Panasonic EVPV400H vs Aptos Solar DNA-120-MF10 460W
The Panasonic EVPV400H wins this comparison by a narrow margin. It offers better long-term durability with 25-year warranty. For most residential installations, the Panasonic EVPV400H is the stronger choice.
Key Differences
- • Panasonic EVPV400H is rated at 400W while Aptos Solar DNA-120-MF10 460W is rated at 460W, a 60W difference.
- • Aptos Solar DNA-120-MF10 460W achieves 21.26% efficiency vs 21.2% for the other, a 0.1 percentage point gap.
- • Aptos Solar DNA-120-MF10 460W comes with a 30-year product warranty vs 25 years for the other.
- • Panasonic EVPV400H has a superior temperature coefficient of -0.26%/°C vs -0.35%/°C, retaining more power in hot climates.
- • Panasonic EVPV400H uses HJT (Heterojunction) cells while Aptos Solar DNA-120-MF10 460W uses PERC Mono cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Aptos Solar DNA-120-MF10 460W achieves 21.26% module efficiency compared to Panasonic EVPV400H's 21.2%, meaning Aptos Solar DNA-120-MF10 460W converts 0.1 percentage points more sunlight into electricity per square meter. In practical terms, the Panasonic EVPV400H produces 204.8 watts per square meter of panel area while the Aptos Solar DNA-120-MF10 460W produces 212.6 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 Aptos Solar DNA-120-MF10 460W delivers 460W per panel versus 400W for the Panasonic EVPV400H, a 60W difference per module. To build an 8 kW residential system, you would need 20 Panasonic EVPV400H panels or 18 Aptos Solar DNA-120-MF10 460W panels. Choosing the higher-wattage option saves 2 panels, 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 Panasonic EVPV400H has a temperature coefficient of -0.26%/°C versus -0.35%/°C for the Aptos Solar DNA-120-MF10 460W. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the Panasonic EVPV400H retains 94.8% of its rated power while the other retains 93.0%. 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 Panasonic EVPV400H is backed by a 25-year product warranty and 25-year performance guarantee, while the Aptos Solar DNA-120-MF10 460W offers 30-year product and 30-year performance coverage. The Aptos Solar DNA-120-MF10 460W provides 5 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (0.5% first year then 0.35%/year for Panasonic EVPV400H; 1% first year then 0.54%/year for Aptos Solar DNA-120-MF10 460W), after 25 years the Panasonic EVPV400H should retain approximately 91.1% of original output versus 86.0% for the Aptos Solar DNA-120-MF10 460W. This 5.1 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The Panasonic EVPV400H measures 1722×1134×30mm and weighs 21 kg, while the Aptos Solar DNA-120-MF10 460W measures 1908×1134×35mm at 24 kg. 1.95 m² of panel area for the Panasonic EVPV400H versus 2.16 m² for the Aptos Solar DNA-120-MF10 460W. The Panasonic EVPV400H is 3.0 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 60 kg. The more compact Panasonic EVPV400H may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | Panasonic EVPV400H | Aptos Solar DNA-120-MF10 460W |
|---|---|---|
| Power | 400W | 460W |
| Efficiency | 21.2% | 21.26% |
| Power Density | 19.0 W/sq ft | 19.8 W/sq ft |
| Cell Type | HJT (Heterojunction) | PERC Mono |
| Bifacial | Yes | No |
| Weight | 21 kg | 24 kg |
| Temp Coefficient | -0.26%/°C | -0.35%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 4000 Pa |
| Product Warranty | 25 years | 30 years |
| Performance Warranty | 25 years | 30 years |
| Degradation (Year 1) | 0.5% | 1% |
| Annual Degradation | 0.35% | 0.54% |
| Country | Japan | Vietnam |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Aptos Solar DNA-120-MF10 460WThe Aptos Solar DNA-120-MF10 460W achieves 21.26% efficiency versus 21.2% — a 0.1 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 1.8 kW more total system capacity, or 9 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Panasonic EVPV400HThe Panasonic EVPV400H has a better temperature coefficient of -0.26%/°C versus -0.35%/°C. On a 45°C summer day (20°C above STC), the winner retains 94.8% of rated power versus 93.0%. This is a meaningful difference in hot states like Arizona, Texas, and Florida.
