Molten Salt Reactors
http://www.world-nuclear.org/info/Current-and-Future-Generation/Molten-Salt-Reactors/
Updated 22 August 2015
The total levelized cost of electricity from the largest is projected to be competitive with natural gas.
MIT Technology Review
Safer Nuclear Power, at Half the Price
Transatomic is developing a new kind of molten-salt reactor designed to overcome the major barriers to nuclear power.
http://www.technologyreview.com/news/512321/safer-nuclear-power-at-half-the-price/
American Nuclear Society
http://www.ans.org/pubs/journals/nt/a_3281
The cost of electricity is estimated for a molten salt reactor based on evaluations at the Oak Ridge National Laboratory (ORNL) and compared to the ORNL pressurized water reactor and coal plant estimates of the same pre-1980 vintage plants. The results were 3.8, 4.1, and 4.2 ¢/kWh for the molten salt reactor, pressurized water reactor, and coal. Surprisingly, such cost estimates have never before been published for the molten salt reactor.
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These were the early estimates.