Build one final solar proposal and signature packet

Create a document register before choosing the final file

Inventory every proposal, layout, production report, equipment schedule, site-survey revision, scope exhibit, financing disclosure, warranty reference, HOA item, change order and signature page. Record the displayed title, version or date, source and status. Do not assume a filename containing “final” is controlling. The goal is to see the project as a set of related records before deciding which set is complete.

FTC advises comparing written solar bids for system size, expected production, full installation cost, permits and warranties, and checking that contract terms match sales representations. [1] Use those categories as the minimum register. Keep private account, lender and identity documents in the secure project channel; the register can use short references instead of copying sensitive values into every file name.

Reconcile identity, design and production fields

Check the homeowner or contracting party, property and utility service address, module manufacturer and exact model, quantity, total DC capacity, inverter or microinverter model, battery and supporting equipment, array layout, equipment locations and monitoring. Confirm that the production report uses the same capacity and geometry as the accepted layout. If the site survey changed shade, orientation, module count or equipment, the earlier annual-kWh figure should not remain without a documented reconciliation.

DOE notes that household use, system size, roof direction and condition, shade, utility treatment and qualified installation all affect the solar decision. [3] The packet should preserve the underlying usage period and model inputs rather than only the sales headline. A conceptual rendering, permit drawing and as-built record serve different purposes; label each one honestly.

Reconcile the complete installed scope

Build one inclusion-and-exclusion table for engineering, permits and corrections, equipment procurement, mounting and waterproofing, roof work, electrical work, trenching and restoration, utility submissions, inspections, commissioning, monitoring setup, cleanup and homeowner handoff. Name the company responsible for each regulated scope and any condition that can change price or schedule.

If the proposal uses allowances or “as needed” language, state the amount or decision process, required evidence and owner-approval path. Confirm which warranties are manufacturer, workmanship, roof or third-party obligations and who receives the first service request. A packet is not complete when the equipment page is detailed but the labor, access, permit or service responsibility remains unspecified.

Match price and financing to that exact scope

Place the cash project price, amount financed, APR, term, payment schedule and total scheduled payments beside the accepted design version. Identify lender or lessor separately from installer. CFPB reports that solar-specific loans can involve markups or fees and payment structures that are not clear from the advertised monthly payment. [2] Require provider disclosures for the exact financed amount and resolve any difference between the cash price and loan principal.

Keep deposits, credits, roof or electrical allowances, early-payment assumptions, payment-change triggers and cancellation terms visible. Do not net an expected tax benefit against the real project price or loan balance; eligibility and timing are individual tax questions. When a revised design changes price, replace the financial summary rather than attaching a new price page to old payment disclosures.

Identify every incorporated exhibit before signing

Ask which files are legally incorporated into the installation, lease, loan or PPA agreements and confirm they are present, readable and complete. Cross-reference proposal version, layout, equipment schedule and addenda on a cover sheet. Leave no blank product, price or scope field to be filled after signature. If an email or sales statement matters to the decision, ask that the controlling document reflect it rather than assuming the informal statement overrides different contract language.

Record open items separately with an owner, due date and consequence. A pending permit, utility approval or professional determination should not be marked complete because the sales packet is signed. For legal interpretation or a dispute, use qualified counsel or the appropriate agency; the packet is an evidence-control tool, not legal advice.

Release and preserve one controlled set

After signatures, generate a read-only packet or folder index with the signed date and a checksum or immutable platform version where available. Give the homeowner a complete copy and have purchasing, design, permitting and project management acknowledge the same controlling version. Mark earlier proposals and rejected changes “superseded” without deleting the decision history.

At installation closeout, add accepted change orders, final equipment identifiers, inspections, utility authorization, monitoring access, commissioning record, warranties and service contacts. Reconcile them against the signed scope. Origin Direct can help organize the comparison before commitment, while provider contracts and agency decisions remain controlling. One coherent packet makes transparent direct pricing and full-service accountability easier to test long after the sales conversation ends.

Primary sources

1. Federal Trade Commission: Solar Power for Your Home

   Primary source reviewed October 11, 2026. Utility rules, equipment availability, project design and contract terms remain specific to the property and proposal.

2. Consumer Financial Protection Bureau: Issue Spotlight on Solar Financing

   Primary source reviewed October 11, 2026. Utility rules, equipment availability, project design and contract terms remain specific to the property and proposal.

3. U.S. Department of Energy: Homeowner’s Guide to Solar

   Primary source reviewed October 11, 2026. Utility rules, equipment availability, project design and contract terms remain specific to the property and proposal.

Planning examples and questions are Origin’s editorial guidance, not a property-specific diagnosis, engineering design, tax determination or promise of savings. Manufacturer and utility references do not imply an affiliation with Origin.

Related guidance

• Get a free solar quote review
• Verify the usage basis
• Reconcile post-survey revisions
• Control later change orders