Seraphim Solar — China
SRP 420W B All-Black
The Seraphim Solar SRP 420W B All-Black is a 420W PERC solar panel with 20.0% efficiency. Backed by a 17-year warranty.
Standard TierFEOC: RestrictedBifacial
420W
Wattage
20%
Efficiency
PERC
Cell Type
17 years
Warranty
Full Specifications
- Brand
- Seraphim Solar
- Model
- SRP 420W B All-Black
- Series
- SRP
- Wattage
- 420W
- Module Efficiency
- 20%
- Cell Type
- PERC
- Dimensions
- 66-80" x 39-41"
- Weight
- 48 lbs
- Warranty
- 17 years
- Est. Price Per Watt
- $2.25
- Est. 7kW System Cost
- $15,750
- Est. 10kW System Cost
- $22,500
- Temperature Coefficient
- -0.35%/°C
- Bifacial
- Yes
- Origin
- China
- FEOC Status
- fail
Other Seraphim Solar Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| SRP 455W D | 455W | 21.1% | PERC | $2.58 |
| Sephia 455W D | 455W | 21.1% | PERC | $2.58 |
| SRP 450W C All-Black | 450W | 21% | N-Type TOPCon | $2.55 |
| Sephia 450W C All-Black | 450W | 21% | N-Type TOPCon | $2.55 |
| SRP 440W E Pro | 440W | 20.7% | N-Type TOPCon | $2.46 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| Maxeon Maxeon 3 450W D Plus | 450W | 23.3% | $4.61 |
| Maxeon Maxeon 6 450W D Plus | 450W | 23.3% | $4.61 |
| Maxeon Maxeon 7 450W D Plus | 450W | 23.3% | $4.61 |
| Maxeon Maxeon Air 450W D Plus | 450W | 23.3% | $4.61 |
Frequently Asked Questions
How much does a 420W Seraphim Solar SRP 420W B All-Black cost?
The Seraphim Solar SRP 420W B All-Black costs approximately $945 per panel ($$2.25/W). A typical 7kW system using this panel would cost around $15,750 before incentives.
⚠ The 30% Federal Solar Tax Credit (48E/ITC) expired July 4, 2026.
Selecting 30% ITC assumes you began construction before this deadline. Most new purchases no longer qualify.Learn about your options after the deadline →
Is the Seraphim Solar SRP 420W B All-Black a good solar panel?
The Seraphim Solar SRP 420W B All-Black has 20% efficiency and a 17 years warranty, placing it in the standard tier. This is a solid mid-range panel suitable for most residential installations.
How many Seraphim Solar SRP 420W B All-Black panels do I need?
For a typical 7kW residential system, you'd need approximately 17 panels. For a 10kW system, plan for about 24 panels. The exact number depends on your roof space, energy usage, and local sun hours.