Solar Panel Comparison
JA Solar DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr vs REC Group Alpha Pure-R 430W
Both panels are rated at 430W.
Alpha Pure-R 430W has a higher efficiency of 22.3% versus 21.6% for the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr.
They use different cell technologies: DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr uses N-type TOPCon GFI (Gapless) Bifacial Half-Cut, while Alpha Pure-R 430W uses HJT (Heterojunction).
Here's how they compare across all key specifications.
Spec
JA Solar
DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr
430W
21.6% efficiency
REC Group
Alpha Pure-R 430W
430W
22.3% efficiency
Full Specification Comparison
| Spec | DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr | Alpha Pure-R 430W |
|---|---|---|
| Performance | ||
| Power Output | 430 W | 430 W |
| Efficiency | 21.6% | 22.3% |
| Cell Type | N-type TOPCon GFI (Gapless) Bifacial Half-Cut | HJT (Heterojunction) |
| Temp. Coeff. | -0.29 %/°C | -0.24 %/°C |
| Number of Cells | 108 | 80 |
| Bifacial | Yes | No |
| Electrical | ||
| Voc | 39.68 V | 59.4 V |
| Vmp | 33.53 V | 50 V |
| Isc | 13.74 A | 8.91 A |
| Imp | 12.83 A | 8.4 A |
| Max System Voltage | 1500 V | 1000 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1722x1134x30 mm | 1730x1118x30 mm |
| Weight | 21 kg | 21.5 kg |
| Frame Colour | Black | Black |
| Connector Type | MC4-EVO2 | MC4 |
| Junction Box IP | IP68 | — |
| Warranty & Certification | ||
| Product Warranty | 25 | 20 years |
| Power Warranty | 30 years linear (0.4%/yr) | 25 years (92% min, 0.25%/yr) |
| MCS Certified | Yes | Yes |
| Certifications | IEC 61215, IEC 61730, UL 61215, UL 61730, ISO 9001, ISO 14001 | IEC 61215, IEC 61730, RoHS |
| Pricing (UK) | ||
| Retail Price | — | £142.00 |
| Price per Watt | — | £0.330/W |
Frequently Asked Questions
Which is more efficient, the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr or the Alpha Pure-R 430W?
The Alpha Pure-R 430W is more efficient at 22.3%, compared to 21.6% for the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr. Higher efficiency means more power generated per square metre of roof space.
Which panel produces more power, the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr or the Alpha Pure-R 430W?
Both panels are rated at the same output of 430W.
Which solar panel should I choose for my home — the DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr or the Alpha Pure-R 430W?
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
DeepBlue 4.0 GB 430W N-Type TOPCon GFI Bifacial Dual Glass 25yr
430W · 21.6% efficiency · N-type TOPCon GFI (Gapless) Bifacial Half-Cut
View full specs →REC Group
Alpha Pure-R 430W
430W · 22.3% efficiency · HJT (Heterojunction)
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.