Path-Q Solar

When should I ask for a revised quote after changing my expected electricity use?

Answer

Ask for a revised quote whenever the change is material to system size, battery operation, electrical capacity, or financial results, and do so before signing, financing, or allowing equipment to be ordered. Small short-term fluctuations may not require redesign, but a new EV, heating system, occupancy change, major appliance, or business-use change usually warrants an updated model.

Key points

  • Describe what changed, when it will occur, and whether the new load is continuous, seasonal, or occasional.
  • Request updated production, self-consumption, battery, electrical, and financial assumptions.
  • Check whether the change affects panel capacity, service upgrades, backup circuits, or equipment selection.
  • Ensure the revised quote identifies changes in price, schedule, warranties, and expected performance.

What it depends on

  • Magnitude and timing of the load change
  • Current system design and remaining electrical capacity
  • Battery and backup objectives
  • Stage of contracting and procurement

Risks and trade-offs

  • Failing to revise may leave the system undersized or create avoidable export and backup limitations.
  • Oversizing for uncertain future use can increase cost and reduce value.
  • Late redesign can cause delay, change orders, or nonrefundable procurement costs.

Information you may need

  • Updated appliance, EV, heating, occupancy, or business-use plans
  • Recent bills or interval-use data if available
  • Current quote and equipment reservations
  • Installer's revised modeling and price

Your next step

What to do next

Notify the installer in writing now and request a revised proposal before any binding commitment or equipment order.

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