LONGi Hi-MO 6 Explorer 430W vs Panasonic EverVolt HK 430W
The Panasonic EverVolt HK 430W wins this comparison by a decisive margin. It leads in efficiency (22.2% vs 21.6%) and matches or exceeds on warranty (25 vs 12 years). For most residential installations, the Panasonic EverVolt HK 430W is the stronger choice.
Key Differences
- • Both panels are rated at 430W, so the comparison comes down to efficiency, warranty, and technology.
- • Panasonic EverVolt HK 430W achieves 22.2% efficiency vs 21.6% for the other, a 0.6 percentage point gap.
- • Panasonic EverVolt HK 430W comes with a 25-year product warranty vs 12 years for the other.
- • Panasonic EverVolt HK 430W has a superior temperature coefficient of -0.26%/°C vs -0.34%/°C, retaining more power in hot climates.
- • LONGi Hi-MO 6 Explorer 430W uses PERC Mono cells while Panasonic EverVolt HK 430W uses HJT (Heterojunction) cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Panasonic EverVolt HK 430W achieves 22.2% module efficiency compared to LONGi Hi-MO 6 Explorer 430W's 21.6%, meaning Panasonic EverVolt HK 430W converts 0.6 percentage points more sunlight into electricity per square meter. In practical terms, the LONGi Hi-MO 6 Explorer 430W produces 220.2 watts per square meter of panel area while the Panasonic EverVolt HK 430W produces 220.2 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
Both panels are rated at 430W under standard test conditions (STC), requiring 19 panels each to build an 8 kW system. With identical wattage ratings, the power output dimension is a draw and does not favor either panel. The real differentiators become efficiency density, temperature behavior, and long-term degradation rates which determine actual field performance beyond the nameplate rating.
Temperature Coefficient
The Panasonic EverVolt HK 430W has a temperature coefficient of -0.26%/°C versus -0.34%/°C for the LONGi Hi-MO 6 Explorer 430W. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the Panasonic EverVolt HK 430W retains 94.8% of its rated power while the other retains 93.2%. 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 LONGi Hi-MO 6 Explorer 430W is backed by a 12-year product warranty and 25-year performance guarantee, while the Panasonic EverVolt HK 430W offers 25-year product and 25-year performance coverage. The Panasonic EverVolt HK 430W provides 13 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (1.5% first year then 0.5%/year for LONGi Hi-MO 6 Explorer 430W; 0.5% first year then 0.35%/year for Panasonic EverVolt HK 430W), after 25 years the LONGi Hi-MO 6 Explorer 430W should retain approximately 86.5% of original output versus 91.1% for the Panasonic EverVolt HK 430W. This 4.6 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The LONGi Hi-MO 6 Explorer 430W measures 1722×1134×30mm and weighs 21 kg, while the Panasonic EverVolt HK 430W measures 1722×1134×30mm at 22.5 kg. 1.95 m² of panel area for the LONGi Hi-MO 6 Explorer 430W versus 1.95 m² for the Panasonic EverVolt HK 430W. 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 | LONGi Hi-MO 6 Explorer 430W | Panasonic EverVolt HK 430W |
|---|---|---|
| Power | 430W | 430W |
| Efficiency | 21.6% | 22.2% |
| Power Density | 20.5 W/sq ft | 20.5 W/sq ft |
| Cell Type | PERC Mono | HJT (Heterojunction) |
| Bifacial | No | Yes |
| Weight | 21 kg | 22.5 kg |
| Temp Coefficient | -0.34%/°C | -0.26%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 12 years | 25 years |
| Performance Warranty | 25 years | 25 years |
| Degradation (Year 1) | 1.5% | 0.5% |
| Annual Degradation | 0.5% | 0.35% |
| Country | China | Japan |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Panasonic EverVolt HK 430WThe Panasonic EverVolt HK 430W achieves 22.2% efficiency versus 21.6% — a 0.6 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 0.0 kW more total system capacity, or 0 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Panasonic EverVolt HK 430WThe Panasonic EverVolt HK 430W has a better temperature coefficient of -0.26%/°C versus -0.34%/°C. On a 45°C summer day (20°C above STC), the winner retains 94.8% of rated power versus 93.2%. This is a meaningful difference in hot states like Arizona, Texas, and Florida.
