Module Grades are not like school grades. Unfortunately most people think its as simple as that. Because of their remarkably tough endurance due to their construction a grade B solar panel can last just as long as Grade A panels (30 to 40 years). A Grade B puts out the same power and has the same expected lifetime as a grade A panel . Grade B modules have cosmetic blemishes only. This includes discolored cells and scratches through the frame . However, most people could not be able to tell the difference from a few feet away.\r\n\r\nThey are rated under the same test conditions as Grade A modules. They cost anywhere from 20% to 40% less than grade A modules. However they are only 1% of a typical factories output, so supplies of these inexpensive panels are extremely limited.\r\n\r\nIf you are considering buying a brand who is in financial trouble, be it Grade B’s or Grade A’s, will face a similar reception from our competitors that say “we only sell the good ones” they will also say, “its all about the warranty.” In many cases, a warranty form a manufacturer is less desirable than a warranty from a distributor or a third party. The reason for this is due to the volatile nature of PV industry. In the 25 years Sun Electronics been in business hundreds of PV manufacturers have gone bankrupt. customers who bought module from these bankrupt manufacturers now has panels with no warranty.\r\n\r\nSo what is it that makes a company tell their prospective customers that Grade B modules are “garbage” even when they can’t tell the difference from an A and B from a foot away? When you consider that grade B modules are 20% to 40% cheaper, it becomes apparent that the answer is, they can’t find them, they are too stubborn and would rather resort to slander than change. Jealousy is unfortunately a very prevalent vice in this world. Of course, there are requirements sometimes, such as panels that must Made In America, have UL or TUV certification, however, all these things can easily be overcome by searching a little harder and further for inventory fitting the RFQ.\r\n\r\nThat’s one of the many things that we do here at Sun Electronics Int., Inc.. We travel the world looking for the best quality B’s, fall out or auctions. Fall out is any solar modules that does not make the grade because of cell source, cosmetic blemish, micro cracks, tiny chips or scratches. Fall out or yield typically leaves about 2% of the product unsalable because of a manufacturer’s concern that his modules won’t be absolutely perfect to within a fraction of a percent as is required for solar farms or other very large systems.\r\n\r\n \r\n\r\nJK\r\n\r\n \r\n\r\nP.S. In November we will do a survey of the purchaser satisfaction of every single B grade module we have ever sold. That’s about 100 MW’s. If you are one of them I hope you’ll give an honest answer to the question “are grade B modules really garbage in your opinion? Do the perform as well in terms of wattage output and longevity. Do they look significantly worse or hardly noticeable due to nearly invisible cosmetics.
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