When choosing an installer, you should consider their level of experience, competence, and the products they use. You will also want to weigh their ability to provide you the best service and support before, during and after your solar installation.
All installation crews should have at least one, if not all, of their installation staff be NABCEP or RISE certified. This includes their electricians. You should ask the installer how much experience they have with installing systems that are similar to yours.
You will also want to ask your installer what components they offer and typically install. This is helpful if
there is a specific type of component package or offering (e.g., American-made, high-efficiency, ground mount) you value.
You should also research prospective installers by asking for references and looking at review sites such as Angie’s List.