What Are Renewable and Non Renewable Energy Sources
There is a lot of talk these days about investing in renewable sources of energy. What exactly is a source that is renewable and non renewable?
Non Renewable Energy Sources: For thousands of years man has been using firewood for almost all his energy sources. The supply was endless as long as the industrial revolution did not hit the world. However, the demand for firewood began to increase exponentially with the industrial revolution because all industries now needed sources of energy. What is more, the increasing longevity and productivity in turn created a population growth that further accelerated this demand for energy sources to drive the society, economy, and industry.
Coal came in handy at this time, and again the supply looked endless. Soon oil and gas also came into use, and the supply looked endless. However, people started to have a critical look and evaluation of these four sources, namely wood, coal, oil, and gas in the twentieth century when the sources of energy started to fail in keeping with the increasing demand. They realized that all the sources mentioned above are non-renewable, and that only those nations that control these sources now will be able to ensure political stability and technological development of their country. So much so that massive political and military battles were triggered over the energy sources.
Wood ceased to be a major industrial source of energy a long time ago. If the population and industrial progress increases at the present rate, then the known reserves of coal might last two centuries while the known reserves of petrol might not last even one century. Thus attention was drawn to sources that can be renewed so that they supply a practically endless source of energy.
Renewable Sources Of Energy: The easiest and cheapest source of energy is the sun that practically drives the whole earth with its plants and animal kingdom. The total energy consumed by the industry in one year might not exceed the total energy received by the earth in one second. Thus sun is practically and endless source of energy, and any gadget or device that can harness this energy for daily and industrial usage would be a renewable source of energy.
Dams are another source of renewable energy because rain is a cyclic phenomenon. A vast amount of electricity is produced worldwide via hydroelectric generators. Windmills that use winds to drive huge turbo-fans to generate energy also is a renewable source because nothing is consumed in that process.
The Current Problems: A source of energy also needs to be economically attractive. If domestic electricity is suddenly made ten times as costly as it is today, most of us would switch off the gadgets that we take for granted. On the other hand, if electricity were suddenly made ten times cheaper than what is is today, most of us would load our house with additional electricity-run gadgets.
The problem with renewable sources of energy is that their cost at present is not economically attractive. Of course, the rates are falling by the year, but it would take many more years of research and financial input before the renewable sources of energy compete on par in cost with the currently popular non renewable sources of energy.
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