carried out at night when the coal-fired power is fully operated, if the spread of EVs is suppressed, the surplus power can be adjusted by reducing the coal-fired power. When calculating CO₂ emissions from EPA's fuel and electricity consumption label value, CO₂ emissions from coal-fired power to charge EVs considerably exceed that from cars using natural gas. Technologies for generating methane from renewable energy have also been put to practical use, and natural gas vehicles (NGV) are suitable for the next generation environment-friendly cars.