REC Alpha Pure-RX 470W vs Panasonic EverVolt HK 430W
The REC Alpha Pure-RX 470W wins this comparison by a clear margin. It leads in efficiency (22.6% vs 22.2%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the REC Alpha Pure-RX 470W is the stronger choice.
Key Differences
- • REC Alpha Pure-RX 470W is rated at 470W while Panasonic EverVolt HK 430W is rated at 430W, a 40W difference.
- • REC Alpha Pure-RX 470W achieves 22.6% efficiency vs 22.2% for the other, a 0.4 percentage point gap.
- • Both carry matching 25-year product warranties.
- • REC Alpha Pure-RX 470W has a superior temperature coefficient of -0.24%/°C vs -0.26%/°C, retaining more power in hot climates.
Specifications Breakdown
Module Efficiency
The REC Alpha Pure-RX 470W achieves 22.6% module efficiency compared to Panasonic EverVolt HK 430W's 22.2%, meaning REC Alpha Pure-RX 470W converts 0.4 percentage points more sunlight into electricity per square meter. In practical terms, the REC Alpha Pure-RX 470W produces 225.7 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
The REC Alpha Pure-RX 470W delivers 470W per panel versus 430W for the Panasonic EverVolt HK 430W, a 40W difference per module. To build an 8 kW residential system, you would need 18 REC Alpha Pure-RX 470W panels or 19 Panasonic EverVolt HK 430W 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 REC Alpha Pure-RX 470W has a temperature coefficient of -0.24%/°C versus -0.26%/°C for the Panasonic EverVolt HK 430W. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the REC Alpha Pure-RX 470W retains 95.2% of its rated power while the other retains 94.8%. 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 REC Alpha Pure-RX 470W is backed by a 25-year product warranty and 25-year performance guarantee, while the Panasonic EverVolt HK 430W 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 REC Alpha Pure-RX 470W; 0.5% first year then 0.35%/year for Panasonic EverVolt HK 430W), after 25 years the REC Alpha Pure-RX 470W should retain approximately 91.1% of original output versus 91.1% for the Panasonic EverVolt HK 430W. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The REC Alpha Pure-RX 470W measures 1728×1205×30mm and weighs 22.7 kg, while the Panasonic EverVolt HK 430W measures 1722×1134×30mm at 22.5 kg. 2.08 m² of panel area for the REC Alpha Pure-RX 470W 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. The more compact Panasonic EverVolt HK 430W may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | REC Alpha Pure-RX 470W | Panasonic EverVolt HK 430W |
|---|---|---|
| Power | 470W | 430W |
| Efficiency | 22.6% | 22.2% |
| Power Density | 21.0 W/sq ft | 20.5 W/sq ft |
| Cell Type | HJT (Heterojunction) | HJT (Heterojunction) |
| Bifacial | Yes | Yes |
| Weight | 22.7 kg | 22.5 kg |
| Temp Coefficient | -0.24%/°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) | 0.5% | 0.5% |
| Annual Degradation | 0.35% | 0.35% |
| Country | Singapore | Japan |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: REC Alpha Pure-RX 470WThe REC Alpha Pure-RX 470W achieves 22.6% efficiency versus 22.2% — a 0.4 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 1.2 kW more total system capacity, or 6 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: REC Alpha Pure-RX 470WThe REC Alpha Pure-RX 470W has a better temperature coefficient of -0.24%/°C versus -0.26%/°C. On a 45°C summer day (20°C above STC), the winner retains 95.2% of rated power versus 94.8%. The difference is modest but accumulates over 25 years of summer production.
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: REC Alpha Pure-RX 470WThe REC Alpha Pure-RX 470W delivers 470W versus 430W per panel — 40W more. For an 8 kW system, you need 18 panels with the higher-wattage option versus 19 panels, saving 1 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.
REC Alpha Pure-RX 470W
The REC Alpha Pure-RX features advanced HJT cells delivering 470W with an industry-leading 25-year product warranty and exceptional temperature performance. Performance warranty guarantees 92% at year 25.
Pros
- + Industry-leading 25-year product warranty
- + Excellent -0.24%/°C temp coefficient
- + HJT technology for superior longevity
- + Lead-free REC Pure soldering
Cons
- - Premium pricing
- - Limited production capacity
- - Specialized dimensions
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 REC Alpha Pure-RX 470W 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 live in a hot climate (Arizona, Texas, Florida) where heat performance matters
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Homeowners in hot climates who prioritize warranty and long-term performance.
Choose Panasonic EverVolt HK 430W If...
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ No longer available for new installations.
Our Recommendation
We recommend the REC Alpha Pure-RX 470W 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 EverVolt HK 430W remains a good product, but the REC Alpha Pure-RX 470W delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, REC Alpha Pure-RX 470W or Panasonic EverVolt HK 430W?
The REC Alpha Pure-RX 470W wins this comparison by a clear margin. It leads in efficiency (22.6% vs 22.2%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the REC Alpha Pure-RX 470W is the stronger choice.
Which panel is more efficient, REC Alpha Pure-RX 470W or Panasonic EverVolt HK 430W?
The REC Alpha Pure-RX 470W at 22.6% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.4 percentage points translates to approximately 40W per panel under standard test conditions.
Which has a better warranty, REC Alpha Pure-RX 470W or Panasonic EverVolt HK 430W?
The REC Alpha Pure-RX 470W comes with a 25-year product warranty and 25-year performance guarantee. The Panasonic EverVolt HK 430W offers 25-year product and 25-year performance warranties. Both offer identical warranty terms.
Which panel performs better in hot weather?
The REC Alpha Pure-RX 470W has a temperature coefficient of -0.24%/°C and the Panasonic EverVolt HK 430W is -0.26%/°C. REC Alpha Pure-RX 470W retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many REC Alpha Pure-RX 470W vs Panasonic EverVolt HK 430W panels do I need for an 8 kW system?
For an 8 kW system: you need 18 REC Alpha Pure-RX 470W panels (470W each) or 19 Panasonic EverVolt HK 430W panels (430W each). The REC Alpha Pure-RX 470W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026