Rather than causing widespread blackouts or increasing the cost of electricity, the actual change may be more of an evolution than an extinction。 EVs could usher in several significant changes to the grid that make it more distributed, more flexible, and smarter。
Sales of electric vehicles are growing fast. The Edison Electric Institute that up to seven million EVs could be on Americans roads by 2025, up from a little over half a million in 2016, with continued sales of 1.2 million per year. That represents around 3% of the 258 million cars and light trucks expected to be registered in the U.S. in 2025.
, approximately 4.4 to 5.5 million charging ports, including Level 1 and Level 2 chargers in homes and workplaces and Level 3 fast chargers in public charging stations, will be needed by 2025.
The increased demand EVs will place on the grid will be enormous. A single electric vehicle can draw as much power as three new houses. Rapid chargers, in particular, draw very large loads. Utilities theoretically have the excess generation capacity to power around 75% of America’s vehicles if they were EVs. But if those EVs charge around the same time, especially during times of overall peak demand, utilities won’t be able to meet the demand.