Solar Panel Comparison
JA Solar Deep Blue 3.0 420W PERC vs Renogy N-Type 320W Monocrystalline Solar Panel (2-Pack)
The Deep Blue 3.0 420W PERC delivers 420W, 100W more than the N-Type 320W Monocrystalline Solar Panel (2-Pack) at 320W.
N-Type 320W Monocrystalline Solar Panel (2-Pack) has a higher efficiency of 22.2% 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 N-Type 320W Monocrystalline Solar Panel (2-Pack) uses N-type Monocrystalline 18BB.
On price, the Deep Blue 3.0 420W PERC is cheaper by £263.18.
Here's how they compare across all key specifications.
Spec
JA Solar
Deep Blue 3.0 420W PERC
420W
21% efficiency
Renogy
N-Type 320W Monocrystalline Solar Panel (2-Pack)
320W
22.2% efficiency
Full Specification Comparison
| Spec | Deep Blue 3.0 420W PERC | N-Type 320W Monocrystalline Solar Panel (2-Pack) |
|---|---|---|
| Performance | ||
| Power Output | 420 W | 320 W |
| Efficiency | 21% | 22.2% |
| Cell Type | Mono PERC MBB Half-Cell | N-type Monocrystalline 18BB |
| Temp. Coeff. | — | -0.29 %/°C |
| Number of Cells | 108 | — |
| Bifacial | No | No |
| Electrical | ||
| Voc | — | 43.82 V |
| Vmp | 37.73 V | 37.85 V |
| Isc | — | 8.92 A |
| Imp | — | 8.46 A |
| Max System Voltage | 1000 V | 1000 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1762x1134x30 mm | 1640x880x35 mm |
| Weight | 20 kg | — |
| Frame Colour | Black | Silver |
| Connector Type | MC4 | MC4 |
| Junction Box IP | — | IP68 |
| Warranty & Certification | ||
| Product Warranty | 12 years | 10 |
| Power Warranty | 25 years linear | 25 years (power) |
| MCS Certified | Yes | No |
| Certifications | IEC 61215, IEC 61730 | IEC 61215, IEC 61730 |
| Pricing (UK) | ||
| Retail Price | £57.81 | £320.99 |
| Price per Watt | £0.138/W | £1.003/W |
Frequently Asked Questions
Which is more efficient, the Deep Blue 3.0 420W PERC or the N-Type 320W Monocrystalline Solar Panel (2-Pack)?
The N-Type 320W Monocrystalline Solar Panel (2-Pack) is more efficient at 22.2%, 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 N-Type 320W Monocrystalline Solar Panel (2-Pack)?
The Deep Blue 3.0 420W PERC has a higher rated output at 420W. This means fewer panels would be needed to reach the same system size compared to the N-Type 320W Monocrystalline Solar Panel (2-Pack).
Is the Deep Blue 3.0 420W PERC or N-Type 320W Monocrystalline Solar Panel (2-Pack) better value for money?
The Deep Blue 3.0 420W PERC is priced lower at £57.81 per panel, saving £263.18 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 N-Type 320W Monocrystalline Solar Panel (2-Pack)?
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 →Renogy
N-Type 320W Monocrystalline Solar Panel (2-Pack)
320W · 22.2% efficiency · N-type Monocrystalline 18BB
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.