But what if you fill your EVs batteries from power from your solar panels. Or from overnight power when demand is low, but base load power stations have to keep going whatever the demand? Or from a 100% renewable grid. This chart shows the numbers. Grey shows conventional ICEs, purple shows hybrids, yellow shows EVs. With a 100% green grid, EVs produce 1/4 to 1/3 of the life cycle emissions of an ICE car.