Every hour the beams from the sun shine down to Earth with the strength to quench the entire global energy needs - a compelling statement from the National Geographic magazine. Solar energy is the progressive technology used in the harnessing of the power from the sun and converting it into power. Presently, we only use one tenth of the energy demands from solar energy.
What happens when the sun hits the units?
Designed of the same stuff as computer chips, solar panels use semiconductor substances. Once the sunlight sweeps over the cells, it bumps, the electrons loose from their adjoining atoms, and as the electrons flow through the cell, they are essentially producing electricity.
Solar Power Plants versus Coal and Hydro
At solar energy power plants, techniques are employed to focus the sun’s energy as a giant supply of heat. In turn, the heat source boils water and the steam from the boiling water powers the powerful turbines that produce electricity for millions of people. Generally, the same thing occurs in a coal and hydro power plant, except using the sun’s energy leaves little to none harmful effects behind.
Some Drawbacks of using Solar Energy
Solar energy cannot be harnessed at night, or on cloudy or rainy days. In addition, without some kind of battery for storage at night, solar energy is useless to anyone needing electricity when the sun is not shining. The technology around solar energy harnessing is still very expensive to many people. Utilizing solar energy for large amounts of people requires massive amounts of land, and land is a diminishing resource everywhere.
Ideally, the sun’s energy harnessed without any damages environmentally. Meanwhile, people would have plenty of land to live the rest of their lives on a pollutant free Earth. Moreover, until solar energy is offered at decreased amounts of money than now, it will be difficult for the trend to catch on for the public.