Only supplier to review the potential impact of shade, including measuring it, and only supplier to really look at roof access and get on the roof to measure it up to confirm that 20 panels could fit considering the terracotta roof tiles we have and roof shape. Also volunteered to relocate TV antenna which would have shaded the panels in morning.
One of only two suppliers who was adamant that the inverter should go in the garage out of the sun, whereas other supplier (SAE Group) stated the inverter must be mounted next to the electrical main meter box on the north wall of the house in full sun. As an engineer I know that electronics must not be mounted in full sun.
