SHIJIAZHUANG, April 10 (Xinhua) -- China's benchmark power coal price rises by one yuan (15 U.S. cents) per tonne during the past week.

The Bohai-Rim Steam-Coal Price Index (BSPI), a gauge of coal prices in northern China's major ports, stood at 579 yuan per tonne on Wednesday, according to Qinhuangdao Ocean Shipping Coal Trading Market Co. Ltd.