Hanwha Q.TRON G11S 410W vs Hyundai HiE-S420VG
The Hyundai HiE-S420VG wins this comparison by a narrow margin. It leads in efficiency (21.5% vs 21.3%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Hyundai HiE-S420VG is the stronger choice.
Key Differences
- • Hanwha Q.TRON G11S 410W is rated at 410W while Hyundai HiE-S420VG is rated at 420W, a 10W difference.
- • Hyundai HiE-S420VG achieves 21.5% efficiency vs 21.3% for the other, a 0.2 percentage point gap.
- • Both carry matching 25-year product warranties.
- • Hanwha Q.TRON G11S 410W has a superior temperature coefficient of -0.29%/°C vs -0.3%/°C, retaining more power in hot climates.
Specifications Breakdown
Module Efficiency
The Hyundai HiE-S420VG achieves 21.5% module efficiency compared to Hanwha Q.TRON G11S 410W's 21.3%, meaning Hyundai HiE-S420VG converts 0.2 percentage points more sunlight into electricity per square meter. In practical terms, the Hanwha Q.TRON G11S 410W produces 210.0 watts per square meter of panel area while the Hyundai HiE-S420VG produces 215.1 W/m². For rooftop installations where space is limited, this efficiency gap determines how many kilowatts you can fit on your available roof area. Over a 25-year system life, even a small efficiency advantage compounds into meaningful additional energy production.
Power Output
The Hyundai HiE-S420VG delivers 420W per panel versus 410W for the Hanwha Q.TRON G11S 410W, a 10W difference per module. To build an 8 kW residential system, you would need 20 Hanwha Q.TRON G11S 410W panels or 20 Hyundai HiE-S420VG panels. Despite the per-panel wattage difference, both require the same number of panels for this system size due to rounding. Higher wattage per panel is particularly valuable for commercial-scale installations where panel count directly impacts balance-of-system costs.
Temperature Coefficient
The Hanwha Q.TRON G11S 410W has a temperature coefficient of -0.29%/°C versus -0.3%/°C for the Hyundai HiE-S420VG. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the Hanwha Q.TRON G11S 410W retains 94.2% of its rated power while the other retains 94.0%. While the numerical gap is modest, it still accumulates over decades of summer production, especially in southern latitudes with prolonged peak heat hours.
Warranty Coverage
The Hanwha Q.TRON G11S 410W is backed by a 25-year product warranty and 25-year performance guarantee, while the Hyundai HiE-S420VG offers 25-year product and 25-year performance coverage. Both offer identical product warranty duration. Based on their published degradation rates (1% first year then 0.4%/year for Hanwha Q.TRON G11S 410W; 1% first year then 0.4%/year for Hyundai HiE-S420VG), after 25 years the Hanwha Q.TRON G11S 410W should retain approximately 89.4% of original output versus 89.4% for the Hyundai HiE-S420VG. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The Hanwha Q.TRON G11S 410W measures 1722×1134×30mm and weighs 20.8 kg, while the Hyundai HiE-S420VG measures 1722×1134×30mm at 21 kg. 1.95 m² of panel area for the Hanwha Q.TRON G11S 410W versus 1.95 m² for the Hyundai HiE-S420VG. Their weights are closely matched, so neither panel imposes a significantly different structural load on the mounting system. Similar footprints mean both panels fit comparably on standard residential rooftop configurations.
Specification Comparison
| Specification | Hanwha Q.TRON G11S 410W | Hyundai HiE-S420VG |
|---|---|---|
| Power | 410W | 420W |
| Efficiency | 21.3% | 21.5% |
| Power Density | 19.5 W/sq ft | 20.0 W/sq ft |
| Cell Type | TOPCon N-type | TOPCon N-type |
| Bifacial | No | No |
| Weight | 20.8 kg | 21 kg |
| Temp Coefficient | -0.29%/°C | -0.3%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 25 years | 25 years |
| Performance Warranty | 25 years | 25 years |
| Degradation (Year 1) | 1% | 1% |
| Annual Degradation | 0.4% | 0.4% |
| Country | South Korea | South Korea |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Hyundai HiE-S420VGThe Hyundai HiE-S420VG achieves 21.5% efficiency versus 21.3% — a 0.2 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 0.3 kW more total system capacity, or 2 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Hanwha Q.TRON G11S 410WThe Hanwha Q.TRON G11S 410W has a better temperature coefficient of -0.29%/°C versus -0.3%/°C. On a 45°C summer day (20°C above STC), the winner retains 94.2% of rated power versus 94.0%. The difference is modest but accumulates over 25 years of summer production.
