A new study puts the generation costs for power from new nuclear plants at 25 to 30 cents per kilowatt-hour — triple current U.S. electricity rates.
see: http://climateprogress.org/2009/01/05/study-cost-risks-new-nuclear-power-plants/ rel=no follow
Current CSP costs (still substantially less than nuclear):
Vinod Khosla gives current CSP at 16 cents kWh (and note PV far higher at 22.4 cents kW/hr – see slide 124 onwards at http://www.slideshare.net/guest76ed37/khosla92507 rel=no follow
Also, good summary of costs can be found here: puts current CSP at 13 – 17 cents kWh: http://peakenergy.blogspot.com/2008/04/concentrating-on-important-things-solar.html/ rel=no follow
Makes CSP look very attractive indeed at 11 cents per kWh by 2011 (cf Ausra & Bright Source CSP plants signed up with PG&E in South West America) – compatible with gas prices, and estimated to reduce to 4-6 cents per kWhr by 2020. Nuclear costs unlikely to reduce, but instead are on an upward trajectory.