[tankenmate]

My point wasn't "there's no free energy", of course the energy has to come from somewhere. But transmission lines have parasitic loss anyway. My point is that rather than that energy being lost to the environment generally it can be directed to a specific circuit and used. Obviously though this is a much much lower amount of energy than can be "actively" harvested.

[ThrowawayTestr]

Any amount of harvesting increases losses.