Hi, I have been quoted 6.6KW Solar panel system to be installed at my place. I currently have 1.5KW installed. The installer recommended adding Solar Optimizer to the new Solar panel system. This is due to shading issue. My next door neighbour is two-story house and some trees around the house. The installer said if I don’t want to pay more for the solar optimizer, they can remove the old Solar Panel system (1.5KW) and install the new solar panel on the current location. I will save more because I don’t need to buy more solar optimizer.
Is it really worth adding the Solar Optimizer to reduce the impact on shading?
My old Solar Panel system (1.5KW) is about 7 years old. How long does an average inverter last?