Representatives from more than 150 countries are holding a series of meetings on a new global climate treaty which they hope will become an official agreement in Copenhagen in December to replace the Kyoto Protocol that expires in 2012.

But South Korea's president, Lee Myung-bak, has vowed to make green energy profitable by the year 2015, and has already initiated ambitious plans that have drawn international praise.

Al Jazeera's Steve Chao reports.