In the of-the-grid systems, electricity produced by the PV solar panels can be temporarily stored or used at once. Outdoor lights, street lamps in Europe commonly use off-the-grid PV systems. Also this type of system is increasing in popularity for boats, camper vans and garden conservatories. With PV of-the-grid system, you can say goodbye to connection problems and noisy generators. Off-the-grid systems are economical solution for the developing countries and remote regions that are not connected to the main electrical grid.