The UPG 40-watt mono-crystalline solar module

A high quality mono-crystalline solar panel, the UPG 40-watt solar module is perfect for smaller applications such as RV's, or mobile homes. With a superior efficiency rating (14.5%)—this module is a good choice if space is an issue. The module’s junction box will save you the expense of buying additional adapters.

Some would argue that the module's mono-crystalline PV technology is superior to polycrystalline and amorphous thin film technologies. Invented in 1955, it is the original PV technology. Easily identifiable by uniformly stacked rounded cells, it has a single and continuous crystal lattice structure with practically zero defects or impurities. Read more about the differences in cell types here.

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