What are Photovoltaic Systems?
A solar photovoltaic system (or PV system) converts sunlight into electricity through the use of solar panels. This is done without creating any air or water pollution, offering us a way to generate a power source that is clean, quiet, and extremely dependable. PV systems are made up of cells that directly convert light energy into electricity. The process in which these cells work directly produces electricity from sunlight. They are often called solar cells because their source comes from the sun.
Two separate layers of semiconductor material, one positive and one negative, make up PV cells. Photons are absorbed from semiconductor atoms when light enters the PV cell, which in effect frees the electrons from the cells negative layer and allows it to feed back through the positive layer, which then produces electric currents.
A solar photovoltaic system draw power like any other electric generated system, but the equipment used to get the desired effect is different. A sophisticated body of electrical codes and standards guide the operation of the PV systems, allowing for proper control, distribution, and storing of energy once the system generates its power from sunlight.
Advantages and disadvantages of photovoltaic systems
While mainly advantageous, PV systems have a few disadvantages which should also be considered. Here a some pros and cons of photovoltaic systems.
•Electricity that is provided by the solar cells is silent and very clean. Dependant only on sunshine, they do not release anything harmful to the environment and do not endanger any human or animal health.
•PV systems are visually unobtrusive and are very quiet when operating.
•Solar energy is a completely renewable resource and does not need to be imported from anywhere else, thereby reducing environmental impacts that occur when associated with transporting by vehicles.
•Solar energy only produces, and does not deplete its source of energy.
•PV systems can be designed to any size specifications depending on energy requirements, allowing for enlargement or movement of the system should the energy needs change. Essentially, a homeowner can add modules to their PV system as their energy usage grows.
•While toxic chemicals are used in the production process, effects are minimal and produce a relatively minor impact on the environment. These situations can be avoided with proper recycling and disposal of chemicals.
•As a result of the cost required to convert the efficiencies of equipment and the manufacturing of PV devices, solar energy can be a little more expensive to produce than other energy sources. However, as conversion efficiencies increase, the cost will be much more competitive with conventional fuel sources.
•While depending on the sun for its power source, solar facilities may not be able to produce any power at times, which to lead to energy shortages if too much energy is consumed in one particular region.
No matter how you weigh the pros and cons, solar energy is one of the best renewable energy resources that we have at our disposal and should be used to every advantage.