Moss Voltaics - The Institute for Advanced Architecture of Catalonia
Moss Voltaics is a green façade system that aims to explore how moss might be used as a source of renewable energy. Find out more
Unfortunatly I can only find this one thesis project. The output voltage is enough to consider integrating with green walls. If we as a whole society would switch gears we would be able to build green archtecture in the blink of an eye.
Moss walls would be so nice.
I think you would have to be very careful to make sure the roots didn't erode the wall.