400 kW Solar Kits
Compare price and performance of the Top Brands to find the best 400 kW solar system. Buy the lowest cost 400 kW solar kit with the latest, most powerful solar panels, inverters and mounting. For business or utility, save 30% with a solar tax credit.
What You Get With Every PV System
- Solar panels, inverters, mounting, cables
- Up to 1,000 panels generate 31,000 kWh / mo (varies)
- UL Certified with up to 30 year manufacturer warranty
- Mount on rooftop or ground; up to 18,000 sf
- System design, permit plans, and installation instructions
- 24/7 performance monitoring via web and smartphone
- Lifetime technical support
- Add-on options for battery storage, ground mounting, EV charging or full-service installation
SunWatts has a big selection of affordable 400 kW PV systems for sale. These 400 kW grid-connected solar kits include solar panels, DC-to-AC 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.
CLICK ON A SOLAR KIT BELOW to review prices, parts list and options for ground mounting, battery storage or EV charging.