This is an interesting video addressing an alternative to our existing nuclear energy. While I hope that Thorium as a fuel could be developed. Where Uranium as a fuel costs billions to build a plant (and about 20 years). Using Thorium as a fuel costs millions to build a plant and can be built in about two years.
This video demonstrates the size that the core would be.
This video demonstrates the scalability of the plants.
Another type of process that has be discounted is a cold fusion reactor ... name because the reactions occur at room temperature.