[(Title)] Electricity demand from electric cars could be too high.

As many as 36m electric cars could be on UK roads by 2040 – putting a major strain on the electricity grid, experts predict.

专家预测，到2040年，英国公路上可能有多达3600万辆电动汽车，给电网带来很大压力。

The Government is promoting electric cars over combustion engines under plans to slash greenhouse gas emissions.

政府正在推行减少温室气体排放的计划。

It wants to ban new conventional cars by 2040 as well as have new homes and street lights fitted with electric car charging points.

它希望到2040年禁止新的常规汽车，并装备有电动汽车充电点的新住宅和街灯。

National Grid says the number of electric vehicles on UK roads could swell to 11m by 2030 and 36m by 2040.

国家电网说，到2030年，英国公路上的电动汽车数量可能会达到1100万辆，到2040年可能达到3600万辆。

There are currently around 130,000.

目前约有13万辆。

That is likely to increase peak demand electricity by about 8GW – roughly the output of 2.5 nuclear power stations.

这将使高峰用电需求增加大约8千瓦——大约相当于2.5核电站的产量。

However, that is less than previous forecasts as experts predict cars will be charged at off-peak times.

然而，正如专家们预测汽车将在非高峰期充电，实际数字会低于以往的预测。

Drivers can also sell electricity from their cars back to the grid when not being used.

司机在不用车时，也可以把电力从汽车上卖回电网。

The National Grid yesterday predicted autonomous cars will be on roads by the late 2020s.

国家电网昨日预测，到2020年代末，自动汽车将会在公路上行驶。