Solar power is possible due to the conversion of sunlight into electricity by using photovoltaic or indirectly by using concentrated solar power. Concentrated solar power systems are the ones that use lenses or mirrors to focus a large area of sunlight into a small beam, whereas the photovoltaic converts light in to electric current using the Photovoltaic Effect. Photovoltaic is used to power small and medium sized applications, like off-grid homes powered by a photovoltaic array. Photovoltaic is relatively inexpensive source of electrical energy. The concentrated heat is used as a heat source for a conventional power plant, and there are also many technologies like Parabolic Trough, Solar Power Tower etc. Photovoltaic systems use no fuel, and the modules used in this typically last 25-40 years and the cost of installation is the only cost, since very less maintenance is required.

There are various varieties of solar power system solutions available in the market and various brands are coming up with their product. Some of these solutions are:

Off Grid Solar Power Systems:
In this system the sunlight falling on the solar panels is used to generate DC electricity which is fed in to a regulator that controls the amount of charge. Deep cycle batteries are charged by this generated electricity. Getting the right system for your needs is vital. Many brands customize complete systems according to the location and specific application. Small off-grid systems used in homes may give a monthly output up to 212kWh, whereas Medium home off-grid may give an output of 424kWh, the outputs vary from the size of the solar panels and the photovoltaic arrays used and the location of the panels.

Grid Tie Solar Power Systems:
Grid Tie Solar Electric Systems generate electricity for homes or businesses and route the excess produced power to the electricity utility grid for compensation from the utility company. It is more efficient to be hooked to the utility grid because off grid systems must store the energy. The utility company keeps track of the kilowatts that have been utilized on an hourly basis. When extra energy is produced, the energy meter goes backwards, and the users earn some credits. The savings depend on the usage and variations in the weather. A solar System of 2,600 watts may give an output of up to 353kWh with a minimum of 5 hours of Sun, whereas a Solar System of 10,400 watts may give an output of up to 1,414kWh.

Solar Battery Back-up systems
Millions of homes are left without power in times of natural disasters. In times like these the battery backups come in handy. The emergency backup power packages keep your home and businesses up and running when there is no grid power. Battery backup power can also be added to an existing grid-tied solar power system. These can be used indoors because these are safe and silent. They provide uninterrupted power in times of power shortages. There is minimal maintenance required and can be hardwired into subpanel or can be used with integrating outlets. It is expandable and can also be used with existing generators.

Hybrid Solar and Wind Home Power Systems
This type of solar power solution is used as a backup in tomes of power cuts and shortages in times of natural disasters and situations like these. A sophisticated inverter allows your grid-tied solar panels and wind turbine to charge a battery bank even when the grid goes down. This system is designed to power 120-volt circuits only. In this system you can select the appliances that you want powered during an emergency power outages, and then choose the correct battery bank size.

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