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In an active solar
system, sunlight generates electricity with the aid of a solar module
consisting of many photovoltaic cells also known as PV cells. These cells
are commonly made of silicon and small amounts of boron and phosphorus. Most PV systems consist of two or more modules mounted on
your roof, the ground, a pole, or a special tracking device that follows
the sun across the sky from sunrise to sunset.
When sunlight hits a
PV module, it causes the production of tiny electrical currents in each
solar cell. These currents combine to produce a much larger electrical
in this manner is used in your home. Extra electricity produced by your
panels is stored in one of two manners.
1. Transmitted and
into the utilities (the "grid").
2. Transmitted to
batteries for your later use.
homeowners with an important decision to be made: Do you store your
electricity with batteries, called a stand-alone system, or do you feed it
into the grid, called a grid-tied system?
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