Organic 'solar trees', demonstrated at Expo 15 in Milan, Italy, give a glimpse of lightweight, flexible solar cells in action. Image credit - ARMOR/GerArchitektur
The future of solar energy
Today's silicon solar panels are an industry standard, but these rigid, heavy blocks may be shunted aside by plastic rivals – lightweight, flexible solar panels that could be printed and stuck onto buildings or placed in windows or cars, turning light into electricity in locations inaccessible to their heavier cousins.
