If the voltage potential of our atmosphere is a few hundred thousand volts, then something similar should be true for the solar system as a whole. The electric potential between the inner and outer solar system should be enormous. An object moving from the outer to the inner regions, or visa versa, should experience electrical stress similar to that experienced by meteorites entering our atmosphere.
Comets, with their oblong orbits around our Sun, should display evidence of electrical activity, which is exactly what they do.
Long before comets enter regions warm enough to melt water, they develop long tails rich in water. But comets aren’t icy bodies. They are rocks. Space probes that have observed comets up close, and even landed on them, have found no source of water, only barren rock and dust.
The water associated with comets appear to be synthesized at their surfaces.
Water observed in the tails of comets is synthesized through electrolysis of metal oxides and other complex chemicals. The solar wind is rich in protons that readily react with oxygen to produce water.