Energy is one of the major problems faced by almost all countries in the world. This is because energy is one of the main factors for the economic growth of a country. Energy problems are becoming increasingly complex as the increasing demand for energy from all countries in the world to sustain economic growth makes the inventory of conventional energy reserves less and less. You can use off grid solar system for your home.
Currently, total energy demand worldwide reaches 10 Terra Watt (equivalent to 3 x 1020 Joule/year) and predicted this number will continue to increase to 30 Terra Watt in 2030 [1-3]. The increasing need for energy also, in fact, collides with the needs of mankind to create a clean and pollution-free environment. These various considerations require the need to develop alternative energy sources that can address the above challenges.
The solar is a power plant able of converting sunlight to electric. Solar energy is actually the most assuring source of energy given its sustainable nature and its enormous amount. The sun is a source of energy that is expected to overcome the problems of future energy needs after a variety of conventional energy sources are reduced in number and are not friendly to the environment. The total energy requirement of 10 TW is equivalent to 3 x 1020 J each year.
While the total solar energy that reaches the earth’s surface is 2.6 x 1024 Joules per year. For comparison, the energy that can be converted through the process of photosynthesis throughout the earth’s surface reaches 2.8 x 1021 J each year. If we look at the amount of energy needed and compared with the solar energy arriving at the surface of the earth, actually cover 0.05% of the Earth’s surface area (the total earth’s surface area is 5.1 x 108 km2) with a solar cell having an efficiency of 20% , All the energy needs that exist on earth can be fulfilled.
The enormous amount of energy generated from sunlight, making solar cells an excellent alternative source of energy for the future. Solar cells also have the advantage of being a practical energy source considering it does not require transmission because it can be installed modularly in any location that requires it.