Solar Panel Comparison
Maxeon / SunPower Maxeon 7 475W vs Perlight Solar Delta 425W Total Black Mono PERC
The Maxeon 7 475W delivers 475W, 50W more than the Delta 425W Total Black Mono PERC at 425W.
Maxeon 7 475W has a higher efficiency of 24% versus 21.4% for the Delta 425W Total Black Mono PERC.
They use different cell technologies: Maxeon 7 475W uses IBC (Interdigitated Back Contact) N-type, while Delta 425W Total Black Mono PERC uses Mono PERC.
Here's how they compare across all key specifications.
Spec
Maxeon / SunPower
Maxeon 7 475W
475W
24% efficiency
Perlight Solar
Delta 425W Total Black Mono PERC
425W
21.4% efficiency
Full Specification Comparison
| Spec | Maxeon 7 475W | Delta 425W Total Black Mono PERC |
|---|---|---|
| Performance | ||
| Power Output | 475 W | 425 W |
| Efficiency | 24% | 21.4% |
| Cell Type | IBC (Interdigitated Back Contact) N-type | Mono PERC |
| Temp. Coeff. | -0.27 %/°C | -0.35 %/°C |
| Number of Cells | 120 | 108 |
| Bifacial | No | No |
| Electrical | ||
| Voc | 44.47 V | — |
| Vmp | 38.06 V | — |
| Isc | 13.2 A | — |
| Imp | 12.48 A | — |
| Max System Voltage | 1000 V | 1500 V |
| Operating Temp | -40 to +85 °C | -40 to +85 °C |
| Physical | ||
| Dimensions | 1913x1035x35 mm | 1812x1096x30 mm |
| Weight | 21.1 kg | 20.8 kg |
| Frame Colour | Black | Black |
| Connector Type | MC4 compatible | MC4 |
| Warranty & Certification | ||
| Product Warranty | 40 years | 30 |
| Power Warranty | 40 years (92% yr25, 0.25%/yr) | 30 years linear (2% yr1, 0.55%/yr) |
| MCS Certified | No | Yes |
| Certifications | IEC 61215, IEC 61730 | IEC 61215, IEC 61730 |
| Pricing (UK) | ||
| Retail Price | — | £86.39 |
| Price per Watt | — | £0.203/W |
Frequently Asked Questions
Which is more efficient, the Maxeon 7 475W or the Delta 425W Total Black Mono PERC?
The Maxeon 7 475W is more efficient at 24%, compared to 21.4% for the Delta 425W Total Black Mono PERC. Higher efficiency means more power generated per square metre of roof space.
Which panel produces more power, the Maxeon 7 475W or the Delta 425W Total Black Mono PERC?
The Maxeon 7 475W has a higher rated output at 475W. This means fewer panels would be needed to reach the same system size compared to the Delta 425W Total Black Mono PERC.
Which solar panel should I choose for my home — the Maxeon 7 475W or the Delta 425W Total Black Mono PERC?
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.
Maxeon / SunPower
Maxeon 7 475W
475W · 24% efficiency · IBC (Interdigitated Back Contact) N-type
View full specs →Perlight Solar
Delta 425W Total Black Mono PERC
425W · 21.4% efficiency · Mono PERC
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.