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Comparing solar panels
There are three types of solar panels – monocrystalline, polycrystalline and thin-film.
Let’s compare the three types by their price. Monocrystalline panels are the most expensive and polycrystalline ones are less expensive. Thin-film panels are the least expensive.
Price of solar panels is related to their efficiency and their ability for solar panels energy conversion. The more efficient a panel, the less area needed to install a solar array comprising that kind of panel. Monocrystalline panels are the most efficient, polycrystalline panels is slightly less efficient than monocrystalline ones, while thin-film panels have the lowest efficiency.
Next we could compare solar panels by ease of their installation. Crystalline panels have normal ease of installation. Thin-film panels are harder to install. Due to their low efficiency they need larger area to install. This means that more mounting rails are needed and installation is more time-consuming.
It’s interesting to compare solar panels by tolerance to shading. Monocrystalline panels are least tolerant to shading. Polycrystalline panels perform a bit better. Thin-film panels are highly tolerant to shading. Shading is to be avoided whenever possible.
We come to a frequently asked question: Which solar panel is considered ‘good’? As a rule, a good solar panel is made of tempered glass instead of inferior plate glass. A good solar panel, has 5, 10, 20 or 25 years of warranty for power output. For a good panel rated power and other electrical parameters come with a guaranteed standard tolerance.
If you’re on a shoe string budget, you may consider buying either cheap or second-hand solar panels. Cheap solar panels are NOT produced by an established brand and are quite affordable. You can find them as much as fifty percent less than branded panels. Cheap or second-hand solar panels have lower efficiency, especially in cloudy days, their warranty period lasts usually 1 or 2 years, they are made of plate glass instead of more advanced tempered glass, and their rated power tolerance is usually plus minus 10 percent.
If you decide to use cheap solar panels, the best way is to buy second-hand monocrystaline panels because this technology has been proven over time.
There are solar installations still operational for about 40 years.
Additional information:
Learn more about different types of solar panels for home use here:
http://solarpanelsvenue.com/types-of-solar-panels-most-used-pv-solar-panels/
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Post time: Jul-12-2017