Energy Blind by jingwon go from korea
designer's own words:
Blinds are used on windows to block the sunlight. Given that blinds are exposed to the sunlight for a long time, they can produce a great amount of green energy as solar heat generators. In hot summertime, Energy Blind not only block the sunlight but also supply electricity to cool down room temperature.
Energy Blind 1
Energy Blind 2
Energy Blind 3