Solar Panel Comparison
JA Solar Deep Blue 3.0 420W PERC vs Maxeon / SunPower Maxeon 6 DC 440W
The Maxeon 6 DC 440W delivers 440W, 20W more than the Deep Blue 3.0 420W PERC at 420W.
Maxeon 6 DC 440W has a higher efficiency of 22.8% versus 21% for the Deep Blue 3.0 420W PERC.
They use different cell technologies: Deep Blue 3.0 420W PERC uses Mono PERC MBB Half-Cell, while Maxeon 6 DC 440W uses IBC (Interdigitated Back Contact).
On price, the Deep Blue 3.0 420W PERC is cheaper by £592.19.
Here's how they compare across all key specifications.
Spec
JA Solar
Deep Blue 3.0 420W PERC
420W
21% efficiency
Maxeon / SunPower
Maxeon 6 DC 440W
440W
22.8% efficiency
Full Specification Comparison
| Spec | Deep Blue 3.0 420W PERC | Maxeon 6 DC 440W |
|---|---|---|
| Performance | ||
| Power Output | 420 W | 440 W |
| Efficiency | 21% | 22.8% |
| Cell Type | Mono PERC MBB Half-Cell | IBC (Interdigitated Back Contact) |
| Temp. Coeff. | — | -0.29 %/°C |
| Number of Cells | 108 | 66 |
| Bifacial | No | No |
| Electrical | ||
| Voc | — | 48.2 V |
| Vmp | 37.73 V | 40.5 V |
| Isc | — | 11.58 A |
| Imp | — | 10.87 A |
| Max System Voltage | 1000 V | 1000 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1762x1134x30 mm | 1872x1032x40 mm |
| Weight | 20 kg | 20.9 kg |
| Frame Colour | Black | Black |
| Connector Type | MC4 | EVO2 |
| Junction Box IP | — | IP68 |
| Warranty & Certification | ||
| Product Warranty | 12 years | 25 years |
| Power Warranty | 25 years linear | 25 years / 92% (extendable to 40yr) |
| MCS Certified | Yes | No |
| Certifications | IEC 61215, IEC 61730 | IEC 61215, IEC 61730, UL 61730, ISO 9001, ISO 14001, IEC 62716, IEC 61701, MIL-STD-810G |
| Pricing (UK) | ||
| Retail Price | £57.81 | £650.00 |
| Price per Watt | £0.138/W | £1.477/W |
Frequently Asked Questions
Which is more efficient, the Deep Blue 3.0 420W PERC or the Maxeon 6 DC 440W?
The Maxeon 6 DC 440W is more efficient at 22.8%, compared to 21% for the Deep Blue 3.0 420W PERC. Higher efficiency means more power generated per square metre of roof space.
Which panel produces more power, the Deep Blue 3.0 420W PERC or the Maxeon 6 DC 440W?
The Maxeon 6 DC 440W has a higher rated output at 440W. This means fewer panels would be needed to reach the same system size compared to the Deep Blue 3.0 420W PERC.
Is the Deep Blue 3.0 420W PERC or Maxeon 6 DC 440W better value for money?
The Deep Blue 3.0 420W PERC is priced lower at £57.81 per panel, saving £592.19 per panel. However, value depends on the full system cost, efficiency, and warranty — use our solar cost calculator to compare total installation costs.
Which solar panel should I choose for my home — the Deep Blue 3.0 420W PERC or the Maxeon 6 DC 440W?
The right choice depends on your priorities. If maximising energy generation per panel is key, consider efficiency and wattage. If budget is your main concern, compare price per watt. Both panels have their merits — use our Solar Estimator to see how each would perform in your specific home setup.
JA Solar
Deep Blue 3.0 420W PERC
420W · 21% efficiency · Mono PERC MBB Half-Cell
View full specs →Maxeon / SunPower
Maxeon 6 DC 440W
440W · 22.8% efficiency · IBC (Interdigitated Back Contact)
View full specs →More Comparisons
See how these panels perform in your home
Use our Solar Estimator to calculate system size, installation cost, and payback period — with either of these panels as a starting point.