This April 2007 photograph, released by the Tennessee Valley Authority, shows the cooling tower of the single operating reactor at the Watts Bar Nuclear Plant in Spring City, Tenn. The proposed construction of a reactor in Missouri, the first of a second wave of nuclear facilities in 2009, has been put on hold because of the $6 billion price tag, a barrier likely to plague every upcoming nuclear project. AP Photo logo AP Photo 7 months ago

This April 2007 photograph, released by the Tennessee Valley Authority, shows the cooling tower of the single operating reactor at the Watts Bar Nuclear Plant in Spring City, Tenn. The proposed construction of a reactor in Missouri, the first of a second wave of nuclear facilities in 2009, has been put on hold because of the $6 billion price tag, a barrier likely to plague every upcoming nuclear project.