BYD — China
Premium 400-B Silver
The BYD Premium 400-B Silver is a 400W PERC solar panel with 19.1% efficiency. Backed by a 12-year warranty.
Budget TierFEOC: Restricted
400W
Wattage
19.1%
Efficiency
PERC
Cell Type
12 years
Warranty
Full Specifications
- Brand
- BYD
- Model
- Premium 400-B Silver
- Series
- Premium
- Wattage
- 400W
- Module Efficiency
- 19.1%
- Cell Type
- PERC
- Dimensions
- 66-80" x 39-41"
- Weight
- 46 lbs
- Warranty
- 12 years
- Est. Price Per Watt
- $1.71
- Est. 7kW System Cost
- $11,970
- Est. 10kW System Cost
- $17,100
- Temperature Coefficient
- -0.35%/°C
- Bifacial
- No
- Origin
- China
- FEOC Status
- fail
Other BYD Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| Premium 460W D Plus | 460W | 21% | PERC | $2.38 |
| Premium 455W C | 455W | 20.8% | N-Type TOPCon | $2.31 |
| Premium 450W A Ultra | 450W | 20.7% | PERC | $2.27 |
| Premium 445W E Max | 445W | 20.5% | N-Type TOPCon | $2.20 |
| Premium 445W B All-Black | 445W | 20.5% | PERC | $2.20 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| SunPower Maxeon 430W E Max | 430W | 22.6% | $4.38 |
| SunPower Maxeon 430W C Black | 430W | 22.6% | $4.38 |
| Panasonic HIT 425W E Pro | 425W | 22.5% | $4.18 |
| Maxeon 3 430W E HC | 430W | 22.5% | $4.19 |
Frequently Asked Questions
How much does a 400W BYD Premium 400-B Silver cost?
The BYD Premium 400-B Silver costs approximately $684 per panel ($$1.71/W). A typical 7kW system using this panel would cost around $11,970 before incentives.
⚠ The 30% federal solar tax credit has ended — Section 25D expired December 31, 2025, and the Section 48E construction-start deadline passed 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 BYD Premium 400-B Silver a good solar panel?
The BYD Premium 400-B Silver has 19.1% efficiency and a 12 years warranty, placing it in the budget tier. This is a solid mid-range panel suitable for most residential installations.
How many BYD Premium 400-B Silver panels do I need?
For a typical 7kW residential system, you'd need approximately 18 panels. For a 10kW system, plan for about 25 panels. The exact number depends on your roof space, energy usage, and local sun hours.