There are many ways to transmit energy wirelessly, solar energy is one. A high frequency voltage of millions of volts is obtained through a "Tesla coil", and an "amplification transmitter" (now called a high-power high-frequency transmission line resonance transformer) is used for wireless transmission.
This will cause a lot of loss, and finally can receive only a little bit, Tesla used to do this experiment to use the power of the entire city and only a few kilometers away to light a lamp. Tesla mentioned in a congressional hearing that he can already unleash powerful power anywhere at any time. About whether the Tunguska Big Bang is related to the Tesla experiment