In addition to what the other commenter said: from the description of OP, the teleportation is basically “magic”, ergo free potential energy (by moving objects from one place to another).
Create a large magnet in a generator that’s very tall, free transport the magnet up to the top, let it fall slowly creating electricity. It’s basically how hydro works: the sun “transports” water, in the form of clouds, to a higher point, gravity pulls it down, we use that to make energy.