HOHHOT - Shenhua Group, China's largest coal producer, said Thursday that it would invest 515.2 billion yuan ($78.4 billion) on business expansion in the next five years leading up to 2015.

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The company will add an additional 200 million tonnes in coal production capacity, raising the annual output to over 600 million tonnes in 2015, it said in a statement.

Additionally, it will add 1,500 km of railway lines to reach 3,300 km of lines in operation and increase port cargo handling capacity by 100 million tonnes to 230 million tonnes.

Shenhua will also add 30 million kw of power generation capacity to have a total capacity of 70 million kw.

Additionally, it will build four large coal chemical bases in Inner Mongolia, Shaanxi, Shanxi and Xinjiang in the north and northwest of the country.