What is the difference b/w them which one is better .
these solar panels are named different based on the solar cells used... mono-crystalline solar cells: As the name suggests, each cell is made from a slice of a silicon crystal, which is made by purifying, melting and freezing silicon. pol-crystalline solar cells: these are a slight variation of single crystal solar cells. they are made of slices cut out of blocks of several silicon crystals, as opposed to single silicon crystals. check the link below to see other differences between the two types (easy to understand), such as their prices and efficiency levels. there is also a third type of solar cell/panel called amorphous solar cells.
In the practical sense, the differences are trivial. I'd buy on price per watt, unless space is at a premium (it isn't for most installations).
how much does these pannels way and which are the most efficient?
