Facilities for the production of batteries for the company's electric cars are almost ready now, since construction began in September last year, the newspaper said.
The Shenzhen-based company's F3DM, China's first plug-in hybrid, made its debut last December.
Huizhou plant, the first eligible for mass production of lithium-ion batteries that are core technologies of BYD's electric cars, is seen as a key step in the company's electric car manufacturing.
The Wall Street Journal said that the company is aiming to sell its all-electric battery car in the U.S. next year, ahead of the original schedule, citing company Chairman Wang Chuanfu in Xi'an, Shaanxi Province, during an interview at a BYD factory there.