Solar Energy Efficiency Reviews & Tips
By: Ryan Narendra
Solar energy is one of many alternatives available to those striving to lessen or eliminate dependence on fossil fuels, and many questions exist as to just how efficient solar energy really is. There are several key factors in determining solar energy efficiency, and while accurate calculation is best left to experts, here are a few considerations to help you understand just what is involved.
In its passive form, solar energy is used to heat or cool buildings. By using the sun's energy more directly, more is made available. As such, passive solar energy can be harnessed for these specific purposes, and can be more effective even in areas with less direct sunlight. Its heating and cooling effects also persist even when the sun is not present.
Active solar energy uses photovoltaic panels which convert the sun's energy into electric current. Some energy is lost in this process, and unlike passive solar energy, the absence of an electric current has a more immediate impact than does absence of continuous heat in a well-designed heat-radiating system. Electrical current is more versatile than is simple heat or cold, however. Also, as some energy is lost in the conversion process, more direct sunlight is required for this method to be sustainable.
Since both methods require ready access to sunlight, many factors of location affect the efficiency of solar power. Altitude, climate and latitude each play a role in how much sunlight is to be had. In general, lower latitudes will receive greater amounts of sunlight, and cloudier climates are not prime candidates for solar energy use.
A building's architecture can also contribute or detract from solar efficiency. Structures with large, unobstructed rooftops for solar panel installation are great, as these areas are usually exposed to a large amount of sunlight. The direction of orientation is another important factor, as more solar energy originates from the south in the northern hemisphere and from the north in the southern. Obstructions larger than the building in the appropriate direction will block sunlight and reduce efficiency.
Finally, solar power ends when the sun isn't shining, and even the most efficient system falls down if it only provides electricity during half of its operating time. Batteries are a great way to boost efficiency and reliability by storing excess power for times when ample sunlight isn't available. Without these, any extra power simply goes to waste.
As has been seen, many factors contribute to the efficiency of solar energy systems, and there is no straight forward method of calculation. For best results, search for one of many companies and contractors specializing in this area. Also, remember that even an inefficient system generates clean, renewable energy that lessens your need for unclean fossil fuels.
We have additional information on this subject you may be interested in reading: and solar energy panels
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