How Does Solar Energy Work and What the Costs Are

Discover how solar energy works in order to reduce your utility bill and to save your environment.

Definition of solar energy and the process of its generation

Solar energy can be defined as the process of transforming naturally received sunlight into machine power, chemical power and electric currents. In other words, the process of storing and using the radiant energy of the sun is termed solar energy. Different technologies and devices related to solar energy are used to convert sunlight into mechanical and chemical power, and electricity. Chief among these devices are water pumps, solar chimneys, photovoltaic cells and solar thermal equipments. In case you are thinking how exactly solar energy works, we would be addressing precisely that issue in this article.

Types of solar techniques and the huge power contained therein

How does solar energy work? This question cannot be satisfactorily answered until the application methods, regeneration and final usage of solar energy are considered. Experts consider solar energy as the best source of natural and renewable energy. Now, when electromagnetic waves from sunlight enter the earth's atmosphere (at high altitude levels), around seventy percent goes straight to the sky, via reflection. The remaining thirty per cent is absorbed in the form of radiant heat by the clouds in the sky and the water bodies and landmass on the earth. This radiant heat thus trapped is now converted, using machines, to electric current and/or mechanical and chemical power. While it is clear that around 99 per cent of the total stock of renewable energy sources on earth comes from the sun, the method of its working can be customized to suit specific needs, and also crucially depends on the overall efficiency of the usage of solar power by the solar energy techniques. Solar energy is demanded for a variety of reasons, which include domestic cooking, running vehicles, architectural purposes and urban planning.

While it is almost impossible to put a finger on the exact way in which solar energy work (and hence, the associated tools and mediums) without knowing the nature of service it is intended to provide, a broad classification of the solar energy can still be made. Solar technologies are generally of two types. Firstly, in active solar techniques, different tools are used on the fields in order to tap in the sunlight directly. Devices like fans are used to generate electric currents, while photovoltaic cells are used to generate heat and warmth. Pumps are used to produce mechanical power from solar energy. On the other hand, passive solar technologies are more concerned with using the sun rays directly, and do not involve any conversion processes. Buildings are constructed in places well-illuminated by sunlight. This technique is, hence, useful for urban planning. Thus, whole active solar techniques are out to maximize the amount of sunlight received by the different tools and devices, passive solar techniques aim at establishing solar power as the only usable energy resource on earth. A glance at the richly varied fields where solar power finds application is enough to convince us that this source of energy is indeed extremely important in our daily lives, and worth all the attention that it gets. Solar energy typically finds usage in generation of electric power, urban planning, agricultural needs, architecture, disinfection and desalination needs, cooking at home, and in solar lights, apart from a host of other application domains.

How much do we gain by using solar energy?

The pros and cons of using solar power have to be properly listed, in order to form an idea of the methodology of its working. Solar energy is abundant, free and a renewable source of power. As such, it scores over most other competing sources of energy. Usage of solar energy also does not release in any pollution affecting earth's atmosphere. The same cannot be said of the conventional fossil fuel energy sources, which released green house gases in the air, greatly polluting the latter, and also resulting in aiding the global warming process. Solar energy can also generate enough power to run cars and even satellites. However, there are certain limiting features to the usage of solar energy as a source of power. Solar energy plants can perform well only in areas that have continuous and strong sun rays all round the year. Hence, these plants have remained limited to only the sun-bathed parts of the world. A solar power system, set up at a place that receives irregular sunlight would fail to produce the desired output. Considering the rather high costs of installing a solar energy plant, a system at such a place cannot be economically sustained either. Researchers are, however, trying to work around these problems. The general view is that most houses would have converters that run on solar power, in the foreseeable future. The cleanliness of the earth's atmosphere would also get a much needed boost.

Users should ideally take help from a reference manual to learn how to install the solar power plant. Generally, information on the best place to install the system, the way to acquire other components at cheap prices and how to get the batteries free also need to be known. How the wiring is to be done as well as the necessary safety tips are also certain things you must know. Indeed, a well-documented reference manual can ease the process of setting up a solar power system.

Jim Martin is a researcher, inventor, home energy consultant and author of the #1 best-selling e-book, "Earth 4 Electricity- Renewable Energy Made Easy?. To Learn More about Jim Martin's Unique Step By Step Solar and Wind Power System Visit: Earth 4 Electricity. For further information visit: What is Solar Energy