400-459W Solar Panels

Divide your target system size by panel wattage. A home using 10,000-12,000 kWh per year typically needs a 7-10kW array, which is 16-25 panels at 400-450W each. Your roof's usable square footage and local sun hours fine-tune the count — our team can run the math from your utility bill.

Electrically, almost nothing — all-black panels use black backsheets and frames for aesthetics and typically give up 2-5W of nameplate output because they run slightly warmer. If the array is visible from the street, most homeowners consider that a worthwhile trade.

Bifacial modules harvest light on the rear side and can add 5-15% real-world yield — but only with reflective clearance beneath them. On a flush rooftop that gain drops near zero. Choose bifacial for ground mounts, carports, and tilt-up racks; choose mono-facial for flush roof installs.

Full pallets ship LTL freight with curbside delivery — a pallet of 31-36 panels weighs 1,500-1,800 lbs, so plan for a forklift, loading dock, or liftgate service. Smaller quantities ship by the most economical carrier for the panel size.

Expect a 12-25 year product warranty (Silfab and Mission are at the long end) and a 25-30 year linear performance warranty guaranteeing 84-87% of rated output at the end of the term on N-type models. Each product page links the manufacturer's warranty document.