What are Alternative Energy Sources?
Alternative energy encompasses all those things that do not consume fossil fuel. They are widely available and environment friendly. They cause little or almost no pollution. There have been several alternative energy projects running in various countries to reduce our dependence on traditional fossil fuels. There are many impressive options that you can take into consideration. Here you will learn more about alternative energy sources that you can take into consideration. Solar Energy Solar is the first energy source in the world. It was in use much earlier before humans even learn how to light a fire. Many living things are dependent on solar energy from plants, aquatic life, and animals. Solar is mostly used in generating light and heat. The solar energy coming down to the planet is affected by the orbital path of the sun and its variations within the galaxy. In addition, it is affected by activity taking place in space and in the sun. It was this energy that is believed to have been responsible for the breaking of ice during the ice age, which creates the separation of lands and sea. Solar energy is one of the alternative energy sources that is used most widely across the globe. About 70% of the sunlight gets reflected back into space and we have only 30% of sunlight to meet up our energy demands. While solar energy is used for producing solar energy, it is also used for drying clothes, used by plants during the process of photosynthesis, and also used by human beings during winter seasons to make their body temperature warm. Solar energy can be extracted either by Solar Thermal or using Photovoltaic (PV) Cells. There are two kinds of solar energy the active solar energy and passive solar energy. Passive solar energy basically uses duration, position, and sun’s rays intensity to its advantage in heating a particular area. It also uses it to induce airflow from an area to the next. Active solar energy uses electrical technology and mechanical technology like collection panels in capturing, converting, and storing energy for future use. Solar energy does not create any pollution and is widely used by many countries. It is a renewable source of power since the sun will continue to produce sunlight all the years. Solar panels, which are required to harness this energy can be used for a long time and require little or no maintenance. Solar energy proves to be ineffective in colder regions that don’t receive good sunlight. It cannot be used at night and not all the light from the sun can be trapped by solar panels. Solar energy advantages are much more than its disadvantages which make it a viable source of producing alternative energy. Wind Energy This is one of the energy sources that have been in use for a very long time and for centuries. It was used in powering sailing ships, which made it possible for explorers to sail around their trade routes in distant lands. A single windmill can power the crop irrigation, and the family energy needs, water pumping, and electric lights. However, at the present time, there are several windmills that are used to generate the required energy mostly for industrial uses. Many of the wind turbines can capture much power all at once before feeding it to the power grid. These are commonly known as wind farms and have been in use for many years all around the world. It is only the United States that is going slow in terms of accepting this alternative energy source. Wind power is a renewable source of energy and reduces our alliance with foreign countries for the supply of oil and gas. It does not cause any air pollution and has created several jobs in the last few decades. Advancement in technologies has brought down the cost of setting up the wind power plant. Wind energy can only be used in areas that experience high winds which means that it cannot be used as a source to extract energy anywhere on earth. They sometimes create noise disturbances and cannot be used near residential areas. These disadvantages have made the use of wind energy in particular regions only. Geothermal Energy Geothermal energy can be found anywhere on the earth. Most countries tap this energy to generate electricity and power millions of homes. The areas which have high underground temperatures are the ones which are the ones which are prone to earthquakes and volcanoes. The United States produces more Geothermal electricity than any other country in the world. Most hot water geothermal reservoirs are located in the western states, Alaska, and Hawaii. Geothermal energy is totally renewable as the Earth will continue to produce heat as long as we are all are here. If these resources are tapped and are utilized effectively, they can provide solutions to the world’s power problems. Geothermal energy produces no pollution, reduces our alliance on fossil fuels. It also results in significant cost savings as no fuel is required to harness energy from beneath the earth. These advantages make geothermal energy one of the best alternative energy sources. But, geothermal has its downsides too. It is suitable for a particular region and cannot be harnessed everywhere. The earth may release some harmful gases while releasing the heat which may prove adverse for mankind. Also, the areas where this energy is harnessed are prone to earthquakes and volcanoes. Apart from that, setting up geothermal power stations requires huge installation costs. Hydroelectric Energy Solar energy is produced by the sun and wind energy is produced by the moving of winds. The heat caused by the sun drives the wind. The movement of winds is then captured by wind turbines. Both wind and sun cause water to evaporate. The water vapor then turns into rain or snow and flows down to sea or oceans through rivers or streams. The energy of the moving water can then be captured and called hydroelectric power. Hydroelectric power stations capture the kinetic energy of moving water
