Here’s our own choice from the JA Solar product line! This 144 cell panel
is best suited for commercial installations. The price is only $237, quite low for 405 Watts that it has. The design is pretty generic, but again it is made to provide lots of power, not to look good. The module reaches a 20.2% energy conversion rate. There are lots of innovations implemented here: half-cut cells improve the durability of the module, busbars ensure the better flow of electricity inside and PERC technology allows to increase the efficiency while keeping the production costs low. So far our customers haven't been disappointed with this JA Solar panel.