This is a window electric socket.

This is a solar use concept. It currently takes a charge for 5 to 8 hours to charge. Once charged it can be taken from the window and carried anywhere to deliver 10 hours of electricity.

It is reusable.

The Window Socket (click here) 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 pictures show the Window Socket on the window and the business side of the Window Socket with solar technology.

This technology allows a battery capacity to solar energy that is portable with long life usage.  

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.
Read more at http://www.yankodesign.com/2013/04/26/plug-it-on-the-window/#DDMMssaqmP0zRBgT.99