3. Durability & Warranty
Winner: TieBoth panels offer identical 25-year product warranties and 0.4% annual degradation. Neither has a durability advantage.
4. Power Output
Winner: Hyundai HiE-S420VGThe Hyundai HiE-S420VG delivers 420W versus 410W per panel — 10W more. For an 8 kW system, you need 20 panels with the higher-wattage option versus 20 panels, saving 0 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieBoth panels use TOPCon N-type cell technology. No technology advantage for either product.
Hanwha Q.TRON G11S 410W
The Hanwha Q.TRON G11S delivers 410W N-type TOPCon performance in a compact residential format with a strong 25-year warranty.
Pros
- + 25-year product warranty
- + N-type TOPCon cells
- + Compact size
- + Korean quality
Cons
- - Moderate wattage
- - Premium pricing
- - Limited color options
Hyundai HiE-S420VG
The Hyundai HiE-S420VG is a 420W residential-format TOPCon N-type panel in the popular 108-cell configuration (1722 x 1134mm), matching the most common residential panel size for easy racking and roof fit. Korean manufacturing provides supply chain diversification, and the TOPCon N-type cells deliver better temperature performance (-0.30%/°C) and lower degradation than PERC alternatives. The standard residential form factor ensures compatibility with all major racking systems.
Pros
- + Standard 108-cell residential size — fits any racking system
- + Korean-made TOPCon N-type with 21.5% efficiency
- + -0.30%/°C temperature coefficient for hot climate performance
- + 25+25 year warranty backed by Hyundai corporate
- + Non-Chinese manufacturing for tariff and UFLPA considerations
- + 420W competitive output in standard residential format
Cons
- - 420W is competitive but not class-leading for 108-cell panels
- - Slightly higher per-watt cost than Chinese equivalents
- - Smaller US installer network and distribution
- - Less brand recognition in solar market despite Hyundai name
Choose Hanwha Q.TRON G11S 410W If...
- ✓ You live in a hot climate (Arizona, Texas, Florida) where heat performance matters
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Residential installations valuing Korean quality with strong warranty.
Choose Hyundai HiE-S420VG If...
- ✓ Your roof space is limited and you need maximum power per panel
- ✓ You want fewer panels to reach your target system size, reducing racking and labor costs
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Residential homeowners wanting a standard-size Korean-manufactured TOPCon panel that fits any roof and racking system with strong corporate warranty backing.
Our Recommendation
Both the Hanwha Q.TRON G11S 410W and Hyundai HiE-S420VG are excellent solar panel options, and the margin between them is narrow. The Hyundai HiE-S420VG wins 2 of 5 comparison dimensions by a slim margin. Your decision may come down to local pricing, installer availability, and which specific performance metrics matter most for your project. Either product is a solid investment.
Frequently Asked Questions
Which is better, Hanwha Q.TRON G11S 410W or Hyundai HiE-S420VG?
The Hyundai HiE-S420VG wins this comparison by a narrow margin. It leads in efficiency (21.5% vs 21.3%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Hyundai HiE-S420VG is the stronger choice.
Which panel is more efficient, Hanwha Q.TRON G11S 410W or Hyundai HiE-S420VG?
The Hyundai HiE-S420VG at 21.5% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.2 percentage points translates to approximately 10W per panel under standard test conditions.
Which has a better warranty, Hanwha Q.TRON G11S 410W or Hyundai HiE-S420VG?
The Hanwha Q.TRON G11S 410W comes with a 25-year product warranty and 25-year performance guarantee. The Hyundai HiE-S420VG offers 25-year product and 25-year performance warranties. Both offer identical warranty terms.
Which panel performs better in hot weather?
The Hanwha Q.TRON G11S 410W has a temperature coefficient of -0.29%/°C and the Hyundai HiE-S420VG is -0.3%/°C. Hanwha Q.TRON G11S 410W retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many Hanwha Q.TRON G11S 410W vs Hyundai HiE-S420VG panels do I need for an 8 kW system?
For an 8 kW system: you need 20 Hanwha Q.TRON G11S 410W panels (410W each) or 20 Hyundai HiE-S420VG panels (420W each). The Hyundai HiE-S420VG requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026