Solar Panels comparison
REC Alpha Pure-R 430W Bifacial Solar Panel vs Silfab 380W Black Solar Panel
Spec-by-spec comparison of the REC Alpha Pure-R 430W Bifacial Solar Panel and Silfab 380W Black Solar Panel, with editorial commentary on which fits which use case.
| REC Alpha Pure-R 430W Bifacial Solar Panel Solar Panel | Silfab 380W Black Solar Panel Solar Panel | |
|---|---|---|
| Price (MSRP) | $236 | $171 |
| Status | Active | Active |
| Wattage (Pmax) | 430 W | 380 W |
| Module efficiency (STC) | 22.3% | 21.4% |
| