Path-Q Solar

What should I ask an installer about system performance after commissioning?

Answer

Ask how performance will be measured, where to access monitoring, what production estimate and assumptions apply, which alerts are enabled, how faults are reported, and who provides support. Obtain commissioning records, equipment details, warranties, shutdown instructions, and a clear process for addressing underperformance.

Key points

  • Request the expected production baseline and an explanation of normal seasonal variation.
  • Confirm whether monitoring is whole-system, string-level, or panel-level and how long data is retained.
  • Ask about inspection, maintenance, warranty claims, response process, and customer responsibilities.

What it depends on

  • System design and monitoring architecture
  • Installer and equipment warranties
  • Commissioning status and documentation
  • Support and service arrangements

Risks and trade-offs

  • A production estimate is not a guarantee unless the contract expressly makes it one.
  • Without documented baselines and alerts, performance problems may be detected late.

Information you may need

  • Final equipment list and system design
  • Production estimate and assumptions
  • Monitoring credentials and alert settings
  • Warranty and service contacts

Your next step

What to do next

Use a commissioning checklist and do not treat the project as complete until monitoring access, documentation, and support contacts have been verified.

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SQ01344