As mentioned elsewhere it was just parts. Installation of grid tie systems isn&#x27;t hard but does have a number of building code things you have to follow (at least in California). At the time we did the install my wife took a solar installer&#x27;s course which went over the current code.<p>I can recommend that as a plan of action, find a local group offering job training as a solar installer and take it. Then using that knowledge you can design an installation that meets your local code.