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Compare 40kW Solar Kits

Compare price and performance of the Top Brands to find the best 40 kW solar system. Buy the lowest cost 40kW solar kit priced from $1.15 to $1.90 per watt with the latest, most powerful solar panels, module optimizers, or micro-inverters. For home or business, save 30% with a solar tax credit.

CLICK ON A SOLAR KIT to review parts list, specifications, and prices for DIY or FULL-SERVICE installation.

What You Get with Every PV System

  • Solar panels, inverters, roof mounting, cables, more
  • 87 to 120 panels generate 4,000 kWh / mo (varies)
  • UL Certified with up to 30 year manufacturer warranty
  • Mount on rooftop or ground (optional); up to 2,200 sf
  • Flat-rate shipping with lift-gate service to continental U.S.
  • System design, permit plans, and installation instructions
  • 24/7 performance monitoring via web and smartphone
  • Lifetime technical support

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47kW Solar Kit, Peimar 325P XL panels, SMA Sunny Boy, Schletter FS ground mount
47kW Solar Kit, Peimar 325P XL, SMA Inverter, Ground mount
Ships in 4 to 6 Weeks
Your Price: $55,000.00

This grid-tied PV energy system produces 50,560 watts (50kW) with 158 Peimar 320 watt XL polycrystalline solar panels SG320P, SMA Sunny Boy inverters with emergency power supply, Sunny Portal 24/7 monitoring, integrated safety switch disconnect, Schletter FS ground mount, permit-ready building electrical plans, and lifetime support. UL listed and CEC approved, Peimar is backed by a 20-year product warranty plus a 30-year power output warranty to give you peace of mind. The Sunny Boy inverter has 2,000 watt Emergency Power Supply for daytime power in case of grid outage. This solar power system has every component needed to get the job done for business or home energy production. Order online or PHONE 888-498-3331
   
 

FreeCleanSolar has a big selection of affordable 40 kW PV systems for sale. These 40 kW size 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.

A 40kW Solar Kit requires up to 2,200 square feet of space. 40kW or 40 kilowatts is 40,000 watts of DC direct current power. This could produce an estimated 3,000 to 4,000 kilowatt hours (kWh) of alternating current (AC) power per month, assuming at least 5 sun hours per day with the solar array facing South. The highest output will be achieved with an unobstructed south-facing view of the sun for maximum solar power. The actual power generated will vary based on location, equipment and installation factors. Refer to your electric utility bill to find the actual kWh used per month and compare it to how much power these low cost 40kW PV systems can generate.


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