Commercial solar systems deliver two-year paybackBy Kris Van der BijlCOMMERCIAL solar systems in Cape Town are repaying their capital cost within two years, down from an industry benchmark of eight. How grid-tied solar systems cut costs for commercial propertyThe system at Tribeca has no battery storage. Solar panel obsolescence catches commercial buyers outThe panels feeding those inverters are 665 W units from AIKO – a Chinese supplier. “Your string is only going to be as strong as your weakest panel,” Bam said. The difference is that tiles stay on the shelf for decades, and a solar panel’s production run now ends before the system’s first service.