Hi Arnold
Thanks for the message. Loving the shared interest in net zero
My project is an ESP controlled lightweight solar tracking reflector (basically a solar light with a telescopic umbrella opening up a flat reflective mylar sheet, embarrassingly similar to bits from poundland!). It should be very low cost to mass produce, but can survive worse weather and last longer than the current expensive reflectors you see around a solar tower power station in the desert - as the ESP can see any bad weather approaching online and close the reflector before it hits.
Iβd love to hear more about your microwave project, sounds fascinating Feel free to give me a call on 07599 663 800
Cheers
Vince