Auxin Solar — US
AXN 400W A Ultra
The Auxin Solar AXN 400W A Ultra is a 400W PERC solar panel with 20.0% efficiency. Made in US. Backed by a 25-year warranty.
Standard Tier🇺🇸 Domestic Content Bonus Eligible
400W
Wattage
20%
Efficiency
PERC
Cell Type
25 years
Warranty
Full Specifications
- Brand
- Auxin Solar
- Model
- AXN 400W A Ultra
- Series
- AXN
- Wattage
- 400W
- Module Efficiency
- 20%
- Cell Type
- PERC
- Dimensions
- 66-80" x 39-41"
- Weight
- 46 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $2.90
- Est. 7kW System Cost
- $20,300
- Est. 10kW System Cost
- $29,000
- Temperature Coefficient
- -0.35%/°C
- Bifacial
- No
- Origin
- US
- FEOC Status
- pass
Other Auxin Solar Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| AXN 420W D | 420W | 20.6% | PERC | $3.10 |
| AXN 415W C All-Black | 415W | 20.4% | PERC | $3.03 |
| AXN 410W B BF | 410W | 20.3% | PERC | $3.00 |
| AXN 405W D Plus | 405W | 20.1% | PERC | $2.93 |
| AXN 400W C | 400W | 20% | PERC | $2.90 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| SunPower Maxeon 430W E Max | 430W | 22.6% | $4.38 |
| SunPower Maxeon 430W C Black | 430W | 22.6% | $4.38 |
| Panasonic HIT 425W E Pro | 425W | 22.5% | $4.18 |
| Maxeon 3 430W E HC | 430W | 22.5% | $4.19 |
Frequently Asked Questions
How much does a 400W Auxin Solar AXN 400W A Ultra cost?
The Auxin Solar AXN 400W A Ultra costs approximately $1160 per panel ($$2.90/W). A typical 7kW system using this panel would cost around $20,300 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 Auxin Solar AXN 400W A Ultra a good solar panel?
The Auxin Solar AXN 400W A Ultra has 20% efficiency and a 25 years warranty, placing it in the standard 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 Auxin Solar AXN 400W A Ultra 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.