Path-Q Solar

What should I do if a quote does not state whether the system can operate during a grid outage?

Answer

Treat outage operation as unspecified and ask for a written answer before accepting the quote. Most grid-connected solar systems do not automatically power the property during an outage; backup operation generally requires appropriate equipment, controls, storage or other supported architecture, and a defined list of backed-up loads.

Key points

  • Ask whether the system shuts down during an outage and what equipment is required for backup operation.
  • Request a single-line diagram identifying backed-up circuits, transfer or isolation equipment, batteries, and restart behavior.
  • Clarify backup power duration, allowable load, charging source, and operation during extended outages.
  • Ensure the contract states whether outage capability is included, optional, or excluded.

What it depends on

  • System architecture and equipment
  • Presence and size of storage
  • Critical-load requirements
  • Backup controls and electrical configuration
  • Installer’s commissioning and support scope

Risks and trade-offs

  • A buyer may assume backup exists when the system is designed only for grid-connected operation.
  • Whole-property backup usually requires more equipment and may not support all loads simultaneously.
  • Backup performance depends on battery capacity, solar conditions, load management, and equipment limits.

Information you may need

  • Written outage-operation description
  • One-line diagram and backed-up-load list
  • Battery and inverter specifications if applicable
  • Warranty, commissioning, and testing scope

Your next step

What to do next

Request a revised quote that explicitly states outage behavior, backed-up circuits, duration assumptions, equipment, exclusions, and testing responsibilities.

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SQ02603