Silicon solar cells provide only ~20% efficiency and are thick, heavy, and inflexible, and thin solar cells are lightweight and flexible, and are limited to ~15% efficiency. Arbell Energy has developed a thin film that has ~50% efficiency, thus increasing the possibility of greater reliance upon renewable energy rather than fossil fuels. This has been done through redefining NanoCrystal's PV architecture, fully utilizing NanoCrystal's inherent advantages for solar cell efficiency. Both the lightness of Arbell Energy's new technology and its increased efficiency enable previously unexplored applications for lightweight, high-efficiency solar cells, rendering renewable energy a more promising energy source.