3. Durability & Warranty
Winner: Aptos Solar DNA-120-MF10 460WAptos Solar DNA-120-MF10 460W leads with a 30-year product warranty versus 25 years. Panasonic EVPV400H degrades more slowly at 0.35% per year versus 0.54%. After 25 years, expect 91.1% vs 86.0% of original output for Panasonic EVPV400H and Aptos Solar DNA-120-MF10 460W respectively.
4. Power Output
Winner: Aptos Solar DNA-120-MF10 460WThe Aptos Solar DNA-120-MF10 460W delivers 460W versus 400W per panel — 60W more. For an 8 kW system, you need 18 panels with the higher-wattage option versus 20 panels, saving 2 panels and the associated racking and labor costs.
5. Cell Technology
Winner: Panasonic EVPV400HThe Panasonic EVPV400H uses HJT (Heterojunction): HJT (Heterojunction) combines crystalline silicon with amorphous silicon layers, delivering the best temperature coefficient and bifacial gains, but at higher manufacturing cost. The Aptos Solar DNA-120-MF10 460W uses PERC Mono: PERC (Passivated Emitter Rear Cell) is the current mainstream technology, offering good efficiency at the lowest manufacturing cost. HJT (Heterojunction) represents a newer generation technology with a longer performance runway as manufacturing matures.
Panasonic EVPV400H
DISCONTINUED: Panasonic exited solar manufacturing in 2023. The EVPV400H was Panasonic's standard HJT residential panel, delivering 400W with the brand's signature quality and longevity.
Pros
- + Panasonic reliability
- + HJT advantages
- + Solid 25-year warranty
- + Good all-round performer
Cons
- - DISCONTINUED - no longer manufactured
- - No new units available
- - No ongoing product support
Aptos Solar DNA-120-MF10 460W
Aptos Solar DNA-120-MF10 delivers 460W with 120 half-cut PERC cells and 10 ultra-thin busbars for high energy harvest in commercial and large residential systems.
Pros
- + 460W output in a versatile 120-cell format
- + 30-year product and performance warranty
- + 10 ultra-thin busbars reduce resistive loss
- + Competitive price per watt
Cons
- - Larger format may not fit all residential rooftops
- - PERC technology vs newer TOPCon options
- - No bifacial energy gain
Choose Panasonic EVPV400H 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
- ✓ No longer available for new installations.
Choose Aptos Solar DNA-120-MF10 460W 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
- ✓ Long-term warranty protection is a top priority and you plan to stay in your home for 30+ years
- ✓ Commercial installations and large residential systems seeking high wattage with proven PERC technology at competitive pricing.
Our Recommendation
Both the Panasonic EVPV400H and Aptos Solar DNA-120-MF10 460W are excellent solar panel options, and the margin between them is narrow. The Panasonic EVPV400H 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, Panasonic EVPV400H or Aptos Solar DNA-120-MF10 460W?
The Panasonic EVPV400H wins this comparison by a narrow margin. It offers better long-term durability with 25-year warranty. For most residential installations, the Panasonic EVPV400H is the stronger choice.
Which panel is more efficient, Panasonic EVPV400H or Aptos Solar DNA-120-MF10 460W?
The Aptos Solar DNA-120-MF10 460W at 21.26% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.1 percentage points translates to approximately 60W per panel under standard test conditions.
Which has a better warranty, Panasonic EVPV400H or Aptos Solar DNA-120-MF10 460W?
The Panasonic EVPV400H comes with a 25-year product warranty and 25-year performance guarantee. The Aptos Solar DNA-120-MF10 460W offers 30-year product and 30-year performance warranties. Aptos Solar DNA-120-MF10 460W provides 5 additional years of product coverage.
Which panel performs better in hot weather?
The Panasonic EVPV400H has a temperature coefficient of -0.26%/°C and the Aptos Solar DNA-120-MF10 460W is -0.35%/°C. Panasonic EVPV400H retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many Panasonic EVPV400H vs Aptos Solar DNA-120-MF10 460W panels do I need for an 8 kW system?
For an 8 kW system: you need 20 Panasonic EVPV400H panels (400W each) or 18 Aptos Solar DNA-120-MF10 460W panels (460W each). The Aptos Solar DNA-120-MF10 460W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026