JA Solar — China
JAM 405-A Black
The JA Solar JAM 405-A Black is a 405W PERC solar panel with 19.6% efficiency. Backed by a 25-year warranty.
Standard TierFEOC: Restricted
405W
Wattage
19.6%
Efficiency
PERC
Cell Type
25 years
Warranty
Full Specifications
- Brand
- JA Solar
- Model
- JAM 405-A Black
- Series
- JAM
- Wattage
- 405W
- Module Efficiency
- 19.6%
- Cell Type
- PERC
- Dimensions
- 66-80" x 39-41"
- Weight
- 46 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $1.94
- Est. 7kW System Cost
- $13,580
- Est. 10kW System Cost
- $19,400
- Temperature Coefficient
- -0.35%/°C
- Bifacial
- No
- Origin
- China
- FEOC Status
- fail
Other JA Solar Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| JAM 485W D | 485W | 22.8% | N-Type TOPCon | $2.69 |
| JAM 480W C All-Black | 480W | 22.6% | PERC | $2.64 |
| JAM 470W B BF | 470W | 22.2% | N-Type TOPCon | $2.55 |
| JAM 470W E Pro | 470W | 22.2% | PERC | $2.55 |
| JAM 465W A HC | 465W | 22% | PERC | $2.50 |
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 JA Solar JAM 405-A Black cost?
The JA Solar JAM 405-A Black costs approximately $786 per panel ($$1.94/W). A typical 7kW system using this panel would cost around $13,580 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 JA Solar JAM 405-A Black a good solar panel?
The JA Solar JAM 405-A Black has 19.6% efficiency and a 25 years warranty, placing it in the standard tier. This is a solid mid-range panel suitable for most residential installations.
How many JA Solar JAM 405-A Black 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.