The Hurun Research Institute has released a new ranking that shows who are the biggest Chinese private companies in the energy sector. Power battery giant CATL, valued at RMB 1.04 trillion, is the most valuable private company in China's energy industry.

This is the first time Hurun has released the list, where Chinese private companies are defined as non-state-owned enterprises headquartered in China.

New energy vehicle (NEV) maker BYD ranked second on the list, with a value of RMB 700 billion.

Extended-range electric vehicle (EREV) maker Li Auto ranked third, with a value of RMB 300 billion.

Battery electric vehicle (BEV) maker Nio ranked eighth on the list, with a value of RMB 140 billion.

Battery maker Eve Energy ranked No. 9 with a value of RMB 110 billion, while lithium producer Ganfeng Lithium ranked No. 12 with RMB 100 billion.

Xpeng is ranked 15th with a value of RMB 94 billion and Zeekr is ranked 17th with a value of RMB 90 billion.

The list examines Chinese private companies with an energy-related business that accounts for more than 50 percent of their business, and ranks them by market capitalization or valuation.

Among the top 100 private Chinese energy companies, there are 29 battery makers, and CATL is worth as much as the other 28 peers combined, according to Hurun's report.

Twelve companies related to NEVs made the list, including electric vehicles and electric two-wheelers.