If you’re planing to produce electricity off-the-grid you may need to think about a way to store electricity until the time you actually need it. The first thing that comes to mind is batteries. Unfortunately deep cycle batteries are expensive and like many other batteries their power reduces with time. I think that flywheels have a great potential of becoming the short-time (6h-24h) energy storage devices of future. I’m quite exited about building a prototype based on the Top toy and “Bedini motor”.