Amerisolar — China/US
AS 420W B All-Black
The Amerisolar AS 420W B All-Black is a 420W PERC solar panel with 20.2% efficiency. Backed by a 17-year warranty.
Standard TierFEOC: RestrictedBifacial
420W
Wattage
20.2%
Efficiency
PERC
Cell Type
17 years
Warranty
Full Specifications
- Brand
- Amerisolar
- Model
- AS 420W B All-Black
- Series
- AS
- Wattage
- 420W
- Module Efficiency
- 20.2%
- Cell Type
- PERC
- Dimensions
- 66-80" x 39-41"
- Weight
- 48 lbs
- Warranty
- 17 years
- Est. Price Per Watt
- $2.31
- Est. 7kW System Cost
- $16,170
- Est. 10kW System Cost
- $23,100
- Temperature Coefficient
- -0.35%/°C
- Bifacial
- Yes
- Origin
- China/US
- FEOC Status
- fail
Other Amerisolar Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| AS 450W D | 450W | 21.2% | PERC | $2.61 |
| AS 445W C All-Black | 445W | 21% | N-Type TOPCon | $2.55 |
| AS 440W E Pro | 440W | 20.8% | N-Type TOPCon | $2.49 |
| AS 435W B BF | 435W | 20.7% | PERC | $2.46 |
| AS 430W A HC | 430W | 20.5% | N-Type TOPCon | $2.40 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| Maxeon 3 450W D Plus | 450W | 23.3% | $4.61 |
| SunPower Maxeon 445W D Plus | 445W | 23.1% | $4.58 |
| Maxeon 3 445W A Ultra | 445W | 23.1% | $4.51 |
| SunPower Maxeon 440W C | 440W | 22.9% | $4.50 |
Frequently Asked Questions
How much does a 420W Amerisolar AS 420W B All-Black cost?
The Amerisolar AS 420W B All-Black costs approximately $970 per panel ($$2.31/W). A typical 7kW system using this panel would cost around $16,170 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 Amerisolar AS 420W B All-Black a good solar panel?
The Amerisolar AS 420W B All-Black has 20.2% efficiency and a 17 years warranty, placing it in the standard tier. This is a solid mid-range panel suitable for most residential installations.
How many Amerisolar AS 420W B All-Black 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.