Kyuho Song and Boa Oh created the first solar-powered socket. One side holds a solar panel; the other has a cable through which you can charge devices. The Window Socket offers a neat way to harness solar energy and use it as a plug socket. So far we have seen solutions that act as a solar battery backup, but none as a direct plug-in. Simple in design, the plug just attaches to any window and does its job intuitively. The direct solar plug-in was designed to be universally compatible. Simply insert a two-prong plug and connect your device. While you stick the cup on the window, the mini-solar panels transfer power to the socket’s internal battery and plug just the same as you would do with a standard socket. The design allows for power in instances where outlets cannot be found. Long road trips, power outages, or going camping serve as a few perfect examples of when to use the window socket. Right now, the socket can store about 1,000 mAh.