There are many renewable energy sources in the world such as the Sun, Wind, geothermal heat, tides, and biomass which can be utilized in better ways so as to produce continuous energy for our daily use. These renewable resources of energy will never run out if utilized wisely and do not pose any threat to the environment in the process of producing energy. Solar energy, hydroelectric energy and the energy produced using biomass along with other forms of renewable energy resources constitute about 16 per cent of the total consumption of energy.
Many people and industries are depending on these naturally replenishing sources of energy for their use and almost 10 per cent out of the 16 per cent renewable energy consumption comes from traditional biomass that is mostly used by households, while hydroelectric energy bags 3.4 per cent. The good news is that more and more organizations and individuals are opting for this kind of energy and the usage of these renewable sources of energy is increasing rapidly. According to recent statistics, worldwide consumption of wind power is growing swiftly at 30 per cent annually and it constitutes to 238,000 megawatts.
Let us take a look at some of the sources of energy that are renewable and that will never run out.
Solar energy is the energy that the Earth receives every year from the sun. The received energy is about 300,000,000,000,000,000,000,000 kJ and this is the actual source for most of the energy that is renewable and this energy is the cause behind the winds and waves.
Some of this energy is utilized by the plants in the process of photosynthesis. So it can be claimed that the Sun alone is the ultimate source of the energy resources mostly available to us and this includes even the fossil fuels.
The Earth’s crust has natural heat that is converted and utilized in the form of Geothermal energy. The temperature is 70,000° at core of the Earth. Even the rocks that are not too far from the surface of the Earth and are at 1 Km are about 500° C. There are even some hot water reservoirs below the earth’s surface that are being utilized for generating energy. Even the geothermal energy is a natural one and will never run out and is also renewable. Even the cost of running is very low when compared to other forms of energy. It can also be non-polluting.
The Earth absorbs some radiation when it is exposed to the Sun’s heat and the ground that is heated will in turn warms the air in the atmosphere which creates convection currents. This irregular heating of surface of the Earth causes the winds that can be used for producing renewable energy by using windmills and wind turbines.
There is kinetic energy in the flowing rivers which is collected and used to produce Hydroelectric power. It is the method where the pressure or energy generated by falling water through turbines is converted into electricity for daily use.
Generally for producing this kind of electricity a dam is built across rivers and the water is allowed to flow in a controlled manner through the turbines which will generate electricity.