Meyer Burger White 400W vs Hyundai HiE-S420VG
The Meyer Burger White 400W wins this comparison by a clear margin. It leads in efficiency (21.7% vs 21.5%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Meyer Burger White 400W is the stronger choice.
Key Differences
- • Meyer Burger White 400W is rated at 400W while Hyundai HiE-S420VG is rated at 420W, a 20W difference.
- • Meyer Burger White 400W achieves 21.7% efficiency vs 21.5% for the other, a 0.2 percentage point gap.
- • Both carry matching 25-year product warranties.
- • Meyer Burger White 400W has a superior temperature coefficient of -0.26%/°C vs -0.3%/°C, retaining more power in hot climates.
- • Meyer Burger White 400W uses HJT (Heterojunction) N-type cells while Hyundai HiE-S420VG uses TOPCon N-type cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Meyer Burger White 400W achieves 21.7% module efficiency compared to Hyundai HiE-S420VG's 21.5%, meaning Meyer Burger White 400W converts 0.2 percentage points more sunlight into electricity per square meter. In practical terms, the Meyer Burger White 400W produces 204.8 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 400W for the Meyer Burger White 400W, a 20W difference per module. To build an 8 kW residential system, you would need 20 Meyer Burger White 400W 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 Meyer Burger White 400W has a temperature coefficient of -0.26%/°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 Meyer Burger White 400W retains 94.8% 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 Meyer Burger White 400W is backed by a 25-year product warranty and 30-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 0.25%/year for Meyer Burger White 400W; 1% first year then 0.4%/year for Hyundai HiE-S420VG), after 25 years the Meyer Burger White 400W should retain approximately 93.0% of original output versus 89.4% for the Hyundai HiE-S420VG. This 3.6 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The Meyer Burger White 400W measures 1722×1134×35mm and weighs 21 kg, while the Hyundai HiE-S420VG measures 1722×1134×30mm at 21 kg. 1.95 m² of panel area for the Meyer Burger White 400W 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 | Meyer Burger White 400W | Hyundai HiE-S420VG |
|---|---|---|
| Power | 400W | 420W |
| Efficiency | 21.7% | 21.5% |
| Power Density | 19.0 W/sq ft | 20.0 W/sq ft |
| Cell Type | HJT (Heterojunction) N-type | TOPCon N-type |
| Bifacial | No | No |
| Weight | 21 kg | 21 kg |
| Temp Coefficient | -0.26%/°C | -0.3%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 25 years | 25 years |
| Performance Warranty | 30 years | 25 years |
| Degradation (Year 1) | 1% | 1% |
| Annual Degradation | 0.25% | 0.4% |
| Country | Germany | South Korea |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Meyer Burger White 400WThe Meyer Burger White 400W achieves 21.7% efficiency versus 21.5% — a 0.2 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 0.6 kW more total system capacity, or 3 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Meyer Burger White 400WThe Meyer Burger White 400W has a better temperature coefficient of -0.26%/°C versus -0.3%/°C. On a 45°C summer day (20°C above STC), the winner retains 94.8% of rated power versus 94.0%. The difference is modest but accumulates over 25 years of summer production.
3. Durability & Warranty
Winner: Meyer Burger White 400WMeyer Burger White 400W degrades more slowly at 0.25% per year versus 0.4%. After 25 years, expect 93.0% vs 89.4% of original output for Meyer Burger White 400W and Hyundai HiE-S420VG respectively.
4. Power Output
Winner: Hyundai HiE-S420VGThe Hyundai HiE-S420VG delivers 420W versus 400W per panel — 20W 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: Meyer Burger White 400WThe Meyer Burger White 400W uses HJT (Heterojunction) N-type: HJT (Heterojunction) combines crystalline silicon with amorphous silicon layers, delivering the best temperature coefficient and bifacial gains, but at higher manufacturing cost. The Hyundai HiE-S420VG uses TOPCon N-type: TOPCon (Tunnel Oxide Passivated Contact) adds a thin tunnel oxide layer to reduce recombination losses, achieving higher efficiency than PERC while being manufacturable on existing production lines. HJT (Heterojunction) N-type represents a newer generation technology with a longer performance runway as manufacturing matures.
Meyer Burger White 400W
The Meyer Burger White 400W is a premium heterojunction (HJT) panel manufactured in Germany, featuring an industry-leading -0.26%/°C temperature coefficient that delivers superior energy yield in hot climates. The HJT cell architecture provides excellent low-light performance and bifacial-ready construction. Meyer Burger's 25-year product warranty and 30-year performance guarantee (92% at year 30) reflect confidence in their proprietary SmartWire Connection Technology (SWCT). A premium European-manufactured alternative to Asian-produced panels.
Pros
- + Industry-leading -0.26%/°C temperature coefficient — best-in-class hot climate performance
- + Made in Germany with European quality standards
- + 25-year product warranty — among the longest in the industry
- + 30-year performance warranty with only 0.25% annual degradation
- + HJT technology delivers excellent low-light and cloudy day performance
- + Bifacial-ready construction for additional energy gain
Cons
- - Premium pricing — $0.50-$0.60/W vs $0.25-$0.35/W for mainstream panels
- - 400W output is modest by current standards
- - Limited US distribution and installer familiarity
- - Meyer Burger has faced financial challenges affecting supply stability
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 Meyer Burger White 400W If...
- ✓ Your roof space is limited and you need maximum power per panel
- ✓ You live in a hot climate (Arizona, Texas, Florida) where heat performance matters
- ✓ You want maximum output retention over the system's 25-30 year lifespan
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Quality-focused homeowners in hot climates who want European-manufactured HJT panels with the best temperature performance and longest warranties available.
Choose Hyundai HiE-S420VG If...
- ✓ 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
We recommend the Meyer Burger White 400W for most buyers in this comparison. It wins 4 of 5 key dimensions and offers a clear advantage in the metrics that matter most for a solar panel purchase. The Hyundai HiE-S420VG remains a good product, but the Meyer Burger White 400W delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, Meyer Burger White 400W or Hyundai HiE-S420VG?
The Meyer Burger White 400W wins this comparison by a clear margin. It leads in efficiency (21.7% vs 21.5%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Meyer Burger White 400W is the stronger choice.
Which panel is more efficient, Meyer Burger White 400W or Hyundai HiE-S420VG?
The Meyer Burger White 400W at 21.7% 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 20W per panel under standard test conditions.
Which has a better warranty, Meyer Burger White 400W or Hyundai HiE-S420VG?
The Meyer Burger White 400W comes with a 25-year product warranty and 30-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 Meyer Burger White 400W has a temperature coefficient of -0.26%/°C and the Hyundai HiE-S420VG is -0.3%/°C. Meyer Burger White 400W retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many Meyer Burger White 400W vs Hyundai HiE-S420VG panels do I need for an 8 kW system?
For an 8 kW system: you need 20 Meyer Burger White 400W panels (400W 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