"Tesla saw that the world around us is brimming with “free” energy, and was adamant about finding a way to harness it for the betterment of humanity"
https://teslasciencecenter.org/history/tower/
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"Stick an antenna up in the air, the higher the better, and wire it to one side of a capacitor, the other going to a good earth ground, and the potential difference will then charge the capacitor."
"the electric Potential that exists between the elevated plate (plus) and the ground (minus), energy builds up in the capacitor, and, after “a suitable time interval,” the accumulated energy will “manifest itself in a powerful discharge” that can do work"
"Tesla’s intent was to condense the energy trapped between the earth and its upper atmosphere and to transform it into an electric current."
https://www.nuenergy.org/nikola-tesla-radiant-energy-system/
"a large dome of conductive metals on top, and an iron root system 300 feet into the earth"
https://www.scientianews.org/articles/nikola-tesla%2C-wireless-electricity%2C-and-the-failure-of-wardenclyffe-tower