If we observe our environment which is the most abundant and free resource available to us, the answer is solar energy. Hence it is a natural alternative to fossil fuels like oil, gas and coal. The energy from the fossil fuels and water is used to generate electricity at large. The scarcity and wastage of these resources have made them expensive to use. Therefore solar energy is the low cost and safe alternative to the other fuels. There are many reasons to use solar energy like expensive fossils and bio fuels, global warming and development in solar energy utilization.

Expensive Bio Fuels
Solar energy is a renewable energy source which is relatively inexpensive. The reason for its being getting famous is its availability and abundance. While in the case of other bio fuels like oil and gas which are limited to the ownership of few countries this natural resource is free. These countries have monopoly over these resources and it is over their will that the prices of these biofuel like coal and oil fluctuate in the international market. Hence if we work on developing solar energy power plants we can save sufficient amount of tax imposed on importing oil and other biofuels.  Development of power house using bio fuels is also an expensive project. All one need is to deploy solar grids. However the solar power project requires minimum initial investment. The deployment of solar grids is scaleable because the more you deploy solar grids the more you produce electricity.

Global warming and solar energy
The use of fuels like oil and gas in homes, cars and industry has brought us to the problem of global warming. The extreme production of harmful gases like carbon monoxide has destroyed the ozone layer hence we receive both the harmful and harmless sunrays. The extreme pollution in our planet has disturbed the smooth working of our echo system. This has resulted in lower rainfalls and dries whether. The use of sun to support industrial processes can help us overcome the worst situation of global warming.  It can also help us stop destroying our fertile land from the harmful waste resulting from industrial processes. The governments all over the world are supporting the solar power projects especially in the under developed countries. The south Asian countries like Pakistan, India and Bangladesh are planning major solar power projects to utilize the beneficial solar energy.

Development and research in the field of alternative fuels
The research in the field of alternative fuels has helped scientist to discover renewable energy projects. One such solar project which was initiated in the red sea recently was the experiment of solar ponds. The red is rich in salt content. It is deep and contains heaps of salt. This presence of salt is utilized to store solar heat in it. The temperature in lower salt layers reaches to 90 degrees Celsius which is sufficient to process heat and water. Such developments and more in this field are economical this is another reason why we should switch to alternative energy sources. The solar energy is helpful in generating tax free electricity at home that is why now end users have deployed batteries which support solar electricity generation. Solar energy is of many uses like water treatments, cooking and ventilation. The awareness about using solar cookers in rural areas has also helped to decrease the cut down of trees for cooking purposes. The solar vehicles do not emit harmful gases like other vehicles. hence all in all the profusion  and simplicity to use the solar energy has gave us innumerable reasons to use it as a renewable energy source alone or in combination with wind and geothermal energy sources.