>>14373518Drill a hole through the center of the earth.
Make the hole a vacuum.
Coil of wire around the vacuum hole.
Drop magnet down hole.
Harvest energy until harmonic motion is over.
Repeat.
That works.
But your thing?
No.
That's retarded. Except...
If you make the ends each a differential coil, attached to free floating pylons...
You could directly harvest the rotational energy of the planet, but that would eventually slow the planet down, and the voltage may be ridiculously high, but the current would be very small.