Wireless electricity transmission uses microwaves to transmit power without wires over long distances. Nikola Tesla pioneered this concept in the late 1800s with experiments transmitting power wirelessly. Modern techniques would involve converting power to microwaves at a transmission station, transmitting to satellites, and receiving at rectennas on Earth to convert back to electricity. While promising reliable power delivery anywhere, challenges include the massive size of receiving stations, high costs of hundreds of satellites, and potential interference with electronics.