| Photovoltaic solar panels are panels that collect | | | | connections, batteries and power conditioning |
| energy from the sun and convert the energy into | | | | equipment. The batteries are used for the storing |
| electricity. Solar panels are generally placed on | | | | of solar energy so the power source produces |
| rooftops to have direct access to sunlight. The | | | | electricity when the sun is not shining. |
| solar cells absorb the sun's energy during the day, | | | | There are many items that a PV system is a |
| and it is used to generate electricity for your | | | | power source for. Some of the smaller items |
| home or business. Solar cells can also be joined | | | | powered by solar power are wristwatches and |
| into electric energy storage to be used to | | | | calculators. Other items that can be powered |
| generate electricity for nighttime hours. The | | | | through this energy source are appliances, Solar |
| advantage of using solar is that it is a method of | | | | Water Pumping System, Path Way Light and |
| harnessing renewable energy that is clean and | | | | communication satellites. In recent year’s |
| green. Generally speaking, there is initially a hefty | | | | traffic and road signs have been powered by |
| investment to purchase and install solar panels, | | | | photovoltaic energy. This is a very inexpensive |
| but solar panels can pay for themselves in a | | | | form of electricity. |
| matter of months or years. | | | | To understand the physics of photovoltaic energy |
| More and more people are interested in both | | | | one must know that crystalline silicon is a very |
| saving money and saving the planet with | | | | common material used as a conductor. The |
| eco-friendly solar panels. Burning oil releases | | | | crystalline material is the chief material that |
| carbon dioxide and other greenhouse gases into | | | | converts the suns rays in to solar energy. The |
| the atmosphere, not to mention the impact on | | | | solar energy is created at an atomic level. As the |
| the environment from dredging and obtaining oil or | | | | material captures the sun’s rays energy is |
| the risks of devastating oil spills when oil is | | | | converted into cells. These cells are used to |
| transported. The green advantages of solar | | | | generate electricity to be either used right away |
| panels are that solar energy, unlike oil, is a | | | | or stored for later use when there is a demand. |
| renewable resource. Solar energy is also | | | | Photovoltaic Devices : |
| non-polluting. The money saving advantages for | | | | There are several different semiconductor |
| individuals and businesses are that by using energy | | | | materials that Photovoltaic devices can be made |
| from the sun, it is easy to reduce the ongoing | | | | from. The devices can be put in different |
| and increasingly more and more expensive costs | | | | structures in order to get the optimal |
| of lighting, cooking, working, entertaining, heating | | | | performance of solar cells. The four basic |
| and cooling. With solar panels you can greatly | | | | photovoltaic devices are homojunction, |
| decrease or even eliminate monthly electric bills. | | | | multijunction, heterojunction and p-i-n/n-i-p. These |
| That's what everyone already knows. | | | | four devices are responsible for creating solar |
| Photovoltaic energy or a solar electric system | | | | power. |
| generates electricity naturally and efficiently. To | | | | Energy Payback Time for Photovoltaic |
| understand how photovoltaic power harnesses | | | | Technologies : |
| electricity one must first understand the basic | | | | The length of deployment that is required for a |
| underlying physics and the design of a | | | | photovoltaic system is measured by the length of |
| photovoltaic device. This is a fully functional | | | | energy payback time. This means that a |
| system that can be used as a renewable | | | | photovoltaic system must generate a total |
| resource in generating electric power. | | | | amount of energy that is equal to the amount of |
| Working of Solar Photo Voltaic Module | | | | energy that is used to produce the electricity. |
| Literally, photovoltaic is translated to mean | | | | According to engineer studies a low energy |
| light-electricity. This is exactly what photovoltaic | | | | payback time is found with a roof mounted |
| devices and materials do. These types of devices | | | | photovoltaic system. |
| and materials are responsible for converting light | | | | Energy payback time is valued according to three |
| energy into an electrical power resource. This | | | | different factors. The first factor is the amount |
| type of energy system was first developed in | | | | of illumination or sunlight the system receives. The |
| the year 1839. | | | | second factor is the way in which the |
| Solar cells or photovoltaic cells (PV cells) are | | | | photovoltaic system converts efficiency. The third |
| considered to be a device that produces | | | | factor deals with the type of manufacturing |
| electricity. Semiconductor material is what PV cells | | | | technology that is utilized to make solar or |
| are made from. The PV cells range in size from | | | | photovoltaic cells. |
| smaller than a postage stamp to several feet | | | | There are three approaches to the manufacturing |
| long. Different sized PV arrays can be connected | | | | of solar cells, commercially, according to |
| to modules in order to create power output. | | | | developments in manufacturing technology. The |
| The factors that determine how much electricity | | | | most popular approach to processing discrete cells |
| is generated depends on the consumer’s | | | | is by using silicon ingots in the form of wafers. |
| needs and the amount of sunlight that is made | | | | The conductors or ingots are what develops the |
| available in a specific location. A Photovoltaic | | | | highly intensive energy process. The conductors |
| system consists of mounting hardware, electrical | | | | are usually either multi or single crystalline. |