Your solar quote checklist
The line items worth checking before you feel ready to say yes.
A solar quote should be specific. If it is vague on any of these points, ask for clarification before proceeding.
System specification
✓ Total system size in kWp. ✓ Number of panels and individual wattage. ✓ Panel make and exact model number. ✓ Inverter make, model and type (string / microinverter / optimiser). ✓ Whether the inverter is battery-ready. ✓ Mounting system make and type.
Generation estimate
✓ Estimated annual generation in kWh. ✓ Specific yield assumed (kWh/kWp). ✓ Roof direction and tilt used in the estimate. ✓ Shading assumptions. ✓ Whether the estimate is based on PVGIS or another tool.
Price and what is included
✓ Total price including VAT. ✓ Confirmation that scaffolding is or is not included. ✓ Any electrical remediation or upgrade work noted. ✓ DNO application and registration. ✓ MCS certificate (required for Smart Export Guarantee access). ✓ Monitoring hardware and app setup.
Warranties and aftercare
✓ Panel product warranty duration. ✓ Panel performance warranty and minimum output at year 25. ✓ Inverter warranty duration. ✓ Installation workmanship warranty. ✓ Contact details and process for post-installation support.
Key takeaways
- A complete quote should specify the exact panel model — not just a brand or range.
- The generation estimate should state the assumptions used, not just the headline kWh figure.
- Scaffolding and electrical work are frequently quoted separately — always ask.
- An MCS certificate is required to register for the Smart Export Guarantee.
This guide is for general information only. It is not a substitute for a survey of your home or professional advice. Solar Help Centre does not install solar equipment or produce the final design for your home.
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