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If a large proportion of private vehicles were to convert to grid electricity it would increase the demand for generation and transmission, and consequent emissions. However, overall energy consumption and emissions would diminish because of the higher efficiency of EVs over the entire cycle. In the USA it has been estimated there is already nearly sufficient existing power plant and transmission infrastructure, assuming that most charging would occur overnight, using the most efficient off-peak  base load  sources. In the UK however, things are different. While National Grid's high-voltage electricity transmission system can currently manage the demand of 1 million electric cars, Steve Holliday (CEO National Grid PLC) said, "penetration up and above that becomes a real issue. Local distribution networks in cities like London may struggle to balance their grids if drivers choose to all plug in their cars at the same time." Charging stations BYD e6 A Sunwin electric bus in

Most large electric transport systems are powered by stationary sources of electricity that are directly connected to the vehicles through wires. Electric traction allows the use of  regenerative braking , in which the motors are used as brakes and become generators that transform the motion of, usually, a train into electrical power that is then fed back into the lines. This system is particularly advantageous in mountainous operations, as descending vehicles can produce a large portion of the power required for those ascending. This regenerative system is only viable if the system is large enough to utilise the power generated by descending vehicles. In the systems above, motion is provided by a  rotary  electric motor. However, it is possible to "unroll" the motor to drive directly against a special matched track. These  linear motors  are used in  maglev trains  which float above the rails supported by  magnetic levitation . This allows for almost no rolling resistance of

Electric vehicles Plug-in electric vehicle A plug-in electric vehicle (PEV) is any  motor vehicle  that can be recharged from any external source of electricity, such as  wall sockets , and the electricity stored in the  Rechargeable battery  packs drives or contributes to drive the wheels. PEV is a subcategory of electric vehicles that includes  all-electric or battery electric vehicles  (BEVs), plug-in hybrid vehicles, (PHEVs), and  electric vehicle conversions  of  hybrid electric vehicles  and conventional  internal combustion engine  vehicles. Cumulative global sales of highway-capable light-duty pure electric vehicles passed one million units in total, globally, in September 2016.Cumulative global sales of  plug-in cars and utility vans  totaled over 2 million by the end of 2016, of which 38% were sold in 2016, and the 3 million milestone was achieved in November 2017. As of January 2018, the world's top selling plug-in electric cars is the Nissan Leaf, with global sales of m

Electric vehicle From Wikipedia, the free encyclopedia Jump to navigation Jump to search Electric vehicles around the world  (from top left) An  electric vehicle  ( EV ) is a  vehicle  that uses one or more  electric motors  or  traction motors  for propulsion. An electric vehicle may be powered through a collector system by electricity from off-vehicle sources, or may be self-contained with a  battery ,  solar panels  or an  electric generator  to convert fuel to electricity. EVs include, but are not limited to, road and rail vehicles, surface and underwater vessels,  electric aircraft  and  electric spacecraft . EVs first came into existence in the mid-19th century, when electricity was among the preferred methods for motor vehicle propulsion, providing a level of comfort and ease of operation that could not be achieved by the gasoline cars of the time. Modern  internal combustion engines  have been the dominant propulsion method for  motor vehicles  for almost 100 years, but electri