Solar4America — US
S4A Pro-39 HD
The Solar4America S4A Pro-39 HD is a 395W N-Type TOPCon solar panel with 19.8% efficiency. Made in US. Backed by a 25-year warranty.
Standard Tier
🇺🇸 Domestic Content Bonus Eligible
395W
Wattage
19.8%
Efficiency
N-Type TOPCon
Cell Type
25 years
Warranty
Full Specifications
- Brand
- Solar4America
- Model
- S4A Pro-39 HD
- Series
- S4A Pro
- Wattage
- 395W
- Module Efficiency
- 19.8%
- Cell Type
- N-Type TOPCon
- Dimensions
- 65-67" x 39-40"
- Weight
- 44 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $2.50
- Est. 7kW System Cost
- $17,500
- Est. 10kW System Cost
- $25,000
- Temperature Coefficient
- -0.25%/°C
- Bifacial
- No
- Origin
- US
- FEOC Status
- pass
Other Solar4America Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| S4A 450W D | 450W | 21.7% | PERC | $2.97 |
| S4A Pro 450W D | 450W | 21.7% | PERC | $2.97 |
| S4A Max 450W D | 450W | 21.7% | PERC | $2.97 |
| S4A 445W C All-Black | 445W | 21.5% | N-Type TOPCon | $2.92 |
| S4A Pro 445W C All-Black | 445W | 21.5% | N-Type TOPCon | $2.92 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| Panasonic EverVolt 425W E Pro | 425W | 22.5% | $4.18 |
| Panasonic EverVolt VK 425W E Pro | 425W | 22.5% | $4.18 |
| Panasonic HIT 425W E Pro | 425W | 22.5% | $4.18 |
| Panasonic HIT Plus 425W E Pro | 425W | 22.5% | $4.18 |
Frequently Asked Questions
How much does a 395W Solar4America S4A Pro-39 HD cost?
The Solar4America S4A Pro-39 HD costs approximately $988 per panel ($$2.50/W). A typical 7kW system using this panel would cost around $17,500 before incentives. After the 30% federal tax credit, your net cost drops to $12,250.
Is the Solar4America S4A Pro-39 HD a good solar panel?
The Solar4America S4A Pro-39 HD has 19.8% 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 Solar4America S4A Pro-39 HD panels do I need?
For a typical 7kW residential system, you'd need approximately 18 panels. For a 10kW system, plan for about 26 panels. The exact number depends on your roof space, energy usage, and local sun hours.