DAS Solar — China
DAS 405W D Max
The DAS Solar DAS 405W D Max is a 405W N-Type TOPCon solar panel with 19.8% efficiency. Backed by a 12-year warranty.
Standard TierFEOC: Restricted
405W
Wattage
19.8%
Efficiency
N-Type TOPCon
Cell Type
12 years
Warranty
Full Specifications
- Brand
- DAS Solar
- Model
- DAS 405W D Max
- Series
- DAS
- Wattage
- 405W
- Module Efficiency
- 19.8%
- Cell Type
- N-Type TOPCon
- Dimensions
- 66-80" x 39-41"
- Weight
- 46 lbs
- Warranty
- 12 years
- Est. Price Per Watt
- $2.00
- Est. 7kW System Cost
- $14,000
- Est. 10kW System Cost
- $20,000
- Temperature Coefficient
- -0.25%/°C
- Bifacial
- No
- Origin
- China
- FEOC Status
- fail
Other DAS Solar Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| DAS 465W D | 465W | 21.6% | N-Type TOPCon | $2.45 |
| DAS 460W C All-Black | 460W | 21.5% | PERC | $2.42 |
| DAS 450W E Pro | 450W | 21.2% | PERC | $2.35 |
| DAS 450W B BF | 450W | 21.2% | N-Type TOPCon | $2.35 |
| DAS 445W D Plus | 445W | 21% | N-Type TOPCon | $2.30 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| SunPower Maxeon 435W A Ultra | 435W | 22.7% | $4.42 |
| SunPower Performance 435W A Ultra | 435W | 22.7% | $4.42 |
| SunPower X-Series 435W A Ultra | 435W | 22.7% | $4.42 |
| SunPower E-Series 435W A Ultra | 435W | 22.7% | $4.42 |
Frequently Asked Questions
How much does a 405W DAS Solar DAS 405W D Max cost?
The DAS Solar DAS 405W D Max costs approximately $810 per panel ($$2.00/W). A typical 7kW system using this panel would cost around $14,000 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 DAS Solar DAS 405W D Max a good solar panel?
The DAS Solar DAS 405W D Max has 19.8% efficiency and a 12 years warranty, placing it in the standard tier. This is a solid mid-range panel suitable for most residential installations.
How many DAS Solar DAS 405W D Max 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.