Solar Panel Comparison
JA Solar Deep Blue 3.0 420W PERC vs REC Group Alpha Pure-R 430W
The Alpha Pure-R 430W delivers 430W, 10W more than the Deep Blue 3.0 420W PERC at 420W.
Alpha Pure-R 430W has a higher efficiency of 22.3% 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 Alpha Pure-R 430W uses HJT (Heterojunction).
On price, the Deep Blue 3.0 420W PERC is cheaper by £84.19.
Here's how they compare across all key specifications.
Full Specification Comparison
| Spec | Deep Blue 3.0 420W PERC | Alpha Pure-R 430W |
|---|---|---|
| Performance | ||
| Power Output | 420 W | 430 W |
| Efficiency | 21% | 22.3% |
| Cell Type | Mono PERC MBB Half-Cell | HJT (Heterojunction) |
| Temp. Coeff. | — | -0.24 %/°C |
| Number of Cells | 108 | 80 |
| Bifacial | No | No |
| Electrical | ||
| Voc | — | 59.4 V |
| Vmp | 37.73 V | 50 V |
| Isc | — | 8.91 A |
| Imp | — | 8.4 A |
| Max System Voltage | 1000 V | 1000 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1762x1134x30 mm | 1730x1118x30 mm |
| Weight | 20 kg | 21.5 kg |
| Frame Colour | Black | Black |
| Connector Type | MC4 | MC4 |
| Warranty & Certification | ||
| Product Warranty | 12 years | 20 years |
| Power Warranty | 25 years linear | 25 years (92% min, 0.25%/yr) |
| MCS Certified | Yes | Yes |
| Certifications | IEC 61215, IEC 61730 | IEC 61215, IEC 61730, RoHS |
| Pricing (UK) | ||
| Retail Price | £57.81 | £142.00 |
| Price per Watt | £0.138/W | £0.330/W |
Frequently Asked Questions
Which is more efficient, the Deep Blue 3.0 420W PERC or the Alpha Pure-R 430W?
The Alpha Pure-R 430W is more efficient at 22.3%, 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 Alpha Pure-R 430W?
The Alpha Pure-R 430W has a higher rated output at 430W. 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 Alpha Pure-R 430W better value for money?
The Deep Blue 3.0 420W PERC is priced lower at £57.81 per panel, saving £84.19 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 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
Deep Blue 3.0 420W PERC
420W · 21% efficiency · Mono PERC MBB Half-Cell
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.