Hyundai Energy — South Korea
HiISS 390-A Black
The Hyundai Energy HiISS 390-A Black is a 390W N-Type TOPCon solar panel with 19.4% efficiency. Backed by a 25-year warranty.
Standard Tier
390W
Wattage
19.4%
Efficiency
N-Type TOPCon
Cell Type
25 years
Warranty
Full Specifications
- Brand
- Hyundai Energy
- Model
- HiISS 390-A Black
- Series
- HiISS
- Wattage
- 390W
- Module Efficiency
- 19.4%
- Cell Type
- N-Type TOPCon
- Dimensions
- 65-67" x 39-40"
- Weight
- 44 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $2.32
- Est. 7kW System Cost
- $16,240
- Est. 10kW System Cost
- $23,200
- Temperature Coefficient
- -0.25%/°C
- Bifacial
- No
- Origin
- South Korea
- FEOC Status
- check
Other Hyundai Energy Panels
| Model | Wattage | Efficiency | Cell | $/W |
|---|---|---|---|---|
| HiISS 455W D | 455W | 21.7% | PERC | $3.01 |
| HiISS Plus 455W D | 455W | 21.7% | PERC | $3.01 |
| Green 455W D | 455W | 21.7% | PERC | $3.01 |
| HiISS 450W C All-Black | 450W | 21.5% | N-Type TOPCon | $2.95 |
| HiISS Plus 450W C All-Black | 450W | 21.5% | N-Type TOPCon | $2.95 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| Panasonic EverVolt 420W A Ultra | 420W | 22.3% | $4.08 |
| Panasonic EverVolt 420W D Plus | 420W | 22.3% | $4.08 |
| Panasonic EverVolt VK 420W A Ultra | 420W | 22.3% | $4.08 |
| Panasonic EverVolt VK 420W D Plus | 420W | 22.3% | $4.08 |
Frequently Asked Questions
How much does a 390W Hyundai Energy HiISS 390-A Black cost?
The Hyundai Energy HiISS 390-A Black costs approximately $905 per panel ($$2.32/W). A typical 7kW system using this panel would cost around $16,240 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 Hyundai Energy HiISS 390-A Black a good solar panel?
The Hyundai Energy HiISS 390-A Black has 19.4% 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 Hyundai Energy HiISS 390-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 26 panels. The exact number depends on your roof space, energy usage, and local sun hours.