Comprehensive Warranty Advantage: Trina Solar's TrinaProtect program offers an industry-leading 25-year product warranty for residential installations in the US, significantly longer than many competitors who typically offer 12-year product warranties, providing superior long-term. Comprehensive Warranty Advantage: Trina Solar's TrinaProtect program offers an industry-leading 25-year product warranty for residential installations in the US, significantly longer than many competitors who typically offer 12-year product warranties, providing superior long-term. This Limited Product Warranty covers glass breakage provided that there was no external cause of breakage (i. only breakage caused by the glass itself or the module is covered). Over the years, the company has pushed the boundaries of innovation to make solar energy more accessible. 5% efficiency with 25-year performance warranties. Vertex series delivers excellent power density. How much do Trina Solar solar panels cost? Trina Solar solar panels range from $0. For a typical 6kW system, that's approximately $3,600 to $5,700. 39/W on the EnergySage Marketplace – that's $13,860 to $20,340 for a 6 kW system, before the federal solar tax credit.