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Stand-alone PV system or off-grid solar system operates independently of the electric utility grid (off-grid). They are most often used in remote rural areas where the electric grid does not reach. Or where the connection fees for access to the grid are higher than the cost of an alternative energy system. The DC power generated by these systems is stored in batteries. Converted to AC power for household or/and commercial use. These system are best suited for remote village and rural electrification projects, and provide a more affordable and reliable source of electricity. Typically a solar system design is customized by a solar professional to match the customers’ needs. Important factors are total electrical load, location, exposure and budget.
Remote homes and cabins, water pumping systems, livestock watering, telecommunications, RV’s, boats, sign lighting and traffic warming lights are just some of the places off-grid-solar and renewable energy are utilized. 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 relives you of dependency on the electrical utility, because the system provides all of power by itself. Due to this, off-grid system are generally larger than grid-tie systems. To be fully independent, a system must have a larger wind generator or array of solar panels. They have greater battery storage capacity than in applications where grid power is available. However, if done properly, living off-the-grid can save your thousands of Rupees over the life of the system.
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