Kyuara — Japan
KYX 400W D Max
The Kyuara KYX 400W D Max is a 400W HJT solar panel with 20.2% efficiency. Made in Japan. Backed by a 25-year warranty.
Standard Tier
400W
Wattage
20.2%
Efficiency
HJT
Cell Type
25 years
Warranty
Full Specifications
- Brand
- Kyuara
- Model
- KYX 400W D Max
- Series
- KYX
- Wattage
- 400W
- Module Efficiency
- 20.2%
- Cell Type
- HJT
- Dimensions
- 66-80" x 39-41"
- Weight
- 46 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $2.83
- Est. 7kW System Cost
- $19,810
- Est. 10kW System Cost
- $28,300
- Temperature Coefficient
- -0.25%/°C
- Bifacial
- No
- Origin
- Japan
- FEOC Status
- likely_pass
Other Kyuara Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| KYX 440W D | 440W | 21.8% | HJT | $3.57 |
| KYX 435W C All-Black | 435W | 21.6% | N-Type | $3.48 |
| KYX 430W E Pro | 430W | 21.4% | N-Type | $3.39 |
| KYX 430W B BF | 430W | 21.4% | HJT | $3.39 |
| KYX 425W A Ultra | 425W | 21.2% | HJT | $3.29 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| SunPower Maxeon 430W E Max | 430W | 22.6% | $4.38 |
| SunPower Maxeon 430W B All-Black | 430W | 22.6% | $4.38 |
| SunPower Maxeon 430W C Black | 430W | 22.6% | $4.38 |
| SunPower Performance 430W E Max | 430W | 22.6% | $4.38 |
Frequently Asked Questions
How much does a 400W Kyuara KYX 400W D Max cost?
The Kyuara KYX 400W D Max costs approximately $1132 per panel ($$2.83/W). A typical 7kW system using this panel would cost around $19,810 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 Kyuara KYX 400W D Max a good solar panel?
The Kyuara KYX 400W D Max has 20.2% 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 Kyuara KYX 400W 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.