Building costs rise at US nuclear sites

The Associated PressLICENSING DELAYS: In this Feb. 15 file photo, the Unit 3 nuclear island where a new nuclear reactor will sit is seen before a visit by U.S. Secretary of Energy Secretary Steven Chu at the Vogtle nuclear power plant in Waynesboro, Ga. Vogtle  initially estimated to cost $14 b...

The Associated PressWATTS BAR: In this April 2007 file photo provided by the Tennessee Valley Authority, steam rises from the cooling tower of the single operating reactor at the Watts Bar Nuclear Plant in Spring City, Tenn.  The Tennessee Valley Authority has concluded that construction of the...