Up front, of course, is the challenge of finding an acceptable way to store spent fuel and radioactive waste. If this problem can be resolved and if some of the long-deferred research and development efforts to make nuclear power more economical were to bear fruit, the potential for nuclear power could doubtless be enlarged.
The remainder of our domestic energy production comes from a variety of renewable energy sources, the most prominent of which are hydroelectric power from dams and the energy generated through the recycling of waste and byproducts from industry and agriculture.