I heard about this.
If this scientific reaction could be done on a larger scale of elements from the periodic table then energy wouldn't be a problem.
That's pretty hard, even the sun doesn't rely on that, over 99% of the energy from the sun is from Hydrogen --> Helium.
When the sun starts doing Helium --> Beryllium --> Carbon --> Oxygen it will become a red giant.
So doing anything other than Hydrogen fusion is out of the picture.