Sustainability is the most precious gift that we can give to our future generations. Solar energy
can be directed both actively and passively. The main benefit of solar energy is that it does not produce any pollutants and is the cleanest source of energy.
As the solar energy is free of cost and found in abundance, it can be harnessed with the technology
like photo-voltaic, artificial photosynthesis, etc.,
In Solar Power Technology solar energy is converted into electric energy. In this method large amount of sun beams are focused in small beam using mirrors or lenses.
In order to install PV panels one must consider some facts about the costing:
¨ How much roof area is required
¨ Consider electricity bill
¨ Number of hours sun is available
¨ How much you can afford to invest in offsetting energy bill
Factors that Affect The costing
There are many factors that contribute to the costing of the installation of solar panels for home power.
The type and quality of the panel is the main concern. Manufacturers especially cost the product according to its longevity and efficiency. Location also matters for the final price of the project.
In various countries like United States and Boston government offer financial incentives to make buying and installing systems more affordable. Costing also depend on the geographical location.
Costing is higher in those countries where availability of source of energy is less than those where
there is ample amount of sun rays.
Working of Solar Panels
Solar Panels are basically connected series of PV cells made of silicon which convert sunlight energy into direct light energy. After it inverter is used to convert this direct energy into alternate current. Moreover panel efficiency is dependent on the size of array of panels. You must be wondering why silicon is used in making such cells, it is because silicon is a semiconductor, so that when the sun’s radiation hits silicon atom energy gets absorbed and cause emission of electron, due to which many number of electrons gets emitted inside the conductor and an electric current is produced. These are capable of being upto 20% efficient.
Countries using Solar panels for home power
There are many countries which are using this solar panel technology from a long and time and very efficiently. Countries like Germany, China, Italy, Japan, United States, Australia etc.,
There is a little bit variation depending on the kind of panel you are using. Usually a solar panel
produces around 200 watts of power. More efficient the panel higher is their costing. A typical installation may be about 5-kw array, or 25 panels. Depending on the household appliances you use at home there is variation. On average home uses 950 kw a month with little variations. The usage of power also depends on the day and night time. The maximum power rating is written on the back of your system.
In the end of this article three most important things one must keep in his mind is that, solar panels for home power usually depends on three things. They are:
¨ Amount of sunlight hitting the panel
¨ Size of the panel
¨ Efficiency of solar cells inside.