I’m very familiar with that graph. I mean “Free energy” as in very cheap to produce. ;))
This is a totally new “science.” I don’t claim to fully know what’s going on. No one does! What “we” do know is that different combinations of Hydrogen and Nickel are yielding large amounts of energy, transmutation into Copper, and disputed amounts of Beta decay.
If hydrogen could fuse with nickel, why doesn't this reaction take place in the Sun?