A New Zealand company has just demonstrated its wireless technology for sending solar energy collected in space back to Earth. However, the firm imagines transmitting the renewable energy collected on Earth throughout the Globe, thanks to a network of satellites.
L’THISTHISthe European Space Agency, wishes to develop theEnergyEnergy solar in space. the electric currentelectric current then it would be sent to Earth, and would be available day and night. It is in this context that the New Zealand company Emrod demonstrated its wireless electricity transmission technology to ESA.
The current prototype uses antennas measuring 1.92 meters to transmit and receive power. The energy is transmitted in the form of electromagnetic waves in the ISM (industrial, scientific and medical) frequency bands, close to Wi-Fi, it is a beam directed between two points that lets little radiation escape. For their demonstration, the antennas were separated by a distance of 36 meters, but they have already tested more than 200 meters.
Presentation of wireless energy transmission technology. (In English, turn on automatic subtitle translation.) © Emrod
Transmit electricity by satellite
While Emrod’s transmission system could well be used to send power harvested in space back to Earth, that’s not the company’s long-term vision. Its founder, Greg Kushnir, imagines instead a electrical networkelectrical network global wireless network transmitted by satellites orbitorbit low, 100 kilometers above sea level. At this height, the antennas should be 30 to 40 meters. With current technology, Greg Kushnir estimates he could achieve 60-70% efficiency, but by 2040-2050 he hopes to be closer to 80-85%, better than some wired networks.
Its objective is to completely decouple the production of renewable energy from its use. With a satellite system, it would be possible to install solar panels on the DesertDesert and send the electricity produced to the other side of the world. In this way it would be possible to harness solar energy 24 hours a day, and isolated places could receive electricity without being connected to a power grid. The company plans to start commercializing its backhaul technology by 2024.