There are many reasons to be off-the-grid, but typically off-grid (stand alone) solar electric systems are used in remote locations where connecting to the local utility grid is impossible or prohibitively expensive, in areas where grid power is inconsistent, or due to the appeal of an independent lifestyle. With an off-the-grid system, solar panels, a small wind turbine, a micro-hydro system, or a combination of these technologies and others, is used to supply all of the power a cabin, home or business needs. In some off-grid systems a home backup generator may also be included, to supply power when the renewable technologies can’t produce enough to meet demand.
Off-grid living completely relieves you of dependency on the electrical utility, because the system provides all of your power. Due to this, off-grid systems are generally larger than grid-ties. To be fully independent, a system must have a larger wind generator or array of solar panels, and greater battery storage capacity than in applications where grid power is available. However, if done properly, living off-the-grid can save you thousands of dollars over the life of the system.
