Meyer Burger White 400W vs Meyer Burger Glass 390W
This is a close comparison between similar models in the same product line.
The Meyer Burger White 400W wins this comparison by a narrow margin. It leads in efficiency (21.7% vs 21.2%) 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 Meyer Burger Glass 390W is rated at 390W, a 10W difference.
- • Meyer Burger White 400W achieves 21.7% efficiency vs 21.2% for the other, a 0.5 percentage point gap.
- • Both carry matching 25-year product warranties.
Specifications Breakdown
Module Efficiency
The Meyer Burger White 400W achieves 21.7% module efficiency compared to Meyer Burger Glass 390W's 21.2%, meaning Meyer Burger White 400W converts 0.5 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 Meyer Burger Glass 390W produces 199.7 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 Meyer Burger White 400W delivers 400W per panel versus 390W for the Meyer Burger Glass 390W, a 10W difference per module. To build an 8 kW residential system, you would need 20 Meyer Burger White 400W panels or 21 Meyer Burger Glass 390W 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
Both panels share an identical temperature coefficient of -0.26%/°C, meaning they lose power at the same rate as cell temperature rises above the 25°C standard test baseline. At 65°C cell temperature, both retain 94.8% of rated power. Neither panel has a thermal performance advantage, which makes this specification a non-factor in the comparison.
Warranty Coverage
The Meyer Burger White 400W is backed by a 25-year product warranty and 30-year performance guarantee, while the Meyer Burger Glass 390W offers 25-year product and 30-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 0.25%/year for Meyer Burger Glass 390W), after 25 years the Meyer Burger White 400W should retain approximately 93.0% of original output versus 93.0% for the Meyer Burger Glass 390W. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The Meyer Burger White 400W measures 1722×1134×35mm and weighs 21 kg, while the Meyer Burger Glass 390W measures 1722×1134×35mm at 22.5 kg. 1.95 m² of panel area for the Meyer Burger White 400W versus 1.95 m² for the Meyer Burger Glass 390W. 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 | Meyer Burger Glass 390W |
|---|---|---|
| Power | 400W | 390W |
| Efficiency | 21.7% | 21.2% |
| Power Density | 19.0 W/sq ft | 18.6 W/sq ft |
| Cell Type | HJT (Heterojunction) N-type | HJT (Heterojunction) N-type |
| Bifacial | No | No |
| Weight | 21 kg | 22.5 kg |
| Temp Coefficient | -0.26%/°C | -0.26%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 25 years | 25 years |
| Performance Warranty | 30 years | 30 years |
| Degradation (Year 1) | 1% | 1% |
| Annual Degradation | 0.25% | 0.25% |
| Country | Germany | Germany |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Meyer Burger White 400WThe Meyer Burger White 400W achieves 21.7% efficiency versus 21.2% — a 0.5 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: TieBoth panels share a temperature coefficient of -0.26%/°C — identical heat tolerance.
3. Durability & Warranty
Winner: TieBoth panels offer identical 25-year product warranties and 0.25% annual degradation. Neither has a durability advantage.
4. Power Output
Winner: Meyer Burger White 400WThe Meyer Burger White 400W delivers 400W versus 390W per panel — 10W 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: TieBoth panels use HJT (Heterojunction) N-type cell technology. No technology advantage for either product.
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
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
Choose Meyer Burger White 400W 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
- ✓ Quality-focused homeowners in hot climates who want European-manufactured HJT panels with the best temperature performance and longest warranties available.
Choose Meyer Burger Glass 390W If...
- ✓ 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.
Our Recommendation
Both the Meyer Burger White 400W and Meyer Burger Glass 390W are excellent solar panel options, and the margin between them is narrow. The Meyer Burger White 400W 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, Meyer Burger White 400W or Meyer Burger Glass 390W?
The Meyer Burger White 400W wins this comparison by a narrow margin. It leads in efficiency (21.7% vs 21.2%) 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 Meyer Burger Glass 390W?
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 0.5 percentage points translates to approximately 10W per panel under standard test conditions.
Which has a better warranty, Meyer Burger White 400W or Meyer Burger Glass 390W?
The Meyer Burger White 400W comes with a 25-year product warranty and 30-year performance guarantee. The Meyer Burger Glass 390W offers 25-year product and 30-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 Meyer Burger Glass 390W is -0.26%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many Meyer Burger White 400W vs Meyer Burger Glass 390W 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 21 Meyer Burger Glass 390W panels (390W each). The Meyer Burger White 400W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026