Renewable Energy Advantages And Disadvantages

Since the beginning of the 20th century, temperatures have risen in many areas all over the world. This happened because of the increase of the atmospheric levels of greenhouse gases. Some experts argue that the rising levels of atmospheric greenhouse gases are a result of human activities such as burning fossil fuels. These increases cause dangerous climate changes such as global warming, loss of sea ice, stronger storms, and more droughts.

On the other hand, other experts argue that greenhouse gas emissions caused by human beings are too small to change the earth climate. They also stated that the planet is able of absorbing those increases. They argued that the rise of temperatures might be a result from natural processes such as changing in the sun heat and ocean currents. (Martin I. Hoffers, 2010)

For many years, people used to get their energy from using fossil fuels. Fossil fuels

We finally reached to other sources of energy, which we call "renewable sources" such as the solar power, the wind power and the wave power. One advantage of the renewable energy is that it will never end. Renewable energy is cheap because it is derived from natural materials. Renewable energy produces little or no wastes so it does not have bad effects on the environment.

Renewable energy has some disadvantages. Renewable sources do not provide too much energy as other fuels. This may mean that we have to use less amount of energy or build more energy factories. Another disadvantage of renewable energy is that it relies on the weather for its source of power. We need wind to make windmills work, and we need clear skies to collect solar heat to generate electricity. Therefore, we can say that renewable sources of energy are the best when we consider their effects on the climate. (Kristin Shrader-Frechet TE,