Maxeon Maxeon 6 425W vs Panasonic EverVolt H 410W
The Maxeon Maxeon 6 425W wins this comparison by a decisive margin. It leads in efficiency (22.2% vs 21.6%) and matches or exceeds on warranty (40 vs 25 years). For most residential installations, the Maxeon Maxeon 6 425W is the stronger choice.
Key Differences
- • Maxeon Maxeon 6 425W is rated at 425W while Panasonic EverVolt H 410W is rated at 410W, a 15W difference.
- • Maxeon Maxeon 6 425W achieves 22.2% efficiency vs 21.6% for the other, a 0.6 percentage point gap.
- • Maxeon Maxeon 6 425W comes with a 40-year product warranty vs 25 years for the other.
- • Panasonic EverVolt H 410W has a superior temperature coefficient of -0.26%/°C vs -0.27%/°C, retaining more power in hot climates.
- • Maxeon Maxeon 6 425W uses IBC (Interdigitated Back Contact) cells while Panasonic EverVolt H 410W uses HJT (Heterojunction) cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Maxeon Maxeon 6 425W achieves 22.2% module efficiency compared to Panasonic EverVolt H 410W's 21.6%, meaning Maxeon Maxeon 6 425W converts 0.6 percentage points more sunlight into electricity per square meter. In practical terms, the Maxeon Maxeon 6 425W produces 220.0 watts per square meter of panel area while the Panasonic EverVolt H 410W produces 210.0 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 Maxeon Maxeon 6 425W delivers 425W per panel versus 410W for the Panasonic EverVolt H 410W, a 15W difference per module. To build an 8 kW residential system, you would need 19 Maxeon Maxeon 6 425W panels or 20 Panasonic EverVolt H 410W 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 Panasonic EverVolt H 410W has a temperature coefficient of -0.26%/°C versus -0.27%/°C for the Maxeon Maxeon 6 425W. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the Panasonic EverVolt H 410W retains 94.8% of its rated power while the other retains 94.6%. 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 Maxeon Maxeon 6 425W is backed by a 40-year product warranty and 40-year performance guarantee, while the Panasonic EverVolt H 410W offers 25-year product and 25-year performance coverage. The Maxeon Maxeon 6 425W provides 15 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (0.25% first year then 0.25%/year for Maxeon Maxeon 6 425W; 0.5% first year then 0.35%/year for Panasonic EverVolt H 410W), after 25 years the Maxeon Maxeon 6 425W should retain approximately 93.8% of original output versus 91.1% for the Panasonic EverVolt H 410W. This 2.7 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The Maxeon Maxeon 6 425W measures 1872×1032×30mm and weighs 20.5 kg, while the Panasonic EverVolt H 410W measures 1722×1134×30mm at 21.5 kg. 1.93 m² of panel area for the Maxeon Maxeon 6 425W versus 1.95 m² for the Panasonic EverVolt H 410W. 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 | Maxeon Maxeon 6 425W | Panasonic EverVolt H 410W |
|---|---|---|
| Power | 425W | 410W |
| Efficiency | 22.2% | 21.6% |
| Power Density | 20.4 W/sq ft | 19.5 W/sq ft |
| Cell Type | IBC (Interdigitated Back Contact) | HJT (Heterojunction) |
| Bifacial | Yes | Yes |
| Weight | 20.5 kg | 21.5 kg |
| Temp Coefficient | -0.27%/°C | -0.26%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 3600 Pa | 2400 Pa |
| Product Warranty | 40 years | 25 years |
| Performance Warranty | 40 years | 25 years |
| Degradation (Year 1) | 0.25% | 0.5% |
| Annual Degradation | 0.25% | 0.35% |
| Country | Malaysia | Japan |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Maxeon Maxeon 6 425WThe Maxeon Maxeon 6 425W achieves 22.2% efficiency versus 21.6% — a 0.6 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 0.5 kW more total system capacity, or 3 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Panasonic EverVolt H 410WThe Panasonic EverVolt H 410W has a better temperature coefficient of -0.26%/°C versus -0.27%/°C. On a 45°C summer day (20°C above STC), the winner retains 94.8% of rated power versus 94.6%. The difference is modest but accumulates over 25 years of summer production.
