Solar Quote Audit & Contractor Due Diligence Sheet
Printable 1-page audit checklist to compare solar installation bids, evaluate microinverters, and protect your roof warranties.
RESIDENTIAL SOLAR QUOTE COMPARISON & AUDIT
Contractor Due Diligence, Equipment Warranties & Price Per Watt • 2026 Edition
Installer / Company
__________________
System Size (kW DC)
______ kW DC
Price Per Watt
$ _____ / Watt
Net Cost (After 30% ITC)
$ _________________
1. Equipment & Technology Specs
Panel Brand & Wattage: Tier 1 (e.g. REC, Qcells, Maxeon, Panasonic 400W+).
Inverter Type: Enphase IQ8 Microinverters or SolarEdge with optimizers.
Degradation Rate: Guaranteed >= 86% production output at Year 25.
Year 1 Generation: Guaranteed kWh output modeled with Helioscope/Aurora.
2. Warranties & Roof Guarantees
Equipment Warranty: 25-year manufacturer warranty on panels & inverters.
Workmanship Warranty: 10–25 year installer labor warranty on wiring.
Roof Penetration Warranty: Minimum 10-year guarantee against water leaks.
Production Guarantee: Cash reimbursement if system produces below spec.
3. Pricing, Financing & Tax Credits
Fair Cash Price: Target $2.50 to $3.00 / Watt gross price before incentives.
30% Federal ITC: Claimed directly on IRS Form 5695 (Purchased Systems).
Dealer Fee Check: Verify no hidden 25%–30% financing origination fees.
Net Metering Rate: Verify 1:1 NEM vs Time-of-Use buyback credit rates.
4. Installer Credentials & Permitting
NABCEP Certified: Master electrician has active NABCEP certification.
Permit & PTO: Contractor handles city permits, structural engineering & utility PTO.
Main Panel Upgrade (MPU): Verified if existing 100A/200A panel needs upgrade.
HOA Compliance: System layout meets state solar access law protections.
Generated by SolarROI.tools • Residential Solar Due Diligence Suite.
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