REC Alpha Pure-R 460W vs Meyer Burger White 400W
The REC Alpha Pure-R 460W wins this comparison by a narrow margin. It leads in efficiency (22.2% vs 21.7%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the REC Alpha Pure-R 460W is the stronger choice.
Key Differences
- • REC Alpha Pure-R 460W is rated at 460W while Meyer Burger White 400W is rated at 400W, a 60W difference.
- • REC Alpha Pure-R 460W achieves 22.2% efficiency vs 21.7% for the other, a 0.5 percentage point gap.
- • Both carry matching 25-year product warranties.
- • REC Alpha Pure-R 460W uses HJT (Heterojunction) cells while Meyer Burger White 400W uses HJT (Heterojunction) N-type cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The REC Alpha Pure-R 460W achieves 22.2% module efficiency compared to Meyer Burger White 400W's 21.7%, meaning REC Alpha Pure-R 460W converts 0.5 percentage points more sunlight into electricity per square meter. In practical terms, the REC Alpha Pure-R 460W produces 220.9 watts per square meter of panel area while the Meyer Burger White 400W 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 REC Alpha Pure-R 460W delivers 460W per panel versus 400W for the Meyer Burger White 400W, a 60W difference per module. To build an 8 kW residential system, you would need 18 REC Alpha Pure-R 460W panels or 20 Meyer Burger White 400W panels. Choosing the higher-wattage option saves 2 panels, 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
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 REC Alpha Pure-R 460W is backed by a 25-year product warranty and 25-year performance guarantee, while the Meyer Burger White 400W offers 25-year product and 30-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-R 460W; 1% first year then 0.25%/year for Meyer Burger White 400W), after 25 years the REC Alpha Pure-R 460W should retain approximately 91.1% of original output versus 93.0% for the Meyer Burger White 400W. This 1.9 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The REC Alpha Pure-R 460W measures 1728×1205×30mm and weighs 23 kg, while the Meyer Burger White 400W measures 1722×1134×35mm at 21 kg. 2.08 m² of panel area for the REC Alpha Pure-R 460W versus 1.95 m² for the Meyer Burger White 400W. The Meyer Burger White 400W 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 Meyer Burger White 400W may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | REC Alpha Pure-R 460W | Meyer Burger White 400W |
|---|---|---|
| Power | 460W | 400W |
| Efficiency | 22.2% | 21.7% |
| Power Density | 20.5 W/sq ft | 19.0 W/sq ft |
| Cell Type | HJT (Heterojunction) | HJT (Heterojunction) N-type |
| Bifacial | Yes | No |
| Weight | 23 kg | 21 kg |
| Temp Coefficient | -0.26%/°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 | 30 years |
| Degradation (Year 1) | 0.5% | 1% |
| Annual Degradation | 0.35% | 0.25% |
| Country | Singapore | Germany |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: REC Alpha Pure-R 460WThe REC Alpha Pure-R 460W achieves 22.2% efficiency versus 21.7% — a 0.5 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 1.8 kW more total system capacity, or 9 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: Meyer Burger White 400WMeyer Burger White 400W degrades more slowly at 0.25% per year versus 0.35%. After 25 years, expect 91.1% vs 93.0% of original output for REC Alpha Pure-R 460W and Meyer Burger White 400W respectively.
4. Power Output
Winner: REC Alpha Pure-R 460WThe REC Alpha Pure-R 460W delivers 460W versus 400W per panel — 60W more. For an 8 kW system, you need 18 panels with the higher-wattage option versus 20 panels, saving 2 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieThe REC Alpha Pure-R 460W 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. The Meyer Burger White 400W uses HJT (Heterojunction) N-type: 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.
REC Alpha Pure-R 460W
REC's Alpha Pure-R 460W delivers HJT performance in a larger format, combining high output with HJT's superior temperature and degradation performance. Note: model naming may vary by region.
Pros
- + High 460W HJT output
- + 25-year product warranty
- + Excellent heat tolerance
- + Low degradation
Cons
- - Large form factor
- - Premium pricing
- - Regional availability varies
Meyer Burger White 400W
The Meyer Burger White 400W is a premium heterojunction (HJT) panel manufactured in Germany, featuring an industry-leading -0.26%/°C temperature coefficient that delivers superior energy yield in hot climates. The HJT cell architecture provides excellent low-light performance and bifacial-ready construction. Meyer Burger's 25-year product warranty and 30-year performance guarantee (92% at year 30) reflect confidence in their proprietary SmartWire Connection Technology (SWCT). A premium European-manufactured alternative to Asian-produced panels.
Pros
- + Industry-leading -0.26%/°C temperature coefficient — best-in-class hot climate performance
- + Made in Germany with European quality standards
- + 25-year product warranty — among the longest in the industry
- + 30-year performance warranty with only 0.25% annual degradation
- + HJT technology delivers excellent low-light and cloudy day performance
- + Bifacial-ready construction for additional energy gain
Cons
- - Premium pricing — $0.50-$0.60/W vs $0.25-$0.35/W for mainstream panels
- - 400W output is modest by current standards
- - Limited US distribution and installer familiarity
- - Meyer Burger has faced financial challenges affecting supply stability
Choose REC Alpha Pure-R 460W 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
- ✓ Commercial and large residential systems prioritizing longevity and heat tolerance.
Choose Meyer Burger White 400W If...
- ✓ You want maximum output retention over the system's 25-30 year lifespan
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Quality-focused homeowners in hot climates who want European-manufactured HJT panels with the best temperature performance and longest warranties available.
Our Recommendation
Both the REC Alpha Pure-R 460W and Meyer Burger White 400W are excellent solar panel options, and the margin between them is narrow. The REC Alpha Pure-R 460W 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, REC Alpha Pure-R 460W or Meyer Burger White 400W?
The REC Alpha Pure-R 460W wins this comparison by a narrow margin. It leads in efficiency (22.2% vs 21.7%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the REC Alpha Pure-R 460W is the stronger choice.
Which panel is more efficient, REC Alpha Pure-R 460W or Meyer Burger White 400W?
The REC Alpha Pure-R 460W 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 0.5 percentage points translates to approximately 60W per panel under standard test conditions.
Which has a better warranty, REC Alpha Pure-R 460W or Meyer Burger White 400W?
The REC Alpha Pure-R 460W comes with a 25-year product warranty and 25-year performance guarantee. The Meyer Burger White 400W offers 25-year product and 30-year performance warranties. Both offer identical warranty terms.
Which panel performs better in hot weather?
The REC Alpha Pure-R 460W has a temperature coefficient of -0.26%/°C and the Meyer Burger White 400W is -0.26%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many REC Alpha Pure-R 460W vs Meyer Burger White 400W panels do I need for an 8 kW system?
For an 8 kW system: you need 18 REC Alpha Pure-R 460W panels (460W each) or 20 Meyer Burger White 400W panels (400W each). The REC Alpha Pure-R 460W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026