Tesla — US
Tesla T 405-D Max
The Tesla Tesla T 405-D Max is a 405W N-Type TOPCon solar panel with 19.7% efficiency. Made in US. Backed by a 25-year warranty.
Premium Tier🇺🇸 Domestic Content Bonus Eligible
405W
Wattage
19.7%
Efficiency
N-Type TOPCon
Cell Type
25 years
Warranty
Full Specifications
- Brand
- Tesla
- Model
- Tesla T 405-D Max
- Series
- Tesla T
- Wattage
- 405W
- Module Efficiency
- 19.7%
- Cell Type
- N-Type TOPCon
- Dimensions
- 66-80" x 39-41"
- Weight
- 46 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $2.89
- Est. 7kW System Cost
- $20,230
- Est. 10kW System Cost
- $28,900
- Temperature Coefficient
- -0.25%/°C
- Bifacial
- No
- Origin
- US
- FEOC Status
- pass
Other Tesla Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| Tesla T 455W E Pro | 455W | 21.6% | N-Type TOPCon | $3.78 |
| Tesla T 450W D Plus | 450W | 21.4% | PERC | $3.69 |
| Tesla T 445W C | 445W | 21.2% | N-Type TOPCon | $3.59 |
| Tesla T 445W A Ultra | 445W | 21.2% | PERC | $3.59 |
| Tesla T 440W E Max | 440W | 21% | N-Type TOPCon | $3.50 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| SunPower Maxeon 435W A Ultra | 435W | 22.7% | $4.42 |
| Maxeon 3 435W E Max | 435W | 22.7% | $4.29 |
| SunPower Maxeon 430W E Max | 430W | 22.6% | $4.38 |
| SunPower Maxeon 430W C Black | 430W | 22.6% | $4.38 |
Frequently Asked Questions
How much does a 405W Tesla Tesla T 405-D Max cost?
The Tesla Tesla T 405-D Max costs approximately $1170 per panel ($$2.89/W). A typical 7kW system using this panel would cost around $20,230 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 Tesla Tesla T 405-D Max a good solar panel?
The Tesla Tesla T 405-D Max has 19.7% efficiency and a 25 years warranty, placing it in the premium tier. This is a solid mid-range panel suitable for most residential installations. It also qualifies for the domestic content bonus under the Inflation Reduction Act.
How many Tesla Tesla T 405-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.