The fourth Sino-U.S. Energy Policy Dialogue opened Sunday in the coastal city of Qingdao in east China's Shandong Province.

China and the U.S. have huge potentials to cooperate in developing wind, solar and nuclear power. Both countries shall hold responsibilities to develop more technologies and equipment to tackle the challenges of climate changes, said David Sandalow, assistant secretary for Policy and International Affairs at the Energy Department.

Zhang Yuqing, an official with China's National Energy Administration, said China is willing to learn advanced technologies of exploring gas. The consumption of gas has been growing by 20 percent every year since 2006.

The two countries signed a memorandum of understanding to launch the dialogue in 2004. The first forum was held in 2005 in the U.S.