With most electric vehicles parked at work or home all day, you may wonder whether you’ll save that much by having one. But what if someone told you they are actually big batteries on wheels that could earn you some money? Surplus energy in electric vehicles (EVs) can be sold back to the grid instead of being stored, and this could be used to power millions of households when they need it most, which makes particular sense amid a global energy crisis. With cars and vans parked for an average of 23 hours a day, the potential is great.
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