@kjj -

It's probable the extra energy comes from Zero Point Energy.
Energy in space was battering the atoms and effecting (the electrons orbital shifts) their movements
According to Robert S. Mulliken in noting anomolies in the Red Shift
Max Plank, Albert Einstein, Otto Stern, Walther Nernst recognized that this pervasive (Zero Point) energy was a universal phenomena and intrinsic to space.
Werner Heisenberg understood that Planck's Constant was actually the measurement of the uncertainty in position of subatomic particles. By 1962, it was realized that this uncertainty of position was caused by the battering from "the Zero Point Energy".
In 1987, Hal Puthoff showed that electrons stayed in their orbits and did not go either spinning out or spinning in due to expended energy precisely because of the energy they received from the Zero Point Energy.
Zero Point Energy is 10^95 ergs/cm^3
It has Permattivity, Evo (Absolute dielectric constant); Permiability, Uva (absolute magnetic constant); Intrinsic impedance, Z = {Evo/Uva}^1/3
Nope. Electrons are held in orbit by exchanging photons with the nucleus. There is no mystery about it. The photons involved are not part of the zero point field, they are (by definition) the excess photons above and beyond zero point levels. QED calculations on this match experimental data to as many decimal places as we are capable of calculating and measuring, which is quite a few.
I'm about as sympathetic a person as you'll ever find towards alternate physics and free energy investigation. But the current physics is not the result of a conspiracy or a mistake. It is correct in every way that we know how to look at it, and has resisted our every attempt to poke holes in it.