helping the grid offset the inevitable vagaries of wind and solar power. After all, cars are idle most of the time and a large amount of battery power is unutilized.
Note: 1 gigatonne = 1 billion metric tons. Annual emissions less than zero reflect the removal of greenhouse gases from the atmosphere. Based on national policies and pledges as of May 2021, prior to new pledges made at the UN summit on climate change, COP26, in November 2021. GHG emissio...