In terms of charging stations for electric vehicles, Wang Xiaokun, an analyst at domestic commodities consultancy Sublime China Information Co Ltd, said some manufacturers might be interested in cooperating with the State Grid.

State Grid gets Australian permit for investment

Sinopecis allowing in private investors

China's government has encouraged the use of electric vehicles as a way to reduce pollution.

According to the China Association of Automobile Manufacturers, about 14,000 electric cars and 3,300 plug-in hybrids were sold in 2013.

The government aims at reaching 500,000 plug-in hybrid and electric vehicles by next year.

Tesla Motors Inc has been working with some Chinese companies to build charging stations, the US company's founder Elon Musk said on a recent visit to China.

The government continues to open up State-owned enterprises to private investment. Sinopec announced in February it will sell up to 30 percent of its retail oil business to private investors.

PetroChina this month said it will sell 100 percent of its pipeline assets valued at $6.3 billion to private investors.

The assets include the First and Second West-East Gas Pipelines, which carry natural gas from central Asian countries and China's energy-rich region of Xinjiang to the nation's eastern cities.