Solar Power - The Basics

Written by Paul Woods

Friday, 11 July 2008 09:42

Solar power is a free, non-polluting, renewable resource that is always available. For a long time, experts have been experimenting the most efficient methods of its use. Here are some basic facts on how it is currently being used.

Solar power has a variety of different uses. It can be used as a direct means of heat, for example heating water. It can be converted to electricity via photo voltaic cells. Using the solar power directly is often termed 'passive solar' whereas converting it into electricity is known as 'active solar'. The weak form in which we receive solar energy can be a limiting factor. To make the best use possible of solar power we need to discover how to harness it and then make it concentrated.

Solar power has been used in its passive state for many centuries. Examples of this include heating water, lighting fires and drying wood. In places where sunlight is available for most days of the year, solar water heaters are popular. There are also solar power plants which can concentrate the energy of the sun and generate electricity in large amounts. Power plants like these are especially economical and useful in out of the way places where conventional electricity is not always available. Even space craft and satellites make use of solar energy.

There has been a great deal of interest in recent years in using solar power to power motor vehicles, however this is still in the experimental stages of development. The difficulty here is that the amount of power required to supply the car's engine would need big solar panels, which are impractical on a moving vehicle owing to the panels' size and fragility. Also, at times when there is no sun these vehicles could only run for limited time. So these vehicles are not ready as yet to replace conventionally powered ones.

Solar power is increasing in demand, however, it is not widely used. Although the technology is here, the cost of converting solar power into energy is prohibitive. However, with the continuing rising costs of fuel, it could become a viable alternative in the not too distant future. As more people become concerned on the environmental impact of using fuel, more will be looking for more greener and cleaner energy. As this demand increases manufacturers will find it more feasible to produce solar powered devices.

About the Author:

If you are interested to learn more about solar energy then visit Paul Wood's website for more interesting information about solar energy uses

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