and if you don t have an expensive battery to store any surplus energy as it s captured, you end up feeding it back to the grid for a fraction of the market price. one alternative is you can plug the arc directly into your electric car if you have one. i found another solo entrepreneur in london s notting hill. this prototype features a unique cost effective way to attach solar film to regular blinds, so owners of flats and garages can take advantage, too. because to date solar power has been for the rich, and there s not been a system or product in place where it can go on any building. my company s aim is all around the democratisation of solar, so any window can now become a solar panel. david s applied for a patent for his creation and will take it first to spain, where these types of blinds are more common.