Hyundai Energy — South Korea
HiISS 370W Pro
The Hyundai Energy HiISS 370W Pro is a 370W PERC solar panel with 18.6% efficiency. Backed by a 25-year warranty.
Standard Tier
370W
Wattage
18.6%
Efficiency
PERC
Cell Type
25 years
Warranty
Full Specifications
- Brand
- Hyundai Energy
- Model
- HiISS 370W Pro
- Series
- HiISS
- Wattage
- 370W
- Module Efficiency
- 18.6%
- Cell Type
- PERC
- Dimensions
- 65-67" x 39-40"
- Weight
- 42 lbs
- Warranty
- 25 years
- Est. Price Per Watt
- $2.08
- Est. 7kW System Cost
- $14,560
- Est. 10kW System Cost
- $20,800
- Temperature Coefficient
- -0.35%/°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 450W C All-Black | 450W | 21.5% | N-Type TOPCon | $2.95 |
| HiISS 445W E Pro | 445W | 21.4% | N-Type TOPCon | $2.92 |
| HiISS 440W B BF | 440W | 21.2% | PERC | $2.86 |
| HiISS 435W A HC | 435W | 21% | N-Type TOPCon | $2.80 |
Similar Wattage Panels (Competitors)
| Panel | Wattage | Efficiency | $/W |
|---|---|---|---|
| SunPower Maxeon-40 HD | 400W | 21.5% | $3.92 |
| SunPower Maxeon 395W E BF | 395W | 21.4% | $3.87 |
| Maxeon 3 400-A Black | 400W | 21.4% | $3.61 |
| Maxeon 3 395W A | 395W | 21.2% | $3.51 |
Frequently Asked Questions
How much does a 370W Hyundai Energy HiISS 370W Pro cost?
The Hyundai Energy HiISS 370W Pro costs approximately $770 per panel ($$2.08/W). A typical 7kW system using this panel would cost around $14,560 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 Hyundai Energy HiISS 370W Pro a good solar panel?
The Hyundai Energy HiISS 370W Pro has 18.6% 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 370W Pro panels do I need?
For a typical 7kW residential system, you'd need approximately 19 panels. For a 10kW system, plan for about 28 panels. The exact number depends on your roof space, energy usage, and local sun hours.