The glass pieces are made of ‘Dye Sensitised Solar Cells’ which use the properties of colour to create an electrical current—just like photosynthesis in plants. Similarly to the various shades of green chlorophyll absorbing light, the coloured window panes harness energy. That energy can then be used to power small appliances; a USB port in the window ledge can charge a standard smart phone in about seven hours.
if replicated on a larger scale, say over the vast colorful facades of churches, or in schools, the Current Window could provide clean energy in a uniquely beautiful form on a much larger scale.
Complete article at Inhabitat.