Solar energy is becoming a popular energy source due to the fact that it is the most abundant and most cost effective energy source on the planet. Put simply, solar energy is energy derived from the sun, and this energy is not only clean, but renewable and costs nothing. Solar energy is created when the power of the sun is harnessed in order to produce energy. It is said that the amount of energy that the Sun provides to the Earth in a single day can power the entire planet and all of its energy needs for a whole year. Because solar energy is available as long as the Sun is available, it is also considered a renewable source of energy. It is a clean source of energy as well, due to the fact that it does not produce byproducts or pollutants that will harm the environment.
Solar energy was in fact the first source of energy used by humans. It was initially used to dry clothing or items, or to heat through direct contact. However, since the 1950’s, solar energy is used to create sources of power to fuel technology, homes, and many businesses. Given that technology is evolving at the speed of light, solar energy is becoming more proficient as an energy source, and is recognized as a feasible alternative to fossil fuels
Today’s technology allows for the harnessing of solar energy through cells known as solar cells. These are also called photovoltaic cells. Photovoltaic cells are placed in direct sunlight and as the sun hits these cells, a chemical reaction takes place to produce electric currents. These currents are then converted into electricity that can be used to power everyday items or even households.
Solar energy is classified as either active solar energy, or passive solar energy. Passive solar energy is precisely what it sounds like. Panels and solar cells are not used, but rather, structures or buildings will be constructed in a way to capture the sun’s power through the use of windows or tanks. These systems will then heat homes or water, but can not be converted into actual electricity.
Active solar energy is just the opposite. Solar panels or solar cells will be used to capture the sun’s energy. The panels or cells are placed in a way that they will maximize the sun’s exposure. The sun’s energy is then converted into direct or alternate current electricity which is then stored into batteries. In some cases, the electricity will be fed into a grid system of a utility plant when larger amounts of energy are needed.
Solar energy is used today to power homes, buildings, appliances, gadgets, and many other items. It is commonly used across the world and is recognized as a leading renewable, clean, and cost effective source of energy.
