Can the electricity grid support a large number of electric cars?

Electric cars help the grid, because in addition to using electricity, they can also serve also "batteries on wheels."

Thanks to smart charging systems, when an electric car is not charging, it can return the electrical energy stored in its battery to service the grid or charge when electricity prices are lower. These flexibility services – in countries where a regulatory system enabling these technologies is already in place – generate economic benefits not only for the grid operator, but also for end customers, whose electric cars can be charged when prices are lower and can feed energy back into the grid when prices are higher.

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