During this period, power stations using gas, biomass, other renewable energy sources and nuclear energy would produce more to fill the void, the group said in a joint position paper presented to the European Commission on Friday.

BBC: Coal-to-gas power shift 'to cut energy costs'

Environmental groups and many politicians in Washington insist that the U.S. must lead the effort to develop renewable energy sources, with wind, solar and biomass being the lead components.

FORBES: Magazine Article

He supports a national renewable energy standard that would require 20% of America's energy to be generated from renewable sources such as solar, wind and biomass.

FORBES: '08 Tracker: November