Keep your solar panels out of the shade. It might seem obvious, but your solar panels do need sun. Make sure that you are not installing them in the shade. Trim back the branches on surrounding trees if you need to. Failing to do so could cost you more than half your energy output.
7.5 KW Solar panel system installation. 30 solar panels x 250 Watt. Solar panel system installer: Quebec Solar http://quebecsolar.ca Location: Montréal, Québec.