3. Durability & Warranty
Winner: Maxeon Maxeon 6 425WMaxeon Maxeon 6 425W leads with a 40-year product warranty versus 25 years. Maxeon Maxeon 6 425W degrades more slowly at 0.25% per year versus 0.35%. After 25 years, expect 93.8% vs 91.1% of original output for Maxeon Maxeon 6 425W and Panasonic EverVolt H 410W respectively.
4. Power Output
Winner: Maxeon Maxeon 6 425WThe Maxeon Maxeon 6 425W delivers 425W versus 410W per panel — 15W more. For an 8 kW system, you need 19 panels with the higher-wattage option versus 20 panels, saving 1 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieThe Maxeon Maxeon 6 425W uses IBC (Interdigitated Back Contact): IBC (Interdigitated Back Contact) moves all electrical contacts to the rear of the cell, maximizing front-side light capture for the highest possible efficiency. The Panasonic EverVolt H 410W 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. Both are equivalent-generation technologies.
Maxeon Maxeon 6 425W
The Maxeon 6 delivers 425W with 22.2% efficiency and the same industry-leading 40-year warranty as the Maxeon 7 series.
Pros
- + 40-year complete warranty
- + 22.2% IBC efficiency
- + Excellent aesthetics
- + Ultra-low degradation
Cons
- - Very high cost per watt
- - Limited installer network
- - Fewer wattage options
Panasonic EverVolt H 410W
DISCONTINUED: Panasonic exited solar manufacturing in 2023. The EverVolt H delivered 410W HJT performance in a compact residential format backed by Panasonic's 25-year complete warranty.
Pros
- + 25-year product warranty
- + HJT technology
- + Excellent temperature performance
- + Compact design
Cons
- - DISCONTINUED - no longer manufactured
- - No new units available
- - No ongoing product support
Choose Maxeon Maxeon 6 425W 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 40+ years
- ✓ You want maximum output retention over the system's 25-30 year lifespan
- ✓ Homeowners seeking a premium panel with the longest warranty available.
Choose Panasonic EverVolt H 410W If...
- ✓ You live in a hot climate (Arizona, Texas, Florida) where heat performance matters
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ No longer available for new installations.
Our Recommendation
The Maxeon Maxeon 6 425W is the decisive winner in this solar panel comparison, outperforming the Panasonic EverVolt H 410W in 3 of 5 dimensions. Unless you have a specific requirement that the Panasonic EverVolt H 410W uniquely addresses, the Maxeon Maxeon 6 425W is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, Maxeon Maxeon 6 425W or Panasonic EverVolt H 410W?
The Maxeon Maxeon 6 425W wins this comparison by a decisive margin. It leads in efficiency (22.2% vs 21.6%) and matches or exceeds on warranty (40 vs 25 years). For most residential installations, the Maxeon Maxeon 6 425W is the stronger choice.
Which panel is more efficient, Maxeon Maxeon 6 425W or Panasonic EverVolt H 410W?
The Maxeon Maxeon 6 425W at 22.2% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.6 percentage points translates to approximately 15W per panel under standard test conditions.
Which has a better warranty, Maxeon Maxeon 6 425W or Panasonic EverVolt H 410W?
The Maxeon Maxeon 6 425W comes with a 40-year product warranty and 40-year performance guarantee. The Panasonic EverVolt H 410W offers 25-year product and 25-year performance warranties. Maxeon Maxeon 6 425W provides 15 additional years of product coverage.
Which panel performs better in hot weather?
The Maxeon Maxeon 6 425W has a temperature coefficient of -0.27%/°C and the Panasonic EverVolt H 410W is -0.26%/°C. Panasonic EverVolt H 410W retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many Maxeon Maxeon 6 425W vs Panasonic EverVolt H 410W panels do I need for an 8 kW system?
For an 8 kW system: you need 19 Maxeon Maxeon 6 425W panels (425W each) or 20 Panasonic EverVolt H 410W panels (410W each). The Maxeon Maxeon 6 425W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026