Finally, I was able to finish on time my entry for this year's Atomhawk Solarpunk contest. https://atomhawk.com/solarpunk
My idea for this year’s Solarpunk contest theme mainly revolves around the concept of a plant microbial fuel cell (PMFC), a biological cell that converts the solar energy into bioelectricity with an aid of the microbes at the rhizosphere region of plant. This concept seems to be an emergent source of sustainable energy. I also thought of a solar energy generating plant/area merged with a park kind of concept to make it a little bit unique and interesting. You can also see on the piece, that pavements are also equipped with solar panels.
This concept is based on this scientific facts: https://newatlas.com/plant-microbial-fuel-cell/25163/