Essay On Sources Of Energy

There are four major types of renewable energy: solar, hydro, wind and geothermal energy.This paper will discuss advantages and disadvantages that renewable energy resource (RES) brings, as well as analysis the importance of RES to the world’s future.The use of renewable energy has many potential benefits, including human beings and environment.

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Efficient storage media such as batteries and fuel cells are keys for a renewable-powered grid.

If battery storage is added to the system, it can supply electricity even after the sun goes down or through several cloudy or stormy days (Pasolini 2012).

Although it is obvious to recognize the human as well as environmental advantages of utilizing renewable forms of energy, we must also consider some limiting sides from the energy.

The biggest disadvantage of renewable energy is that the cost of the energy is relatively higher than non-renewable energy.

Similarly, wind power energy relies on moving air and converts it into electricity without polluting the environment.

Therefore, it is obvious that the non-pollution or minimal impacts on environment are the positive advantages of renewable energy.According Global Wind Energy Council (GWEC) (2008) reported that turbine installation costs $ 47.5 billion; by contrast, we only have to spend a much smaller amount of money to build thermal power station about $ 2,25 billion (Shah 2011).He also pointed that other incidental costs such as maintenance costs and production costs cause price increasing.With the never-ending supply of renewables, we would feel secure when having abundant supply of energy to last our planet, our human race and our economies, for generations and ever.Khemani (2011) says: “As long as human life is there, there will be earth, sun, wind and water, and the energy from these sources will also be available as long as they are there”.Thirdly, another benefit of renewable energy is a diversified energy mix (Pasolini 2012).It is an important and necessary supplement for global energy security while fossil fuel sources are more and more running out.Together with the rapid growth of the world population, the limited ability to supply of non-renewable leads to energy demand on a rise especially in developing countries.This situation results in the risk of depletion of cheap fossil energy and environmental pollution as well as climate change.The initial costs of renewable energy still make many people ignore it completely when comparing it with fossil fuel on two aspects: total cost and over the same time period.For example, installation of solar energy water heater costs many times in comparison with a heater, so they decided to buy heaters for hot water solution.


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