The Sunny Boy 3000US and 4000US power inverters are everything you would expect from industry leading SMA: highly efficient, extremely reliable, user-friendly and versatile. Their compact design makes them ideal for residential and light commercial PV systems. Engineered and built to last. Standard ten year warranty.

Optimally suited for small to mid-range systems, the Sunny Boy 6000US, 7000US and 8000US can be integrated into SMA’s Sunny Tower when higher wattage is required. All four models are compatible with SMA system monitoring solutions. Designed to meet IEEE-1547 requirements. Highly efficient, user-friendly, and field-proven. Sunny Boy inverters are the most reliable inverter available.