420W Solar Panels

420W Solar Panels for High-Efficiency Solar Arrays

Shop 420W Solar Panels from the world's leading manufacturers at PES Supply. These 420-watt modules deliver an excellent balance of power output, efficiency, and value—making them a popular choice for residential and commercial solar installations. Browse panels from Canadian Solar, Trina Solar, JA Solar, Jinko Solar, LONGi, REC, and more.

Why 420W Solar Panels?

• Optimal size-to-power ratio for most residential roofs
• Higher efficiency means fewer panels for the same system size
• Lower balance-of-system costs – fewer rails, fewer connections
• Available in monocrystalline, bifacial, and all-black options
• 25-year product and performance warranties standard

420W panels are ideal for maximizing energy production on limited roof space. Their higher wattage per module reduces the total panel count needed, lowering racking and labor costs. Most 420W modules feature half-cut cell technology for better shade performance and lower temperature coefficients.

PES Supply stocks 420W panels from multiple brands so you can compare specifications, warranties, and pricing. Whether you're installing a 5kW residential system or a 500kW commercial array, our team helps you find the right panels at the right price.

Browse the full selection below and order today with fast shipping from PES Supply. Questions? Our solar and backup power experts are ready to help you spec the right system—contact us.