The Perlight delta black 415W solar panels use busbar-less technology with 1.5% more surface area than a half-cell solar panel. The all-black module has an attractive finish with no visible white lines. This is thanks to the use of busbar-less technology, which has also led to the panels having a market-leading efficiency of 21.2%, with a parallel layout that reduces the shading effect compared to a traditional solar panel module. A lower operating temperature and high-pressure resistance reduce the risk of micro-cracks or hot spots appearing in the panel, thus improving performance and prolonging the life of your solar panels. Fully MCS certified.