4 kW SMA Solar Kits
Compare price and performance of the Top Brands to find the best 4 kW solar system with an SMA Sunny Boy inverter. The Sunny Boy has a unique off-grid power supply to deliver up to 2,000 watts of daytime power, even during a power outage. SMA inverters also have built-in WiFi for 24/7 monitoring via Sunny Portal at no extra charge. For home or business, the system qualifies for a solar tax credit.
SunWatts has a big selection of affordable 4 kW PV systems for sale. These 4 kW size grid-connected solar kits include solar panels, SMA Sunny Boy inverter, rack mounting system, hardware, cabling, permit plans and instructions. These are complete PV solar power systems that can work for a home or business, with just about everything you need to get the system up and running quickly. The kit prices shown include hardware components only; click on any kit to add your choice of full-service installation options for rooftop or ground mount.