Offshore Wind

"Wind power is the world’s leading source of renewable electricity, excluding hydropower.
Offshore wind capacity is growing quickly, however, expanding nearly 6-fold since 2006.
United Kingdom had 2,500 megawatts of offshore wind, 1/2 half of the world total, and also has the largest offshore wind farm under construction: 1,000 megawatts.
China ranks 4th behind the United Kingdom, Denmark, and Belgium, with 260 megawatts, but the government’s goal is 30,000 megawatts of offshore capacity by 2020. This could generate the equivalent of roughly 1/5 of China’s current residential electricity consumption.                        

Source: earth-policy  scribd