SMA, the world’s leading solar inverter manufacturer, took their most advanced grid-tie inverter technology and added an outstanding set of features specifically for off-grid systems. The Sunny Island 5048U is an extremely robust and sophisticated power inverter suitable for both off-grid systems and utility backup. Pure sine wave power, the ability to facilitate coupling of all AC power sources, and an advanced battery management system are just some of the features. “Stackable” for single-phase, split-phase or three-phase applications. Suitable for systems from 3 kW to 26 kW.