Q CELLS Review 2026
Q CELLS manufactures 4 models across solar panels. Efficiency range 20.4%–21.8%.
Headquartered in South Korea · Manufacturing in South Korea, Malaysia
Founded 1999 by Reiner Lemoine, Holger Feist, Anton Milner, Paul Grunow · Headquartered in Seoul, South Korea
Parent company: Hanwha Solutions Corporation
Listed: KRX:009830
Q CELLS at a glance
Certifications: IEC 61215 · IEC 61730 · UL 1703 · CEC Listed · Buy American Act
Warranty: 25-yr product · 25-yr performance
Key milestones
- 1999 Founded as Q-Cells AG in Bitterfeld-Wolfen, Germany
- 2012 Acquired by Hanwha Group of South Korea
- 2019 Opened US factory in Dalton, Georgia
- 2023 Opened second US factory in Cartersville, Georgia
Source: www.qcells.com/us/about-us · Last updated 2026-05-27
Q CELLS Pros & Cons (data-driven)
+ Pros
- ✓ Average panel efficiency 21.2% exceeds industry baseline 21%
- ✓ Average product warranty 21.8yr exceeds industry baseline 12yr
- ✓ Low annual degradation 0.4%/yr (industry average ~0.5%/yr)
- ✓ 100% of SKUs triple-verified against manufacturer datasheets
− Cons
- ✗ Distributor and installer pricing varies — direct retail rarely available
- ✗ Some 2026 models depend on regional distributor availability
Pros and cons calculated against industry baselines: 21% panel efficiency, 12yr panel warranty, -0.32%/°C temp coeff, 90% battery RTE.
Current Q CELLS Product List (4)
Solar Panels (4)
| Model | Wattage | Efficiency | Warranty | Verified | Score | Details |
|---|---|---|---|---|---|---|
| Q.TRON 425W | 425W | 21.8% | 25/25 yr | ✓ | 96 (A) | View → |
| Q.TRON BLK M-G2+ 420W | 420W | 21.6% | 25/25 yr | ✓ | 95 (A) | View → |
| Q.PEAK DUO BLK ML-G10+ 400W | 400W | 20.9% | 25/25 yr | ✓ | 88 (B+) | View → |
| Q.PEAK DUO 370W | 370W | 20.4% | 12/25 yr | ✓ | 72 (B) | View → |
Spec Sheet Downloads
4 manufacturer-published datasheets available for Q CELLS products. All links go to the official PDF on the manufacturer's website.
- PDF Q CELLS Q.TRON BLK M-G2+ 420W datasheet →https://us.qcells.com/q-tron-blk-m-g2/
- PDF Q CELLS Q.PEAK DUO BLK ML-G10+ 400W datasheet →https://us.qcells.com/wp-content/uploads/2023/06/Qcells_Data_sheet_Q.PEAK_DUO_BLK_ML-G10_series_385-410_DA_2023-01_Rev03_NA.pdf
- PDF Q CELLS Q.TRON 425W datasheet →https://us.qcells.com/q-tron-blk-m-g2/
- PDF Q CELLS Q.PEAK DUO 370W datasheet →https://us.qcells.com/wp-content/uploads/2023/07/Qcells_Data_sheet_Q.PEAK_DUO_BLK-G10-AC_series_360-365_2022-11_Rev02_NA.pdf
Recent Q CELLS News
SolarSpec does not republish third-party news. For the latest Q CELLS news — product launches, financial filings, recalls, supply-chain updates — search Google News directly.
Search Q CELLS news on Google News →Related Brands
Brands with comparable SolarSpec scores in similar product categories.
Frequently Asked Questions
What is the SolarSpec Score for Q CELLS?
Q CELLS earns a SolarSpec Score of 88/100 (Grade B+) based on the weighted average of all 4 models in their 2026 lineup. The score combines efficiency, warranty, temperature coefficient, and verification status. See our /methodology/ page for the full formula.
How many solar products does Q CELLS offer in 2026?
Q CELLS offers 4 products in their 2026 lineup: 4 solar panels.
What is the most efficient Q CELLS solar panel?
The most efficient Q CELLS solar panel is the Q.TRON 425W at 21.8% efficiency with 425W output. Q CELLS panels range from 20.4% to 21.8% efficiency across 4 models.
What warranty does Q CELLS offer on solar panels?
Q CELLS offers up to 25-year product warranty and up to 25-year performance warranty. Average annual degradation across the lineup is 0.4%.
Where are Q CELLS solar panels manufactured?
Q CELLS solar panels are manufactured in South Korea and Malaysia.
Where can I download Q CELLS datasheets?
We have direct manufacturer-published datasheet links for 4 of 4 Q CELLS products. See the Spec Sheet Downloads section below for direct PDF links.
How we score brands
Every Q CELLS model in our catalog is scored 0-100 using a transparent formula: efficiency (25 pts), product warranty (20 pts), performance warranty bonus (3 pts), temperature coefficient (12 pts), and datasheet verification (5 pts), on a 50-point baseline. The brand-level score is the simple average across all 4 models.
Read the full SolarSpec methodology →