Tesla — US
Tesla T 425W B
The Tesla Tesla T 425W B is a 425W PERC solar panel with 20.4% efficiency. Made in US. Backed by a 25-year warranty.
Premium Tier🇺🇸 Domestic Content Bonus Eligible
425W
Wattage
20.4%
Efficiency
PERC
Cell Type
25 years
Warranty
Full Specifications
- Brand
- Tesla
- Model
- Tesla T 425W B
- Series
- Tesla T
- Wattage
- 425W
- Module Efficiency
- 20.4%
- Cell Type
- PERC
- Dimensions
- 66-80" x 39-41"
- Weight
- 48 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $3.22
- Est. 7kW System Cost
- $22,540
- Est. 10kW System Cost
- $32,200
- Temperature Coefficient
- -0.35%/°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 |
|---|---|---|---|
| Maxeon 3 455W E Pro | 455W | 23.5% | $4.72 |
| SunPower Maxeon 455W E Pro | 455W | 23.4% | $4.71 |
| Maxeon 3 450W D Plus | 450W | 23.3% | $4.61 |
| SunPower Maxeon 445W D Plus | 445W | 23.1% | $4.58 |
Frequently Asked Questions
How much does a 425W Tesla Tesla T 425W B cost?
The Tesla Tesla T 425W B costs approximately $1369 per panel ($$3.22/W). A typical 7kW system using this panel would cost around $22,540 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 425W B a good solar panel?
The Tesla Tesla T 425W B has 20.4% 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 425W B 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.