In a statement issued from Copenhagen, Duke chief executive Jim Rogers and ENN chairman Wang Yusuo, add their voices to the chorus: The US and China, as the world’s two largest emitters of greenhouse gasses, must cooperate for the United Nations Climate Change Conference to be a success.

Citing their own joint work on US solar project development, carbon capture and bio-energy, the executives say, “We believe that this type of cooperation will yield results faster and more economically for the tens of millions of customers who depend on our companies for energy.