A bit different from my main topic area, but as solar was my route into the clean energy sector, back in 2007, I've always believed it will come to both dominate electricity production globally, and to become more versatile, as costs come down, and other materials and uses are found.  

We all know we have a growing global population, and that food supply, and food miles, are a problem.  This looks like a great innovation, applicable from the back garden, to large scale production. Viva Solar!