How to Compare Solar Quotes

How do I compare solar quotes?

How to compare solar panel quotes — 8 factors: (1) TOTAL COST — the installed price including scaffolding, wiring, and VAT (should be 0%). (2) COST PER kW — divide total by system kW. Average: £1,200-£1,800/kW. (3) PANEL BRAND & WATTAGE — LONGi, JA Solar, Trina = good. SunPower, REC = premium. Check watts per panel (400W+ is current standard). (4) INVERTER — GivEnergy, Fronius, SolarEdge = good. Check hybrid capability if you want a battery later. (5) WARRANTY — panels (25yr), inverter (10-12yr), workmanship (5-10yr). (6) ESTIMATED OUTPUT — kWh/year prediction. Should be based on PVGIS data for your location and orientation. (7) PAYMENT TERMS — deposit (max 25%), stage payments, or pay on completion. Avoid paying 100% upfront. (8) REVIEWS — Trustpilot, Google, Which? Trusted Traders. Check recent reviews (last 12 months).