Path-Q Solar

How can I compare solar offers with different system sizes and prices?

Answer

Normalize each offer by comparing expected annual production, total installed cost, cost per expected unit of output, equipment and warranty terms, bill savings, and total ownership cost. Do not choose by panel count, system size, or headline price alone.

Key points

  • Confirm that production estimates use comparable shading, orientation, degradation, and loss assumptions.
  • Separate cash price, financed price, lease or PPA payments, and any included roof or electrical work.
  • Compare system size with your load and export value so that additional capacity is valued appropriately.

What it depends on

  • Expected annual and monthly production
  • Installed scope, equipment, warranties, and monitoring
  • Utility tariff, consumption profile, and export treatment
  • Cash, loan, lease, or PPA payment structure

Risks and trade-offs

  • A cheaper offer may have lower output, weaker equipment, excluded work, or less service coverage.
  • A larger system may produce more energy but lower incremental financial value if exports are less valuable.
  • Different financing structures can make identical cash prices appear to have very different monthly costs.

Information you may need

  • Itemized proposals with system size, production, equipment, and included scope
  • Warranty, service, monitoring, and performance-guarantee terms
  • Utility bills, tariff, funding terms, and any roof or electrical requirements

Your next step

What to do next

Create a side-by-side comparison using the same production, savings, cost, and ownership assumptions, then request clarification for every excluded or uncertain item.

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