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Compare 4kW Solar Kits

Compare price and performance of the Top Brands to find the best 4 kW solar system with up to 30 year warranty. Buy the lowest cost 4kW solar kit priced from $1.15 to $2.25 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 below to review parts list and options for battery storage, EV charging and installation.

4kW SolarEdge Kits | 4kW Micro Kits | 4kW SMA Kits | String vs Edge vs Micro?


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4kW PV Kit Canadian Solar CS6K-295-black SMA 4kW PV Kit Canadian Solar CS1K-320MS SMA 4 kW Solar Kit Silfab SLA310M SMA
4kW PV Kit Canadian 295 All-Black, SMA Inverter
SHIPS 1 to 2 WEEKS
Your Price: $6,000.00
4.1 kW PV Kit Canadian 320, SMA Inverter
SHIPS 1 to 2 WEEKS
Your Price: $6,100.00
4 kW PV Kit Silfab 310 Black, SMA Inverter
SHIPS 1 to 2 WEEKS
Your Price: $6,300.00
4kW PV Kit Canadian Solar CS1K-320MS Enphase 4kW PV Kit Canadian Solar CS6K-295-black Enphase 4 kW Solar Kit LG365 SMA Sunny Boy inverters
4 kW PV Kit Canadian 320, Enphase Micro
SHIPS 1 to 2 WEEKS
Your Price: $7,180.00
4 kW PV Kit Canadian 295 All-Black, Enphase Micro
SHIPS 1 to 2 WEEKS
Your Price: $7,400.00
4 kW PV System, LG365 panels, SMA Inverter
SOLD OUT
Your Price: $7,500.00
4kW PV Kit Canadian Solar CS6K-295-black SolarEdge 4kW PV Kit Canadian Solar CS1K-320MS SolarEdge 4.6 kW Solar Kit Solar Kit Panasonic 330, SMA Sunny Boy
4kW PV Kit Canadian 295 All-Black, SolarEdge Optimizer
SHIPS 1 to 2 WEEKS
Your Price: $7,500.00
4.1 kW PV Kit Canadian 320, SolarEdge Optimizer
SHIPS 1 to 2 WEEKS
Your Price: $7,600.00
4.6kW Solar Kit Panasonic 330, SMA Inverter
SHIPS 1 to 2 WEEKS
Your Price: $7,700.00
4 kW Solar Kit Silfab SLA310M Enphase MicroInverter 4kW PV Kit Solaria 355, Enphase IQ Micro 4 kW Solar Kit Silfab SLA310M SolarEdge
4 kW PV Kit Silfab 310 Black, Enphase IQ Micro
SHIPS 1 to 2 WEEKS
Your Price: $7,800.00
4 kW PV Kit Solaria 355, Enphase IQ Micro
SHIPS 1 to 2 WEEKS
Your Price: $8,000.00
4 kW PV Kit Silfab 310 Black, SolarEdge Optimizer
SHIPS 1 to 2 WEEKS
Your Price: $8,800.00
4kW PV Kit Solaria 350, SolarEdge Inverter-Optimizer 4.6 kW Solar Kit Solar Kit Panasonic 330, SolarEdge inverter optimizer, rooftop mount 4 kW Solar Kit Solar Kit Panasonic 330, Enphase IQ7X-96 240V
4.2 kW PV Kit Solaria 350, SolarEdge HD Optimizer
SHIPS 1 to 2 WEEKS
Your Price: $8,800.00
4.6kW Solar Kit Panasonic 330, SolarEdge Optimizer
SHIPS 1 to 2 WEEKS
Your Price: $9,500.00
4.6 kW Solar Kit Panasonic 330, Enphase IQ7X-96 240V
SHIPS 1 to 2 WEEKS
Your Price: $10,000.00
   
 

What you get with a 4kW Solar Kit

  • Up to 15 solar panels generate 500 kWh / mo (varies)
  • UL Certified with up to 30 year manufacturer warranty
  • Grid-tied inverters, optimizers or micro-inverters
  • Mount on rooftop or ground (optional); up to 300 sf
  • Flat-rate shipping with lift-gate service to continental U.S.
  • Installation instructions
  • 24/7 performance monitoring via web and smartphone
  • Lifetime technical support
  • Qualifies for all tax credits, rebates and incentives
  • Add-on options for battery storage, ground mounting, EV charging, permit plan or full-service installation

Featuring daily updates with the lowest prices on solar panels, FreeCleanSolar has a big selection of affordable 4 kW PV systems for sale. These 4kW 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 options for rooftop or ground mount.

A 4kW Solar Kit requires up to 320 square feet of space. 4kW or 4 kilowatts is 4,000 watts of DC direct current power. This could produce an estimated 500 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 4kW PV systems can generate.

4kW Battery Kits | 4kW Ground Mount


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