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JA Solar 440WP Glass-Glass All Black Read more..
This Glass-Glass panel from JA Solar has 440WP and 108 cells. These are market standard panels and therefore extremely sturdy. The panel is exactly 2m2, so the best power is extracted from the surface. The back of this panel can also generate energy as they are bi-facial. The panels are extra well protected because the cells have two layers of glass. For this reason, the power guarantee is also slightly longer, namely 30 years.