SHANGHAI will begin building two more offshore wind farms in the East China Sea by early next year, officials said yesterday.

After completion, a total of 600,000 residents will use wind power across the city. Construction will begin later this year on a new wind farm near Donghai Bridge while construction on another near the Lingang area in the Pudong New Area will start in early 2014, an official with Third Harbor Engineering Co of China Communication Construction told a forum.

"A new jumbo windmill that will be the same height as a 50-story building will be used for the wind farm in Lingang," said Chen Danghui, vice president of Sinovel Wind Group Co, the maker of the windmill. Sinovel will make 17 such windmills, each with a capacity of 6 megawatts, and install them in the East China Sea.