Solar power could be considered the oldest form of energy used by all manners of life on this planet and is constantly touted as a reliable, renewable energy source that can be used for all sorts of purposes. This includes lighting, cooking and the heating of fluids — including water and other liquids for domestic, commercial or even industrial uses. As an energy source solar energy has multiple benefits, the most widespread of which is used in order to power water heaters for millions of homes around the world as well as generating heat both industrially and domestically. Such systems typically employ a grid of panels located on the roof of a home or other structure that collect the sun’s rays and channels the energy into a controlled system and are particularly popular in countries that enjoy round-the-year sunshine.

Solar energy can also be put to use in agriculture in order to increase plant productivity. Perhaps the most well-known use of solar energy is not in its pure power-generating concept but in its use in greenhouses that allow the sun’s energy to be converted into heat in order to facilitate the year-round growth cycle of some plants. While it’s true this may not be the standard energy usage most people are familiar with the usage of the sun in greenhouse production has acted as both an efficient and highly reliable source of power to assist with plant growth around the world for quite some time.

In domestic use solar energy can, in certain circumstances, be used in order to supplement conventional lighting as well. This system features focusing mirrors and optical fibers that track the sun’s path and then transmit the trapped light inside a building. Solar energy has also been used to power cookers and has even been used in the pasteurization process. While the first description of using solar energy through fiber optic cables in order to transmit light is a direct use of the sun’s rays the latter two forms (utilizing energy for cookers and pasteurization) typically require some sort of solar energy cell to convert energy into usable electricity for conventional use.

Solar energy can further be used in day lighting technology which offsets noon solar energy use, thereby all but replacing artificial lighting and lowering the use of air conditioners in both homes and commercial buildings which further serves to reduce electricity usage and greenhouse gas emissions.

Also, in terms of human health, the increased use of natural lighting has been shown to positively impact human physical and mental health. Increased natural sunlight increases the intake of vitamin D as well as serves to reduce the effects of such conditions as Seasonally Effective Disorder, a leading cause of depression for millions of people worldwide that are affected by seasonal change. For many people solar energy processed within their own bodies (much like plants utilize the sun for their own processing) has helped them recover from otherwise potentially deadly conditions thanks to the increased vitamin production and mineral absorption that exposure to sunlight granted them.

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