Q CELLS vs LONGi Solar Panels: Detailed Comparison (2026)

Last updated: February 1, 2026

Q CELLS and LONGi solar panels compared. Korean vs Chinese manufacturing, warranty, technology, and best use cases.

Q CELLS (Hanwha Q CELLS, Korean-owned) and LONGi (Chinese) represent two different approaches to the residential solar market. Q CELLS offers 4 models up to 21.8% efficiency. LONGi offers 8 models up to 23.0% efficiency. Q CELLS has US manufacturing facilities (Georgia), while LONGi primarily manufactures in China.

Key Takeaways

• Q CELLS: 4 models, up to 21.8% efficiency, made in South Korea, Malaysia
• LONGi: 8 models, up to 23.0% efficiency, made in China
• Q CELLS has a manufacturing facility in Dalton, Georgia (US-made options)
• LONGi leads in advanced HPBC cell technology
• Both are Tier-1 bankable manufacturers with strong warranties
• Q CELLS US-made panels may qualify for IRA domestic content bonuses

Featured Models

LONGi Hi-MO 6 580W

Panel

LONGi Hi-MO 6 is a high-performance PERC mono half-cut panel delivering 580W with 22.3% efficiency, ideal for residentia...

22.3% eff 580W 12yr warranty

LONGi Hi-MO 7 590W

Panel

The Hi-MO 7 is LONGi's flagship residential panel using proprietary HPBC (Hybrid Passivated Back Contact) cell technolog...

22.8% eff 590W 12yr warranty

Q CELLS Q.TRON BLK M-G11+ 420W

Panel

The Q.TRON BLK is Q CELLS' flagship all-black N-type panel delivering 420W with a 25-year product warranty and sleek aes...

21.6% eff 420W 25yr warranty

Q CELLS Q.PEAK DUO BLK ML-G10+ 400W

Panel

The Q.PEAK DUO BLK is a proven all-black PERC panel from Q CELLS, offering 400W with the same 25-year product warranty....

20.9% eff 400W 25yr warranty

Frequently Asked Questions

Are Q CELLS really made in America?

Some Q CELLS panels are manufactured at their Dalton, Georgia facility, making them eligible for domestic content incentives. However, not all Q CELLS models are US-made — verify the specific model and manufacturing origin. Their Georgia facility is one of the largest solar panel factories in the Western Hemisphere.

Is LONGi a reliable brand?

LONGi is the world's largest solar manufacturer by market share and is consistently rated Bloomberg Tier-1. They have the scale and financial stability to honor long-term warranties. LONGi is also a leading researcher in solar cell technology, holding multiple world records for cell efficiency.