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 Solar electricity or photovoltaics (PV) is energy technology that converts light (photons) directly into electricity (voltage). A single solar cell when exposed to sunlight will produce .5 volts DC. A module, which is several solar cells tied together, can produce a DC circuit from 12 to 600 volts. PV modules can then be wired together to produce PV circuits (strings) of a variety of voltages. One or more strings wired together creates what is called a photovoltaic (PV) array. PV arrays are usually installed on rooftops but can be installed on special ground or pole mounting structures. For more output, modules are sometimes installed on a tracker - a mounting structure that moves to continually face the sun throughout the day.  The more sunlight solar modules receive, the more power they will produce. There must be nothing to shade the modules, especially during the prime sunlight hours of 9 am to 3 pm (Even a telephone line can greatly reduce the module’s power output.)  A charge controller regulates the voltage and current coming from the solar panels going into the rest of the PV system. Solar electricity can be used directly to run DC motors or it may be stored in batteries for later use. An inverter converts DC voltage instantly into AC voltage which can power common tools and appliances or be put back into the utility grid. View our recent Solar Electric (PV) projects >
*All electrical system wiring should be performed by competent electricians and should be in compliance with the National Electrical Code (NEC) and inspected by your local county/city electrical inspector. |
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