Aptos Solar DNA-120-MF26 370W vs Meyer Burger Glass 390W
The Meyer Burger Glass 390W wins this comparison by a decisive margin. It leads in efficiency (21.2% vs 20.28%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Meyer Burger Glass 390W is the stronger choice.
Key Differences
- • Aptos Solar DNA-120-MF26 370W is rated at 370W while Meyer Burger Glass 390W is rated at 390W, a 20W difference.
- • Meyer Burger Glass 390W achieves 21.2% efficiency vs 20.28% for the other, a 0.9 percentage point gap.
- • Both carry matching 25-year product warranties.
- • Meyer Burger Glass 390W has a superior temperature coefficient of -0.26%/°C vs -0.36%/°C, retaining more power in hot climates.
- • Aptos Solar DNA-120-MF26 370W uses PERC Mono cells while Meyer Burger Glass 390W uses HJT (Heterojunction) N-type cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Meyer Burger Glass 390W achieves 21.2% module efficiency compared to Aptos Solar DNA-120-MF26 370W's 20.28%, meaning Meyer Burger Glass 390W converts 0.9 percentage points more sunlight into electricity per square meter. In practical terms, the Aptos Solar DNA-120-MF26 370W produces 200.4 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 Glass 390W delivers 390W per panel versus 370W for the Aptos Solar DNA-120-MF26 370W, a 20W difference per module. To build an 8 kW residential system, you would need 22 Aptos Solar DNA-120-MF26 370W 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
The Meyer Burger Glass 390W has a temperature coefficient of -0.26%/°C versus -0.36%/°C for the Aptos Solar DNA-120-MF26 370W. 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 92.8%. This difference is particularly significant in hot climates such as the American Southwest, the Middle East, and Southeast Asia, where panels routinely operate 30-40°C above STC for several hours each day. Over the system lifetime, the cumulative energy advantage from a better temperature coefficient can amount to 2-4% of total production.
Warranty Coverage
The Aptos Solar DNA-120-MF26 370W 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 0.54%/year for Aptos Solar DNA-120-MF26 370W; 1% first year then 0.25%/year for Meyer Burger Glass 390W), after 25 years the Aptos Solar DNA-120-MF26 370W should retain approximately 86.0% of original output versus 93.0% for the Meyer Burger Glass 390W. This 7.0 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The Aptos Solar DNA-120-MF26 370W measures 1762×1048×35mm and weighs 20.5 kg, while the Meyer Burger Glass 390W measures 1722×1134×35mm at 22.5 kg. 1.85 m² of panel area for the Aptos Solar DNA-120-MF26 370W versus 1.95 m² for the Meyer Burger Glass 390W. The Aptos Solar DNA-120-MF26 370W is 2.0 kg lighter per panel, which reduces structural load requirements on the roof and makes handling easier during installation. For a 20-panel system, that is a total weight difference of 40 kg. The more compact Aptos Solar DNA-120-MF26 370W may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | Aptos Solar DNA-120-MF26 370W | Meyer Burger Glass 390W |
|---|---|---|
| Power | 370W | 390W |
| Efficiency | 20.28% | 21.2% |
| Power Density | 18.6 W/sq ft | 18.6 W/sq ft |
| Cell Type | PERC Mono | HJT (Heterojunction) N-type |
| Bifacial | No | No |
| Weight | 20.5 kg | 22.5 kg |
| Temp Coefficient | -0.36%/°C | -0.26%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 4000 Pa | 2400 Pa |
| Product Warranty | 25 years | 25 years |
| Performance Warranty | 30 years | 30 years |
| Degradation (Year 1) | 1% | 1% |
| Annual Degradation | 0.54% | 0.25% |
| Country | Vietnam | Germany |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Meyer Burger Glass 390WThe Meyer Burger Glass 390W achieves 21.2% efficiency versus 20.28% — a 0.9 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 Glass 390WThe Meyer Burger Glass 390W has a better temperature coefficient of -0.26%/°C versus -0.36%/°C. On a 45°C summer day (20°C above STC), the winner retains 94.8% of rated power versus 92.8%. This is a meaningful difference in hot states like Arizona, Texas, and Florida.
3. Durability & Warranty
Winner: Meyer Burger Glass 390WMeyer Burger Glass 390W degrades more slowly at 0.25% per year versus 0.54%. After 25 years, expect 86.0% vs 93.0% of original output for Aptos Solar DNA-120-MF26 370W and Meyer Burger Glass 390W respectively.
4. Power Output
Winner: Meyer Burger Glass 390WThe Meyer Burger Glass 390W delivers 390W versus 370W per panel — 20W more. For an 8 kW system, you need 21 panels with the higher-wattage option versus 22 panels, saving 1 panels and the associated racking and labor costs.
5. Cell Technology
Winner: Meyer Burger Glass 390WThe Aptos Solar DNA-120-MF26 370W uses PERC Mono: PERC (Passivated Emitter Rear Cell) is the current mainstream technology, offering good efficiency at the lowest manufacturing cost. The 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. HJT (Heterojunction) N-type represents a newer generation technology with a longer performance runway as manufacturing matures.
Aptos Solar DNA-120-MF26 370W
Aptos Solar DNA-120-MF26 is a 370W all-black residential panel with DNA technology, designed for aesthetic rooftop installations with strong value pricing.
Pros
- + All-black design for aesthetic residential rooftops
- + Lightweight at 20.5 kg
- + Budget-friendly price per watt
- + 30-year performance warranty
Cons
- - Lower 370W output requires more panels
- - 20.28% efficiency below premium tier
- - No bifacial option in this model
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 Aptos Solar DNA-120-MF26 370W If...
- ✓ Budget-conscious homeowners who want an attractive all-black panel with reliable performance and long warranty coverage.
Choose Meyer Burger Glass 390W 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 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
Our Recommendation
The Meyer Burger Glass 390W is the decisive winner in this solar panel comparison, outperforming the Aptos Solar DNA-120-MF26 370W in 5 of 5 dimensions. Unless you have a specific requirement that the Aptos Solar DNA-120-MF26 370W uniquely addresses, the Meyer Burger Glass 390W is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, Aptos Solar DNA-120-MF26 370W or Meyer Burger Glass 390W?
The Meyer Burger Glass 390W wins this comparison by a decisive margin. It leads in efficiency (21.2% vs 20.28%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Meyer Burger Glass 390W is the stronger choice.
Which panel is more efficient, Aptos Solar DNA-120-MF26 370W or Meyer Burger Glass 390W?
The Meyer Burger Glass 390W at 21.2% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.9 percentage points translates to approximately 20W per panel under standard test conditions.
Which has a better warranty, Aptos Solar DNA-120-MF26 370W or Meyer Burger Glass 390W?
The Aptos Solar DNA-120-MF26 370W 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 Aptos Solar DNA-120-MF26 370W has a temperature coefficient of -0.36%/°C and the Meyer Burger Glass 390W is -0.26%/°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 Aptos Solar DNA-120-MF26 370W vs Meyer Burger Glass 390W panels do I need for an 8 kW system?
For an 8 kW system: you need 22 Aptos Solar DNA-120-MF26 370W panels (370W each) or 21 Meyer Burger Glass 390W panels (390W each). The Meyer Burger Glass 390W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026