Path-Q Solar

What project milestones should trigger payments during a solar installation?

Answer

Payments should follow verifiable completion of defined milestones and leave a meaningful final amount until installation, inspections, documentation, and required grid approval are complete, subject to applicable contract rules.

Key points

  • Use milestones such as completed design and approvals, delivered equipment, installed system, passed inspections, and final operating authorization.
  • Define acceptance criteria, evidence required, and who pays for correcting failed work.
  • Avoid paying substantially ahead of value delivered or paying the final balance before required approvals and completion documents.

What it depends on

  • Project scope and contract terms
  • Permit and inspection sequence
  • Interconnection and operating approval
  • Applicable payment and consumer-protection rules

Risks and trade-offs

  • Front-loaded payments increase exposure if the installer stops work or delivers defective work.
  • Overly strict retention can create contractor cash-flow pressure or higher pricing.
  • A milestone tied only to physical installation may occur before the system can legally operate.

Information you may need

  • Itemized payment schedule
  • Milestone definitions and evidence
  • Final acceptance and correction process
  • Rules affecting deposits, retainage, or final payment

Your next step

What to do next

Ask the installer to revise the payment schedule so each payment corresponds to documented progress and the final payment follows inspection, required approval, and delivery of closeout records.

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Some details may depend on your location, installer, utility, incentives, regulations, or specific property.

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