This 2011 PV installation was suffering from productivity loss and increased maintenance costs. The cause of this were its ageing centralized 500kW inverters, and the 230Wp PV modules that were damaged by hot-spots and loss of insulation.
As a result, the revamping involved installation of the SG250HX string inverters, PV modules and components to be changed from running on 1,000 Vdc systems to be compatible with 1,500 Vdc systems. This change was made to take advantage of SG250HX smart monitoring solution.