Cost of construction (about $2-6 billion per reactor) has long hindered nuclear power development, so orders for new plants in the U.S. may only be placed if the new reactor designs can provide an example of dramatically reduced construction costs. Nuclear energy holds great promise as an environmental technology that would allow us to reduce our unsustainable consumption of fossil fuels, use less land and other resources, and produce fewer greenhouse gases. However, in order for the industry to reach its full potential, we must find a way to reduce construction costs, address public health and environmental safety issues, and solve the weighty problem of waste disposal. Full integration of cost, show that nuclear is approximately equal in cost to coal $/kw. However, the "final solution" high level waste disposal cost has not been fully developed. Maybe this is it in a nut shell.
