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Power Your Business and Home with a One-Stop Clean Energy Solution

The Sunchees 50kW off-grid Solar System is designed for factories, shops, villas, farms, and more, covering both commercial and residential energy needs. Delivering approximately 70,000 kWh annually, it significantly reduces electricity bills while ensuring reliable power even during outages. With installations in over 200 countries and regions, Sunchees provides global expertise backed by end-to-end service and robust technical support.

This is an off-grid solar power system designed for self-sufficiency. It powers household or commercial loads directly from solar panels and batteries. The grid connection is used only as a backup to charge the batteries when solar power is insufficient.

Unlike a hybrid system, it does not export excess energy back to the grid as it lacks grid-tied functionality and bi-directional inverters. In the industry, this setup is often referred to as “Off-Grid with Grid Backup”.

Why Choose the Sunchees 50kW Off-Grid with Grid Backup Solar System?

What Is Included With The Solar Kits!

• 1 X 50000W 360Vdc 220/380Vac Inverter 
• 80 X 600 Watt Monocrystalline Solar Panels
• 1 X 360V/300AH  Lifepo4 Battery 
• 2  X MPPT charge controller
• 1 X PC10-360V PV combiner
• 80 X Sets of Mounting Brackets 
• 1 X 6mm2 PV cable 200M，MC4 terminal connectors
• 2 X  25mm2*1M battery cable

SP600W mono solar panel

Max power	600w
Solar Cell	Monocrystalline
Maximum Power Current (IMP)	14.3A
MaximumPowerVoltage(VMP)	43.32V
Open Circuit Voltage(VOC)	51.45V
Product Dimension	2279 * 1134 *30 mm
Warranty	25Years
Certificates	TUV、IEC,CE

Installation Area Requirements

• Each solar panel area: 2.3m²
   

• Total area for 80 panels: ~184m²
   

Recommended area (including spacing for ventilation and maintenance): ~240m²

Tailored Solutions for Diverse Applications

Typical Use Cases and Power Load Examples

Commercial and Industrial

Luxury Villas

Agriculture

Note: System supports peak loads up to 55–60kW (short-term). Nighttime load requires separate sizing based on battery capacity.

Related Articles

• How Many Solar Panels Needed for 50kW? Full Guide →

How does the Off-Grid with Grid Backup system work:

• This system not only has solar power system function,but also has city grid complement function and UPS function
• At daytime,the solar panels will generate the electricity to charge the battery bank through solar charge controller and the inverter will convert battery DC power into AC power and take the loads.
• At nighttime,with fully charged battery bank,the inverter will convert battery DC power into AC power and take the loads
• When there is no sunshine and battery power is used out,the inverter will automatically switch to use city grid power and take the loads

Packing details:

• Solar panels are packed in carton and pallet
• PV combiners and inverter are packed in wooden box
• Solar charge controller,gel battery,and cables are packed in carton
• Solar panel racks are in cartons and bulk packing​

Global Project Case Studies

100kw Solar system Nigeria case:

Company profile

Sunchees was founded in 2008, head office and factory is located in Foshan, Guangdong. China,but its sales network has spread to more than 100 countries and regions around the world.

Main business: solar power system one stop solutions,  solar inverter , solar air conditioner system, solar street light system . solar DC power system ect .

Sunchees products are widely used in home, agriculture, industry, finance, electric power, transportation, security, new energy. Its stable and excellent performance have been widely recognized.

Warranty policy:

• Solar panel has 10 years warranty,during warranty if any quality problem,we will ship new one for replacement.
• lithium  battery has 3 years warranty,during warranty if any quality problem,we will ship new one for replacement.Quality problem means acid leakage or irregular shape.
• Inverter,charge controller,and PV combiner have 2 years warranty,during warranty if any quality problem,we will ship free PCB for replacement

International Certifications and Service Guarantee

• Certified with CE, IEC, UL, and more
   

• Successful projects in 200+ countries
   

• 25-year warranty for solar modules, 5–10 years for inverters, 10 years for batteries
   

• Full support from design to installation, including remote technical assistance and video guides

Sunchees operates a 1,000 km² manufacturing facility, develops in-house inverters and lithium batteries for 100% system compatibility and lower failure rates, and offers OEM customization including branded solar panels and tailored solar systems with air conditioning solutions.

Government Incentives and Policy Support