In essence, Tesla's global power grid was designed to "pump" the planet with electricity which would intermingle with the natural telluric currents that move throughout the Earth's crust and oceans. At the same time, towers like the one at Wardenclyffe would fling columns of raw energy skyward into the electricity-friendly ionosphere fifty miles up. To tap into this energy conduit, customers' homes would be equipped with a buried ground connection and a relatively small spherical antenna on the roof, thereby creating a low-resistance path to close the giant Earth-ionosphere circuit.
0_0 we should build another one!