Solar Panel Comparison
AIKO Neostar 2S+ 510W Dual Glass All Black Gen 2 vs Eurener Nexa 500W TOPCon All Black Bifacial
The Neostar 2S+ 510W Dual Glass All Black Gen 2 delivers 510W, 10W more than the Nexa 500W TOPCon All Black Bifacial at 500W.
Nexa 500W TOPCon All Black Bifacial has a higher efficiency of 23.1% versus 23% for the Neostar 2S+ 510W Dual Glass All Black Gen 2.
They use different cell technologies: Neostar 2S+ 510W Dual Glass All Black Gen 2 uses N-type ABC (All-Back Contact), while Nexa 500W TOPCon All Black Bifacial uses N-type TOPCon.
Here's how they compare across all key specifications.
Spec
AIKO
Neostar 2S+ 510W Dual Glass All Black Gen 2
510W
23% efficiency
Eurener
Nexa 500W TOPCon All Black Bifacial
500W
23.1% efficiency
Full Specification Comparison
| Spec | Neostar 2S+ 510W Dual Glass All Black Gen 2 | Nexa 500W TOPCon All Black Bifacial |
|---|---|---|
| Performance | ||
| Power Output | 510 W | 500 W |
| Efficiency | 23% | 23.1% |
| Cell Type | N-type ABC (All-Back Contact) | N-type TOPCon |
| Temp. Coeff. | -0.26 %/°C | -0.3 %/°C |
| Number of Cells | 120 | 144 |
| Bifacial | Yes | Yes |
| Electrical | ||
| Voc | 45.32 V | 43.25 V |
| Vmp | 38.2 V | 35.88 V |
| Isc | 14.23 A | 14.52 A |
| Imp | 13.49 A | 13.94 A |
| Max System Voltage | 1500 V | 1500 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1954x1134x30 mm | 1909x1134x30 mm |
| Weight | 27.2 kg | 27 kg |
| Frame Colour | Black | Black |
| Connector Type | MC4 EVO2 | MC4 |
| Warranty & Certification | ||
| Product Warranty | 25 | 30 |
| Power Warranty | 30 years linear | 30 years linear |
| MCS Certified | Yes | Yes |
| Certifications | IEC 61215, IEC 61730 | IEC 61215, IEC 61730 |
| Pricing (UK) | ||
| Retail Price | £78.52 | — |
| Price per Watt | £0.154/W | — |
Frequently Asked Questions
Which is more efficient, the Neostar 2S+ 510W Dual Glass All Black Gen 2 or the Nexa 500W TOPCon All Black Bifacial?
The Nexa 500W TOPCon All Black Bifacial is more efficient at 23.1%, compared to 23% for the Neostar 2S+ 510W Dual Glass All Black Gen 2. Higher efficiency means more power generated per square metre of roof space.
Which panel produces more power, the Neostar 2S+ 510W Dual Glass All Black Gen 2 or the Nexa 500W TOPCon All Black Bifacial?
The Neostar 2S+ 510W Dual Glass All Black Gen 2 has a higher rated output at 510W. This means fewer panels would be needed to reach the same system size compared to the Nexa 500W TOPCon All Black Bifacial.
Which solar panel should I choose for my home — the Neostar 2S+ 510W Dual Glass All Black Gen 2 or the Nexa 500W TOPCon All Black Bifacial?
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.
AIKO
Neostar 2S+ 510W Dual Glass All Black Gen 2
510W · 23% efficiency · N-type ABC (All-Back Contact)
View full specs →Eurener
Nexa 500W TOPCon All Black Bifacial
500W · 23.1% efficiency · N-type TOPCon
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.