Nuclear energy heats up presidential race

By Jeff Mason - Analysis

INDIANAPOLIS (Reuters) - John McCain embraces it. Barack Obama wants to address its flaws. Hillary Clinton is cautious but not opposed.

Nuclear power -- controversial in the United States and throughout much of the world -- is on the agenda of all three U.S. presidential candidates as they seek to diversify the country's energy mix and reduce dependence on foreign oil.

Interviews with top policy advisers to the three White House hopefuls reveal a varied approach to the technology that some observers see as a necessary answer to fighting climate change and others view as expensive and dangerous.

McCain, a Republican senator from Arizona who has wrapped up his party's nomination, is by far the most enthusiastic about the carbon-free fuel source, regularly calling for more nuclear power plants at campaign stops throughout the nation.

"I believe we are not going to reduce greenhouse gas emissions and become energy independent ... unless we use nuclear power and use it in great abundance," he said in North Carolina on Monday.

McCain adviser Douglas Holtz-Eakin said nuclear power faced an "uneven playing field" from years of political opposition.

"Sen. McCain would eliminate the political obstacles that hinder nuclear power, allow it to compete more effectively, and likely increase its share of the U.S. energy portfolio," he said.

Nuclear energy accounts for about 20 percent of U.S. electricity supply, a figure that could rise if regulations on carbon dioxide emissions are imposed, making greenhouse gas emission-free nuclear plants more attractive.