RECTENNA – RF Power beamed at Earth

Although its only an idea at the moment,  a company certainly appears to be quite serious about harvesting energy from the sun in a very different way then your average solar panel.

“Solar cells, solar conversion devices, and nuclear power devices on a space power system generate Direct Current (DC) electricity, which is converted to a transmission frequency, such as radio, microwave and laser frequencies. For example, with Radio Frequency (RF) and microwaves, the generated electricity is converted to power through conversion devices, e.g. magnetrons, and focused by an antenna. The focused energy is directed to a receiver, and a receive antenna (“rectenna”) converts the power beam into DC electricity. The DC electricity is converted into Alternating Current (AC) electricity, which is transmitted to a power grid for distribution to users.”


Two-dimensional MoS2-enabled flexible rectenna for Wi-Fi-band wireless energy harvesting


Bill Brown, inventor of Rectenna, Wireless Power Pioneer


Professor Laithwaite : Magnetic River 1975