Solar Panel Comparison
Eurener Nexa 450W TOPCon All Black vs REC Group Alpha Pure-R 430W
The Nexa 450W TOPCon All Black delivers 450W, 20W more than the Alpha Pure-R 430W at 430W.
Nexa 450W TOPCon All Black has a higher efficiency of 23% versus 22.3% for the Alpha Pure-R 430W.
They use different cell technologies: Nexa 450W TOPCon All Black uses N-type TOPCon, while Alpha Pure-R 430W uses HJT (Heterojunction).
Here's how they compare across all key specifications.
Spec
Eurener
Nexa 450W TOPCon All Black
450W
23% efficiency
REC Group
Alpha Pure-R 430W
430W
22.3% efficiency
Full Specification Comparison
| Spec | Nexa 450W TOPCon All Black | Alpha Pure-R 430W |
|---|---|---|
| Performance | ||
| Power Output | 450 W | 430 W |
| Efficiency | 23% | 22.3% |
| Cell Type | N-type TOPCon | HJT (Heterojunction) |
| Temp. Coeff. | -0.3 %/°C | -0.24 %/°C |
| Number of Cells | 108 | 80 |
| Bifacial | No | No |
| Electrical | ||
| Voc | 39.33 V | 59.4 V |
| Vmp | 32.71 V | 50 V |
| Isc | 14.52 A | 8.91 A |
| Imp | 13.76 A | 8.4 A |
| Max System Voltage | 1500 V | 1000 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1724x1134x30 mm | 1730x1118x30 mm |
| Weight | 22 kg | 21.5 kg |
| Frame Colour | Black | Black |
| Connector Type | MC4 | MC4 |
| Warranty & Certification | ||
| Product Warranty | 25 | 20 years |
| Power Warranty | 30 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 | — | £142.00 |
| Price per Watt | — | £0.330/W |
Frequently Asked Questions
Which is more efficient, the Nexa 450W TOPCon All Black or the Alpha Pure-R 430W?
The Nexa 450W TOPCon All Black is more efficient at 23%, compared to 22.3% for the Alpha Pure-R 430W. Higher efficiency means more power generated per square metre of roof space.
Which panel produces more power, the Nexa 450W TOPCon All Black or the Alpha Pure-R 430W?
The Nexa 450W TOPCon All Black has a higher rated output at 450W. This means fewer panels would be needed to reach the same system size compared to the Alpha Pure-R 430W.
Which solar panel should I choose for my home — the Nexa 450W TOPCon All Black 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.
Eurener
Nexa 450W TOPCon All Black
450W · 23% efficiency · N-type TOPCon
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.