OSAKA -- A senior energy policy adviser to U.S. President George W. Bush said Thursday that any proposal submitted by the U.S. as an alternative to the Kyoto Protocol would rely on technology and market mechanisms to forge reductions in greenhouse gas emissions.

William Martin, chairman of the energy security group of the Council on Foreign Relations, also said that America's efforts to deregulate the energy market are still at an experimental stage.

"Bush's energy policy would have more of an impact on reducing (carbon dioxide) gases than (former Vice President Al) Gore's plan, because it makes more use of nuclear power and natural gas," he said.