Keep the handoff together.
Create one place for your signed agreement, equipment list, warranty documents, inspection records, and support contacts. Ask your provider which other documents belong in that folder.
Know where to look.
Ask for a walkthrough of the monitoring tools supplied with your system. Learn which screen to use for everyday checks and where to find help. Save the instructions somewhere you can reach without remembering a login.
Have a route for questions.
Write down who handles which type of question: equipment service, monitoring access, or your utility statement. If something seems different, note what you observed and when. Clear records make a support conversation more useful.
Further reading: DOE: Solar Systems Integration Basics. General education; project-specific answers depend on your home and agreement.
