Caltech claims to have beamed energy to Earth from satellite for the first time
Researchers at a US university claim to have beamed energy from a satellite in orbit to a detector on Earth, showing that harvesting energy from solar panels in space is technically possible.
Known as the Space Solar Power Demonstrator , the satellite is the first technology prototype from Caltech's Space Solar Power Project to actually make it into orbit. The business end of the SSPD-1 satellite is MAPLE, or Microwave Array for Power-transfer Low-orbit Experiment. This technology is described as an array of flexible, lightweight microwave power transmitters driven by custom electronic chips to direct a beam of energy to wherever it is needed.
In this case, the transmitter array uses precise timing control to dynamically focus the power selectively on the desired location using the coherent addition of electromagnetic waves, according to Caltech, so that the majority of the energy transmitted is focused on the desired target location.
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