One of the most discussed topics nowadays is the one of the renewable and sustainable energy. The problem is that the energy and the energy sources which we use nowadays are in the risk of getting depleted. In fact it is estimated that in about 150 years these energy sources will be completely depleted. If we don’t find any solutions there will be big problems for us in the future. Luckily there are various options and alternatives when it comes to the energy sources. The most common and the most popular sources which are used nowadays are the wind power, solar power, and hydro power. These are the green earth’s energy sources.

These types of green earth’s energy sources are very beneficial. First of all they are clean which means that they do not pollute the atmosphere like the regular sources do and they are renewable which means that they can replenish without being the risk of getting depleted. The solar power is currently one of the most popular energy sources and that is because everyone has access to it. There will be some costs for installing the panels but other than that, everything else is free. If in the past, the costs for installing the solar panels were high, nowadays they are getting lower and lower which means that it’s becoming more and more accessible from a financial point of view.

There are two ways of obtaining power from the sun. The first method is the photovoltaic one through which the sun rays are taken, stored, and transformed into electricity. The other method works on the same principle by the fact that it takes and stores the sun rays but instead of turning them into electricity it uses them to heat the water which is then turned into electricity. The installation of the solar panels is not very difficult; in fact you can even do it yourself.

The wind powered energy is very popular as well but unlike the solar power, this one can’t be used everywhere. In order to be able to install the wind turbines the wind must have a certain speed otherwise they would not be able to generate energy. The wind power is currently the most expensive method of obtaining energy but in the same time it is the cleanest because it does not cause any disturbances to the environment.

The hydro power has existed for very long periods of time and it seems that it will continue to exist in the future. The hydro power is used at very large scales through dams and hydro facilities. As you can imagine, the hydro power can only be used in the areas where the water is in abundance and where it has the required power in order to be exploited.