Meyer Burger Glass 390W vs Hyundai HiE-S420VG
The Meyer Burger Glass 390W wins this comparison by a clear margin. It offers better long-term durability with 25-year warranty. For most residential installations, the Meyer Burger Glass 390W is the stronger choice.
Key Differences
- • Meyer Burger Glass 390W is rated at 390W while Hyundai HiE-S420VG is rated at 420W, a 30W difference.
- • Hyundai HiE-S420VG achieves 21.5% efficiency vs 21.2% for the other, a 0.3 percentage point gap.
- • Both carry matching 25-year product warranties.
- • Meyer Burger Glass 390W has a superior temperature coefficient of -0.26%/°C vs -0.3%/°C, retaining more power in hot climates.
- • Meyer Burger Glass 390W uses HJT (Heterojunction) N-type cells while Hyundai HiE-S420VG uses TOPCon N-type cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Hyundai HiE-S420VG achieves 21.5% module efficiency compared to Meyer Burger Glass 390W's 21.2%, meaning Hyundai HiE-S420VG converts 0.3 percentage points more sunlight into electricity per square meter. In practical terms, the Meyer Burger Glass 390W produces 199.7 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 390W for the Meyer Burger Glass 390W, a 30W difference per module. To build an 8 kW residential system, you would need 21 Meyer Burger Glass 390W panels or 20 Hyundai HiE-S420VG panels. Choosing the higher-wattage option saves 1 panel, reducing total racking hardware, wiring, and installation labor costs. 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 Glass 390W 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 Glass 390W 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 Glass 390W 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 Glass 390W; 1% first year then 0.4%/year for Hyundai HiE-S420VG), after 25 years the Meyer Burger Glass 390W 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 Glass 390W measures 1722×1134×35mm and weighs 22.5 kg, while the Hyundai HiE-S420VG measures 1722×1134×30mm at 21 kg. 1.95 m² of panel area for the Meyer Burger Glass 390W 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 Glass 390W | Hyundai HiE-S420VG |
|---|---|---|
| Power | 390W | 420W |
| Efficiency | 21.2% | 21.5% |
| Power Density | 18.6 W/sq ft | 20.0 W/sq ft |
| Cell Type | HJT (Heterojunction) N-type | TOPCon N-type |
| Bifacial | No | No |
| Weight | 22.5 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: Hyundai HiE-S420VGThe Hyundai HiE-S420VG achieves 21.5% efficiency versus 21.2% — a 0.3 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 0.9 kW more total system capacity, or 5 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Meyer Burger Glass 390WThe Meyer Burger Glass 390W 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 Glass 390WMeyer Burger Glass 390W 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 Glass 390W and Hyundai HiE-S420VG respectively.
4. Power Output
Winner: Hyundai HiE-S420VGThe Hyundai HiE-S420VG delivers 420W versus 390W per panel — 30W more. For an 8 kW system, you need 20 panels with the higher-wattage option versus 21 panels, saving 1 panels and the associated racking and labor costs.
5. Cell Technology
Winner: Meyer Burger Glass 390WThe Meyer Burger Glass 390W 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 Glass 390W
The Meyer Burger Glass 390W is the all-black aesthetic variant of Meyer Burger's premium HJT panel line, featuring a glass-glass construction for enhanced durability and fire resistance. The all-black appearance (black frame, black backsheet) makes it ideal for residential installations where aesthetics matter. It shares the same industry-leading -0.26%/°C temperature coefficient and SmartWire Connection Technology as the White series, with the glass-glass build adding mechanical strength and improved PID resistance.
Pros
- + Sleek all-black aesthetics for residential curb appeal
- + Glass-glass construction for enhanced durability and fire resistance
- + -0.26%/°C temperature coefficient — same industry-leading thermal performance
- + Made in Germany with 25+30 year warranty coverage
- + Improved PID resistance from glass-glass construction
- + HJT cells deliver excellent low-light performance
Cons
- - 390W slightly lower output than White variant due to all-black design
- - Glass-glass construction adds 1.5 kg weight per panel
- - Higher price premium for aesthetic all-black finish
- - Limited US availability and installer network
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 Glass 390W If...
- ✓ 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
- ✓ Aesthetic-conscious homeowners who want premium European-made HJT panels with an all-black look and glass-glass durability for visible roof installations.
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
We recommend the Meyer Burger Glass 390W for most buyers in this comparison. It wins 3 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 Glass 390W delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, Meyer Burger Glass 390W or Hyundai HiE-S420VG?
The Meyer Burger Glass 390W wins this comparison by a clear margin. It offers better long-term durability with 25-year warranty. For most residential installations, the Meyer Burger Glass 390W is the stronger choice.
Which panel is more efficient, Meyer Burger Glass 390W 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 0.3 percentage points translates to approximately 30W per panel under standard test conditions.
Which has a better warranty, Meyer Burger Glass 390W or Hyundai HiE-S420VG?
The Meyer Burger Glass 390W 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 Glass 390W has a temperature coefficient of -0.26%/°C and the Hyundai HiE-S420VG is -0.3%/°C. Meyer Burger Glass 390W 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 Glass 390W vs Hyundai HiE-S420VG panels do I need for an 8 kW system?
For an 8 kW system: you need 21 Meyer Burger Glass 390W panels (390W each) or 20 Hyundai HiE-S420VG panels (420W each). The Hyundai HiE-S420VG requires fewer panels, saving on racking hardware and installation labor.
Related Resources
Last updated: February 2026