Yu Qingtai, Beijing's special representative for climate talks, suggested on 5 August that China may be willing to commit to the reduction of carbon emissions beyond 2012. He said China's only "quantified and measurable target" would be an aim to reduce energy consumption per unit of its gross domestic product by 20 percent on 2005 levels by 2010. Much of the emphasis for this change is to be on investment in renewable energy sources. This is evidenced by Beijing's plans to triple the use of renewable energy by 2010 from 2005 with renewable energy accounting for 4 percent of the city’s total consumption by next year and 6 percent by 2020.