Designed by Kyuho Song & Boa Oh, the Window Socket is a portable solar-powered electrical socket that affixes to a window and harnesses solar energy through a built-in solar panel. It is designed to be as intuitive as possible, and can be used in an apartment, on a ship or inside a car – or anywhere with access to sunlight. The socket stores excess energy in an internal 1000mAh battery, which is enough to charge a mobile phone. Once charged it can be taken off the window and carried anywhere while in use – including on the move. Simple and elegant! Too bad it is still concept now.