Space-based solar power

A view from inside MAPLE, which will demonstrate wireless power transmission in space. This angle shows both the array of flexible, lightweight microwave power transmitters (right side), and the two receivers that they will transmit power to (left side). The top receiver is receiving power in this picture, and it is lit by this wirelessly transmitted power.
A Caltech demonstration proves the ability to beam power wirelessly in space
A view from inside MAPLE, which will demonstrate wireless power transmission in space. This angle
Space-Based Solar Power can work for the Earth and the Moon
via European Space Agency Space-Based Solar Power can work for the Earth and the Moon
Simplified scheme of a side-pumped solar laser system with four off-axis parabolic mirrors: (left) front view and (right) side view; (inset) laser head is mounted at the common center point of the four off-axis parabolic mirrors. Credit: Boutaka, Liang, and Abdelhamid Kellou, doi 10.1117/1.JPE.12.038002.
Space-based solar power generation just got a lot closer with new four-mirror pumping solar-powered lasers
Simplified scheme of a side-pumped solar laser system with four off-axis parabolic mirrors: (left) front
Harvesting Energy from Electromagnetic Waves

Among the most important is space solar power, an emerging critical technology that can significantly