3. Durability & Warranty
Winner: Panasonic EverVolt HK 430WPanasonic EverVolt HK 430W leads with a 25-year product warranty versus 12 years. Panasonic EverVolt HK 430W degrades more slowly at 0.35% per year versus 0.5%. After 25 years, expect 86.5% vs 91.1% of original output for LONGi Hi-MO 6 Explorer 430W and Panasonic EverVolt HK 430W respectively.
4. Power Output
Winner: TieBoth panels deliver 430W — identical power output per panel. System cost per watt will be the deciding factor.
5. Cell Technology
Winner: Panasonic EverVolt HK 430WThe LONGi Hi-MO 6 Explorer 430W uses PERC Mono: PERC (Passivated Emitter Rear Cell) is the current mainstream technology, offering good efficiency at the lowest manufacturing cost. The Panasonic EverVolt HK 430W 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. HJT (Heterojunction) represents a newer generation technology with a longer performance runway as manufacturing matures.
LONGi Hi-MO 6 Explorer 430W
The Hi-MO 6 Explorer is an affordable PERC panel delivering 430W output, designed for cost-effective residential solar installations.
Pros
- + Affordable price point
- + Lightweight design
- + Easy to install
- + Reliable PERC technology
Cons
- - Lower efficiency than N-type models
- - Higher temperature coefficient
- - Shorter warranty
Panasonic EverVolt HK 430W
DISCONTINUED: Panasonic exited solar manufacturing in 2023. The EverVolt HK delivered 430W using HJT technology with Panasonic's renowned build quality and 25-year warranty.
Pros
- + Japanese engineering quality
- + Excellent HJT temperature coefficient
- + 25-year warranty
- + Strong brand trust
Cons
- - DISCONTINUED - no longer manufactured
- - No new units available
- - No ongoing product support
Choose LONGi Hi-MO 6 Explorer 430W If...
- ✓ Budget residential installations where cost is the priority.
Choose Panasonic EverVolt HK 430W If...
- ✓ Your roof space is limited and you need maximum power per panel
- ✓ Long-term warranty protection is a top priority and you plan to stay in your home for 25+ years
- ✓ 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 Panasonic EverVolt HK 430W is the decisive winner in this solar panel comparison, outperforming the LONGi Hi-MO 6 Explorer 430W in 4 of 5 dimensions. Unless you have a specific requirement that the LONGi Hi-MO 6 Explorer 430W uniquely addresses, the Panasonic EverVolt HK 430W is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, LONGi Hi-MO 6 Explorer 430W or Panasonic EverVolt HK 430W?
The Panasonic EverVolt HK 430W wins this comparison by a decisive margin. It leads in efficiency (22.2% vs 21.6%) and matches or exceeds on warranty (25 vs 12 years). For most residential installations, the Panasonic EverVolt HK 430W is the stronger choice.
Which panel is more efficient, LONGi Hi-MO 6 Explorer 430W or Panasonic EverVolt HK 430W?
The Panasonic EverVolt HK 430W 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 0W per panel under standard test conditions.
Which has a better warranty, LONGi Hi-MO 6 Explorer 430W or Panasonic EverVolt HK 430W?
The LONGi Hi-MO 6 Explorer 430W comes with a 12-year product warranty and 25-year performance guarantee. The Panasonic EverVolt HK 430W offers 25-year product and 25-year performance warranties. Panasonic EverVolt HK 430W provides 13 additional years of product coverage.
Which panel performs better in hot weather?
The LONGi Hi-MO 6 Explorer 430W has a temperature coefficient of -0.34%/°C and the Panasonic EverVolt HK 430W is -0.26%/°C. Panasonic EverVolt HK 430W retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many LONGi Hi-MO 6 Explorer 430W vs Panasonic EverVolt HK 430W panels do I need for an 8 kW system?
For an 8 kW system: you need 19 LONGi Hi-MO 6 Explorer 430W panels (430W each) or 19 Panasonic EverVolt HK 430W panels (430W each). Both require the same number of panels.
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Last updated: February 2026