Path-Q Solar
How can I verify that the panels listed in a quote match the equipment being installed?
Answer
Verify the manufacturer, exact model number, electrical ratings, quantity, and serial numbers against the signed proposal and approved equipment list before accepting the installation. Inspect the labels on delivered and installed panels, retain photographs, and request the final equipment schedule and warranty documents.
Key points
- The brand name alone is insufficient; model numbers can differ in wattage, dimensions, technology, and warranty terms.
- Compare the panel count and total nameplate capacity, not just the appearance of the modules.
- Check whether substitutions require your written approval under the contract.
- Use the final as-built documentation, monitoring portal, and warranty registration information to confirm what was actually installed.
What it depends on
- The detail and substitution language in the signed contract
- Whether equipment is already delivered, installed, or concealed from view
- The completeness of final commissioning and warranty records
Risks and trade-offs
- An apparently equivalent substitution may have different output, dimensions, degradation assumptions, warranty coverage, or compatibility.
- Serial-number records are useful for warranty claims and future sale of the property.
- Equipment labels may be difficult or unsafe to access after installation; do not climb on the roof without appropriate precautions.
Information you may need
- Signed proposal and equipment schedule
- Approved change orders and substitution provisions
- Photographs of panel labels and delivery records
- Final as-built drawings, warranties, and monitoring information
Your next step
What to do next
Ask the installer for a signed final equipment schedule and compare it line by line with photographs of the installed labels before signing completion.
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SQ00996