Porsche has invested in building a rapid charging station to pave the way for electric cars

By the end of 2019, Porsche, a German car company, plans to build a nationwide, fast-charging network of 500 supercharging stations on U.S. dealerships and highways.

Zellmer, president of Porsche North America, said the 800-volt fast charging pile would help ease potential buyers ' "mileage anxiety" about electric vehicles. 80 % to 90 % of electric car owners charge their cars at home or at work, and they worry about the distance they drive. Therefore, for a journey with a mileage of more than 300 miles(about 480 kilometers), a fast charging station is necessary.

Electric car owners need to be prepared to pay for the use of fast charging stations that can complete 80 % of the charge in less than 20 minutes and replenish 250 miles(about 402 kilometers) of endurance. If dealers want to use charging time to attract customers, Zellmer said, they can choose to provide customers with fast charging for free.

The automaker's 189 U.S. dealers were required to install at least one fast charging pile at each location and equipped with batteries as buffers. Battery buffers, which store energy from the grid during high traffic, can quickly charge three cars in a row. Zellmer said that battery buffers are much cheaper than setting up systems to charge directly from the grid. He said the company had spent more than $1 million(about 6.27 million yuan) on installing six rapid charging piles at its U.S. headquarters in Atlanta.

Porsche is said to be in discussions with Charge-Point, the largest electric vehicle charging network in the United States, EVgo, a public electric vehicle, and Electric America, a wholly-owned US subsidiary of Volkswagen, over 300 other charging piles built at non-dealership locations. Porsche is also considering building charging stations at locations such as golf courses and hotels.

The page contains the contents of the machine translation.