I am not asserting that a QEG can produce more energy than it consumes. However, it appears that when a QEG reaches “resonance” it does generate electricity (i.e., numerous light bulbs wired to the QEG begin glowing).
A geophysicist named Marvin Herndon has proposed that the center of Earth is a sphere of uranium, originally 8 miles in diameter and now 5 miles in diameter, and that the uranium sphere functions as a natural nuclear reactor. If he is correct, that reactor would be generating an enormous amount of heat, causing the uranium sphere to cyclically expand, loose heat, and contract. If Earth’s outer core is made of iron, and if the iron core expands and contracts as it spins through the Sun’s magnetic field and gravity field, those processes might generate a resonance that, like a QEG, produces an electric current and a magnetic field. So I think it is fair to ask, “Is Earth a natural example of a QEG?”