Solar Modules.
From Our Factory to Your Project.
Vertically integrated manufacturer with 2GW capacity. TOPCon & HJT bifacial modules from 600W to 730W. Own factories, EPC projects, energy storage, and complete solar solutions for 50+ countries.
What We Manufacture
Own factory, own brand, and OEM partner to BNEF Tier-1. 2GW annual capacity with full manufacturer warranty and global logistics.
🧭Not sure which? 3-question decision toolSolar Modules
N-type TOPCon & HJT bifacial panels: 465W, 540W, 600W, 640W, 730W, 740W HJT. Own factory.
BC Technology
Back Contact (BC) next-gen modules: 680W. Highest efficiency, no front-side grid lines.
Small Modules
40W–320W range for solar lights, off-grid, RV, marine, monitoring, and OEM small-solar.
Energy Storage
LiFePO4 batteries & commercial BESS solutions. 6000+ cycle life.
Inverters
Microinverters & hybrid inverters with WiFi monitoring.
Complete Systems
Turnkey solar + storage packages. One order, one container, one supplier.
Max Module Power
HJT Cell Efficiency
Bifaciality Factor
Performance Warranty
Featured Products
Best-selling modules at competitive prices.
TOPCon N-Type SeriesOEM-readyJUSTSOLAR TOPCon 600W
N-type TOPCon bifacial mono module. Best-selling for commercial and utility projects.
TOPCon N-Type SeriesOEM-readyJUSTSOLAR TOPCon 640W
High-power N-type TOPCon bifacial module with G12 wafer. For large-scale ground-mount projects.
TOPCon N-Type SeriesOEM-readyJUSTSOLAR TOPCon 730W
Ultra-high power N-type TOPCon bifacial module. Maximum power density for utility-scale solar farms.
HJT Heterojunction SeriesOEM-readyJUSTSOLAR HJT 730W
Premium HJT heterojunction bifacial module. Superior temperature coefficient for hot climates.
HJT Heterojunction SeriesOEM-readyJUSTSOLAR HJT 740W
Flagship HJT heterojunction module. Highest efficiency + best hot-climate performance in our lineup.
BC (Back Contact) SeriesJUSTSOLAR BC 680W
Next-gen Back Contact (BC) cell technology. No front-side grid lines. Highest power density in the market.
Inside Our Factory
Fully automated production lines with robotic assembly, EL testing, and strict quality control.
Robotic Module Assembly
Cell Manufacturing Cleanroom
Quality Control Inspection
Automated Production Line
Full Production Overview
Headquarters & BIPV Facade
Watch Our Factory Tour
See our 2GW production lines, EL testing process, and quality control in action.
Global Projects
Delivering clean energy across continents.
Certified to International Standards
Trusted by Buyers in 50+ Countries
From trial orders to long-term partnerships. 1,000+ containers shipped since 2011.
12 hard metrics, every one verifiable
No marketing fluff. Each number here maps to public documentation, third-party audit, or contract terms we'll show you.
Why Buyers Trust JUSTSOLAR
We address the real concerns B2B solar buyers face when sourcing from China.
BNEF Tier-1 OEM Partner
Our Jiaxing lines also manufacture finished modules for BNEF Tier-1 brands under NDA. The strongest third-party validation of our quality and capability.
Own Factories, Not a Trader
2GW production capacity with own automated lines in China and Macedonia. We manufacture what we sell.
Pre-Shipment QA Testing
EL testing on every pallet. Flash test reports included. Third-party inspection (SGS, TUV, Bureau Veritas) always welcome.
Secure Payment Terms
Payment terms are confirmed in the formal PI. New buyers and most first orders use 100% T/T before shipment; exceptions require Frank's written approval.
Safe Shipping Guaranteed
Custom wooden crate packaging. FCL-only shipments. All Risk cargo insurance on every container. Under 1.2% damage rate.
Director Access, Always
Same direct contact from first quote to warranty claim. Director-level access for all B2B buyers. We never ghost our customers.
US Market Access
Southeast Asia contract manufacturing avoids anti-dumping duties. Macedonia factory for EU market. Compliant supply chain.
What Our Clients Say
Trusted by installers, distributors, and EPCs in 50+ countries.
“Frank responded to our inquiry within 30 minutes. The panels arrived in perfect condition — not a single crack. We have been ordering from JUST SOLAR for 3 years now.”
Carlos M.
SolBrasil Distribuidora
Director · Brazil
12 containers shipped
“The EL test reports before shipment gave us complete confidence. Quality is consistent container after container. Their TOPCon 600W performs exactly as specified.”
Ahmed K.
Gulf Solar Engineering
Project Manager · Saudi Arabia
8 containers shipped
“What sets JUST SOLAR apart is the complete solution — modules, inverters, batteries, mounting, all in one order. Saves us weeks of coordinating multiple suppliers.”
Patrick O.
SunPower East Africa
Managing Director · Kenya
6 containers shipped
“We needed BIS-certified panels for the Indian market. Frank sourced them with all documentation ready. The customs clearance was smooth thanks to correct HS codes.”
Rajesh P.
Aarav Solar Projects
VP Procurement · India
4 containers shipped
“Price dropped after our first order and Frank proactively informed us. That kind of honesty is rare. We now order 5 containers per quarter.”
Maria S.
MexSolar Trading
Purchasing Manager · Mexico
20+ containers shipped
“The container calculator on their website helped us optimize our order to fill a full 40HQ. No wasted space, lowest per-panel freight cost.”
James L.
PowerGrid Nigeria
Technical Director · Nigeria
3 containers shipped
How to Order
From first contact to delivery — a transparent process you can trust.
Inquiry
Tell us your specs, quantity, and destination
Quotation
Receive detailed PI within hours
PI Confirmed
Formal PI confirms price, payment, and lead time
Production
15-25 days manufacturing + EL testing
Pre-Ship QA
EL test, flash reports, and inspection before release
Delivery
Ocean freight + cargo insurance included
Frequently Asked Questions
How do I verify JUSTSOLAR is a real manufacturer?
What payment terms do you offer?
How do you ensure panel quality?
How many panels fit in a 40HQ container?
Can you supply to the US market without anti-dumping duties?
What happens if panels arrive damaged?
Explore More
Buy Wholesale
Factory pricing
TOPCon vs HJT
Tech guide
🌟 Middle East
GCC + MENA priority
🇸🇦 Saudi Arabia
Vision 2030 / NEOM
🇦🇪 UAE
DEWA + Jebel Ali
Solar Africa
CIF any port
Latin America
INMETRO cert
SE Asia
7-15 day ship
Europe (CBAM)
Macedonia factory
India
BIS certified
EPC Solutions
Turnkey projects
Why Us?
Factory vs trader
Shipping
FOB/CIF guide
Warranty
25+30 year
Certifications
TUV/IEC/CE
Quote Calc
Price estimate
Container Calc
Optimize load
Compare
Side by side
Ready to Start Your Project?
Whether you need modules, a complete EPC project, or a microgrid system — talk to Frank directly.
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