Today we are facing a serious problem with our environment. We have quite literally ravaged our natural resources so much so that they are in danger of exhaustion. Apart from falling short of energy sources, all our use of fossil fuels and combustible fuels has led to an increase in pollution levels and acute global warming.
This poses a problem not only for the environment but also to us humans. With a shortage of fuels and energy resources there has been a sharp rises in their prices. This has led to astronomical bills for gas which simply serve to shock at the end of every month.
What is the solution to this problem?
The solution to these energy and environmental problems lies in solar energy. Solar energy is a clean source of energy, meaning that using it doesn’t emit any harmful by products. Solar energy is also a freely available energy source which is found is large quantities around the world. The only problem that one faces with solar energy is the issue of harnessing it correctly. Solar energy has a lot of potential if only it is utilised correctly. If used well, solar energy is able to meet the energy demands of the entire planet several times over.
So how does one harness this solar energy? You can use solar energy effectively by using a solar power unit.
A solar power unit is basically a combination of several components which together convert raw solar energy into solar power which is electricity. If you want to get some independence from the utility grid or want to go off it completely you will need to install a solar power unit in your house.
A solar power unit is typically fitted onto the roof of the house facing the south direction so as to maximise the absorption of the sun, an essential feature in generating solar power. A solar power unit is made of several essential components like solar panels, photovoltaic cells, inverter, batteries, etc.
When sunlight hits the solar panels and PV cells, some of it is absorbed by the silicon in the cells. Here the photons free the electrons which move in one direction producing a direct current (DC). This direct current flows into the inverter where it is converted into a 120 volt alternate current (AC), which is required to run home appliances.
Solar power units are also fitted with batteries which store any excess energy that is produced so that it can be used later.
Solar power units can be of any size and magnitude. They can be very big to meet the energy needs of an entire household, or they can be made to fit in to garden lighting fixtures. Solar power units can also be made as small as to fit into wrist watches and calculators.
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