Maxeon Maxeon 3 410W vs Panasonic EVPV400H
The Maxeon Maxeon 3 410W wins this comparison by a clear margin. It leads in efficiency (22.2% vs 21.2%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Maxeon Maxeon 3 410W is the stronger choice.
Key Differences
- • Maxeon Maxeon 3 410W is rated at 410W while Panasonic EVPV400H is rated at 400W, a 10W difference.
- • Maxeon Maxeon 3 410W achieves 22.2% efficiency vs 21.2% for the other, a 1.0 percentage point gap.
- • Both carry matching 25-year product warranties.
- • Panasonic EVPV400H has a superior temperature coefficient of -0.26%/°C vs -0.27%/°C, retaining more power in hot climates.
- • Maxeon Maxeon 3 410W uses IBC (Interdigitated Back Contact) cells while Panasonic EVPV400H uses HJT (Heterojunction) cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Maxeon Maxeon 3 410W achieves 22.2% module efficiency compared to Panasonic EVPV400H's 21.2%, meaning Maxeon Maxeon 3 410W converts 1.0 percentage points more sunlight into electricity per square meter. In practical terms, the Maxeon Maxeon 3 410W produces 222.7 watts per square meter of panel area while the Panasonic EVPV400H produces 204.8 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 3 410W delivers 410W per panel versus 400W for the Panasonic EVPV400H, a 10W difference per module. To build an 8 kW residential system, you would need 20 Maxeon Maxeon 3 410W panels or 20 Panasonic EVPV400H panels. Despite the per-panel wattage difference, both require the same number of panels for this system size due to rounding. 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 -0.27%/°C for the Maxeon Maxeon 3 410W. 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 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 3 410W is backed by a 25-year product warranty and 25-year performance guarantee, while the Panasonic EVPV400H offers 25-year product and 25-year performance coverage. Both offer identical product warranty duration. Based on their published degradation rates (0.25% first year then 0.25%/year for Maxeon Maxeon 3 410W; 0.5% first year then 0.35%/year for Panasonic EVPV400H), after 25 years the Maxeon Maxeon 3 410W should retain approximately 93.8% of original output versus 91.1% for the Panasonic EVPV400H. This 2.7 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The Maxeon Maxeon 3 410W measures 1812×1016×30mm and weighs 19 kg, while the Panasonic EVPV400H measures 1722×1134×30mm at 21 kg. 1.84 m² of panel area for the Maxeon Maxeon 3 410W versus 1.95 m² for the Panasonic EVPV400H. The Maxeon Maxeon 3 410W 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 Maxeon Maxeon 3 410W may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | Maxeon Maxeon 3 410W | Panasonic EVPV400H |
|---|---|---|
| Power | 410W | 400W |
| Efficiency | 22.2% | 21.2% |
| Power Density | 20.7 W/sq ft | 19.0 W/sq ft |
| Cell Type | IBC (Interdigitated Back Contact) | HJT (Heterojunction) |
| Bifacial | Yes | Yes |
| Weight | 19 kg | 21 kg |
| Temp Coefficient | -0.27%/°C | -0.26%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 3600 Pa | 2400 Pa |
| Product Warranty | 25 years | 25 years |
| Performance Warranty | 25 years | 25 years |
| Degradation (Year 1) | 0.25% | 0.5% |
| Annual Degradation | 0.25% | 0.35% |
| Country | Mexico | Japan |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Maxeon Maxeon 3 410WThe Maxeon Maxeon 3 410W achieves 22.2% efficiency versus 21.2% — a 1.0 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: Panasonic EVPV400HThe Panasonic EVPV400H 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 3 410WMaxeon Maxeon 3 410W 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 3 410W and Panasonic EVPV400H respectively.
4. Power Output
Winner: Maxeon Maxeon 3 410WThe Maxeon Maxeon 3 410W delivers 410W versus 400W per panel — 10W more. For an 8 kW system, you need 20 panels with the higher-wattage option versus 20 panels, saving 0 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieThe Maxeon Maxeon 3 410W 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 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. Both are equivalent-generation technologies.
Maxeon Maxeon 3 410W
The Maxeon 3 (formerly SunPower) delivers 410W with IBC technology and a proven 25-year warranty track record. Note: this is a discontinued/legacy model being phased out in favor of newer Maxeon series.
Pros
- + Proven IBC technology
- + 25-year comprehensive warranty
- + Excellent real-world performance
- + Lightweight design
Cons
- - Discontinued/legacy model
- - Higher cost than conventional panels
- - Limited future support and availability
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
Choose Maxeon Maxeon 3 410W 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 want maximum output retention over the system's 25-30 year lifespan
- ✓ Those wanting a proven premium panel with established track record (while supplies last).
Choose Panasonic EVPV400H 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
We recommend the Maxeon Maxeon 3 410W 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 Panasonic EVPV400H remains a good product, but the Maxeon Maxeon 3 410W delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, Maxeon Maxeon 3 410W or Panasonic EVPV400H?
The Maxeon Maxeon 3 410W wins this comparison by a clear margin. It leads in efficiency (22.2% vs 21.2%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Maxeon Maxeon 3 410W is the stronger choice.
Which panel is more efficient, Maxeon Maxeon 3 410W or Panasonic EVPV400H?
The Maxeon Maxeon 3 410W 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 1.0 percentage points translates to approximately 10W per panel under standard test conditions.
Which has a better warranty, Maxeon Maxeon 3 410W or Panasonic EVPV400H?
The Maxeon Maxeon 3 410W comes with a 25-year product warranty and 25-year performance guarantee. The Panasonic EVPV400H offers 25-year product and 25-year performance warranties. Both offer identical warranty terms.
Which panel performs better in hot weather?
The Maxeon Maxeon 3 410W has a temperature coefficient of -0.27%/°C and the Panasonic EVPV400H is -0.26%/°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 Maxeon Maxeon 3 410W vs Panasonic EVPV400H panels do I need for an 8 kW system?
For an 8 kW system: you need 20 Maxeon Maxeon 3 410W panels (410W each) or 20 Panasonic EVPV400H panels (400W each). The Maxeon Maxeon 3 410W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026