Israel’s Chakratec develops kinetic batteries with a mechanical flywheel to provide smart storage with unlimited charge/discharge cycles and no polluting chemicals. Chakratec has just won Ben-Gurion University’s Clean Technology Business Plan Competition. http://www.chakratec.com/

http://aabgu.org/bgu-negev-cleantech-initiative/ https://www.youtube.com/watch?v=rNfqvAewRr0