The Sunny Boy solar inverters characterize the Technology- and Quality-Leadership of SMA. They are optimally suitable for use in small and mid-range systems. They impress with first class efficiency, user-friendliness and reliability. The Sunny Boys have been repeatedly acclaimed - and are constantly developing. The new Generation come with innovative technologies such as OptiTrac and H5-Topology. These make the device even more efficient - and therefore ensure a very good solar yield. The Sunny Boy US series inverters utilize proven technology and are designed specifically to meet IEEE-1547 requirements. Increased efficiency means better performance and shorter payback periods. All four models are field-configurable for positive ground systems making them more versatile than ever. Throughout the world, Sunny Boy is the benchmark for PV inverter performance and reliability.