What is solar electricity? It is the electricity produced by a photovoltaic (PV) cell or better known as a solar cell. Solar cells are actually semiconductors which are what transistors and integrated circuits are made of, the devices that make up our computers, TVs, ipods and just about every other electronic device we have. Solar cells produce electricity when the sun shines on them.
Solar cells come in many sizes and shapes. They are often connected together to form solar cell modules? that may be up to several feet long and a few feet wide.
These modules can be combined and connected to form solar cell arrays of different sizes and power output.
Solar cells already play an important part in our lives. Solar cell systems provide power for items such as calculators, watches, and satellites to name just a few. Many road and traffic signs are now powered by solar cells because many times solar power is the least expensive form of electricity for these tasks.
If you happen to live in a place where utility-generated power (electricity from the power company) is either unavailable or too costly to hook up to (because of the price of extending power lines) then stand-alone solar cell systems are often best.
Stand-alone solar cell systems have several advantages that make them
suitable for these jobs. First, they produce energy where and when it
is needed. Second, small systems are easy to transport and install.
And solar cells (PV modules) only require an occasional inspection and