国家电网
Electric utility State Grid Corporation of China planned to build over 2,351 electric-charging and battery-swap stations by 2016. These would have had 220,000 charging poles, but they did not indicate how many, if any, of them would have been battery-swap stations. The director of the State Grid smart grid research center commented "The construction of a large-scale charging station costs 20 to 30 million yuan ($3.05-4.57 million) and a small-scale one costs less than 10 million yuan, but it costs more than 100 million yuan to build a battery-swap station."