Local Chinese governments have also undertaken moves of their own to put the central authority's preferential policies on new-energy vehicles into action.

Earlier this month, Beijing's development and reform commission set up a service price standard for charging electric cars, setting the price for every kilowatt of electricity the new-energy vehicle uses to no more than 15 percent of one liter of gasoline with a minimum octane rating of 92.

The service rate will go into effect from June 1 and operators of charging stations for electric autos will collect the fees. The city commission said that fees at charging stations will be adjusted to market prices on Jan 1, 2020.

The Beijing government agency said it hopes the service price standard will attract more capital to the construction of new-energy vehicle infrastructure.