The energy derived from the sun is known as solar energy. The sun has been present since the very beginning of the planet Earth. During the daytime, the sun acts as a source of light and keeps the planet warm. However, there are other ways of using energy from the sun to generate electricity.
BENEFITS OF USING SOLAR ENERGY
- The solar energy is a renewable form of energy and can never get depleted.
- It does not create any pollution.
- It is environment friendly in nature.
- It reduced the dependency on the fossil fuels for energy.
USING SOLAR ENERGY
Solar energy can be used in various forms and ways. For example, a solar cooker used sunlight to cook food. Solar lights absorb sunlight during the day and can be used at night for lighting purposes. Solar heaters can be used for heating up the space. There are various instruments devised that use solar energy for meaningful day-to-day purposes.
The most widely used function of solar energy is for generating electricity. Photovoltaic is the process through which solar cells save the sunlight for converting it into electricity.
THE NEED FOR MORE SOLAR ENERGY
The demand for energy is increasing globally as more countries are shifting towards industrialization. According to the experts, the energy requirement might go as high as 30 terawatts by the year 2050. In lieu of this estimation, the need for finding alternative sources of energy is vital.
Solar energy is not only limitless but also provides 1,20,000 Terawatts of energy at any given point. However, presently, only 1% of the solar energy is in use. There is an emerging need to discover abundant, cost effective and eco-friendly materials that can assist in converting solar energy into electricity. Various technologies are being used to produce more effective solar cells.
Currently, the commercial solar cells are either made from silicon or CdTe (cadmium telluride) or CIGS (copper-indium-gallium-selenide). Thin film solar cells are being made which consists of flexible substrate with has a coating of solar absorbent material. These are somewhat inexpensive over other solar cells made from silicon.
Solar energy needs to be harvested more and more owing to the growing need for electricity. Efforts are being taken to cut down the price of solar power so as to make more cost effective solar cells. This, in turn, would assist in meeting the growing need for consumption of electricity.