The installation was done well. However I would note the following: The installer removed an existing system and took most of the panel hold brackets and all the electrical connection leads, mains wiring from the inverter and connection box from the panels to the mains supply. These were my not items the installers to remove from site. This was discovered when I went to sell it as a complete system. I had some specific set out requirements for the system. The installer could have been more amiable to listen to me rather than (in my opinion) trying not do what I asked.