Path-Q Solar
How should solar payments be tied to project milestones?
Answer
Payments should correspond to clearly defined, verifiable progress and leave a meaningful balance due after completion, inspection, correction of defects, and required approvals. Each milestone should state what work is complete, what evidence is provided, and what happens if the project stops or fails inspection.
Key points
- Define milestones such as contract signing, approved design, equipment delivery, installation, inspection, and operational completion.
- Avoid paying for a milestone until the specified deliverable is actually received and verified.
- Retain a final amount until agreed punch-list items, documentation, and required approvals are complete.
- Coordinate payment milestones with any separate lender or financing agreement.
What it depends on
- The contract scope and project sequence
- Permit, inspection, and interconnection requirements
- Equipment delivery and installation status
- Financing terms and applicable payment rules
Risks and trade-offs
- Milestones based only on calendar dates can require payment before work is complete.
- Withholding too much without clear criteria can create disputes or delay final completion.
- A lender’s payment schedule may not match the installer’s actual progress.
Information you may need
- Detailed scope and schedule
- Milestone definitions and acceptance criteria
- Payment, retainage, refund, and dispute terms
- Financing agreement and approval conditions
Your next step
What to do next
Rewrite the payment schedule so every installment is linked to a documented deliverable and reserve final payment for verified completion.
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