For the first time in about 30 years new nuclear power plants are going to be built in the USA, in Georgia at an existing powwr station. The Westinghouse AP1000 is a new design descibed in the site below:

http://www.ap1000.westinghousenuclear.com/ap1000_imeo.html

The 1156 MWe plants cost $2-3 billion each. (For comparison, the transmission lines to the electricity generating wind turbine farms in Texas are estimated to cost as much as $6 billion, and the wind power source has an availability of about 16% to [optomistically] 30% of the time.)