Panasonic EVPV400H vs Panasonic EverVolt 410
This is a close comparison between similar models in the same product line.
The Panasonic EverVolt 410 wins this comparison by a narrow margin. It leads in efficiency (21.5% vs 21.2%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Panasonic EverVolt 410 is the stronger choice.
Key Differences
- • Panasonic EVPV400H is rated at 400W while Panasonic EverVolt 410 is rated at 410W, a 10W difference.
- • Panasonic EverVolt 410 achieves 21.5% efficiency vs 21.2% for the other, a 0.3 percentage point gap.
- • Both carry matching 25-year product warranties.
Specifications Breakdown
Module Efficiency
The Panasonic EverVolt 410 achieves 21.5% module efficiency compared to Panasonic EVPV400H's 21.2%, meaning Panasonic EverVolt 410 converts 0.3 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 Panasonic EverVolt 410 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 Panasonic EverVolt 410 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 Panasonic EVPV400H panels or 20 Panasonic EverVolt 410 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
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 Panasonic EVPV400H is backed by a 25-year product warranty and 25-year performance guarantee, while the Panasonic EverVolt 410 offers 25-year product and 25-year performance coverage. Both offer identical product warranty duration. Based on their published degradation rates (0.5% first year then 0.35%/year for Panasonic EVPV400H; 0.5% first year then 0.35%/year for Panasonic EverVolt 410), after 25 years the Panasonic EVPV400H should retain approximately 91.1% of original output versus 91.1% for the Panasonic EverVolt 410. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The Panasonic EVPV400H measures 1722×1134×30mm and weighs 21 kg, while the Panasonic EverVolt 410 measures 1722×1134×30mm at 21.5 kg. 1.95 m² of panel area for the Panasonic EVPV400H versus 1.95 m² for the Panasonic EverVolt 410. 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 | Panasonic EVPV400H | Panasonic EverVolt 410 |
|---|---|---|
| Power | 400W | 410W |
| Efficiency | 21.2% | 21.5% |
| Power Density | 19.0 W/sq ft | 19.5 W/sq ft |
| Cell Type | HJT (Heterojunction) | HJT (Heterojunction) |
| Bifacial | Yes | Yes |
| Weight | 21 kg | 21.5 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 | 25 years | 25 years |
| Degradation (Year 1) | 0.5% | 0.5% |
| Annual Degradation | 0.35% | 0.35% |
| Country | Japan | Japan |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Panasonic EverVolt 410The Panasonic EverVolt 410 achieves 21.5% efficiency versus 21.2% — a 0.3 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 0.35% annual degradation. Neither has a durability advantage.
4. Power Output
Winner: Panasonic EverVolt 410The Panasonic EverVolt 410 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: TieBoth panels use HJT (Heterojunction) cell technology. No technology advantage for either product.
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
Panasonic EverVolt 410
DISCONTINUED: Panasonic exited solar manufacturing in 2023. The EverVolt 410 offered Panasonic's HJT technology at a slightly more accessible price point while maintaining premium quality.
Pros
- + Panasonic brand quality
- + HJT cell technology
- + Good temperature performance
- + 25-year warranty
Cons
- - DISCONTINUED - no longer manufactured
- - No new units available
- - No ongoing product support
Choose Panasonic EVPV400H If...
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ No longer available for new installations.
Choose Panasonic EverVolt 410 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
- ✓ No longer available for new installations.
Our Recommendation
Both the Panasonic EVPV400H and Panasonic EverVolt 410 are excellent solar panel options, and the margin between them is narrow. The Panasonic EverVolt 410 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 Panasonic EverVolt 410?
The Panasonic EverVolt 410 wins this comparison by a narrow margin. It leads in efficiency (21.5% vs 21.2%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Panasonic EverVolt 410 is the stronger choice.
Which panel is more efficient, Panasonic EVPV400H or Panasonic EverVolt 410?
The Panasonic EverVolt 410 at 21.5% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.3 percentage points translates to approximately 10W per panel under standard test conditions.
Which has a better warranty, Panasonic EVPV400H or Panasonic EverVolt 410?
The Panasonic EVPV400H comes with a 25-year product warranty and 25-year performance guarantee. The Panasonic EverVolt 410 offers 25-year product and 25-year performance warranties. Both offer identical warranty terms.
Which panel performs better in hot weather?
The Panasonic EVPV400H has a temperature coefficient of -0.26%/°C and the Panasonic EverVolt 410 is -0.26%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many Panasonic EVPV400H vs Panasonic EverVolt 410 panels do I need for an 8 kW system?
For an 8 kW system: you need 20 Panasonic EVPV400H panels (400W each) or 20 Panasonic EverVolt 410 panels (410W each). The Panasonic EverVolt 410 requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026