It's made from 60 six-inch square cells whose corners are not trimmed, thus expanding the active surface of the module by two percent. Low oxygen content in the cells is said to increase module efficiency additionally, giving the module a conversion efficiency of up to 15.2 percent. With a total weight of 19.8 kilograms, the module delivers around 12.6 watts of output per kilogram.
The energy amortization period is said to be around one-third shorter than that of the previous model. The 250-WD+ BlackPearl is said to be able to withstand wind loads of up to 3,800 pascals and snow loads of up to 5,400 pascals. It's supplied with an exclusively positive output tolerance of up to five percent. The module is to go on sale on the European market in June 2011.
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