Caltech researchers have come up with an innovative lightweight tile assembly that combines collection of solar energy, conversion to microwaves and transmission of the power via an antenna. The modular design can be combined into an array enabling transmission of power where it is needed in space. Combining these three functionalities into scalable modular units is a significant development toward realization of space based solar power.
Check out the AIAA paper here: http://www.its.caltech.edu/~sslab/PUBLICATIONS/Gdoutos%20et%20al%202018.pdf
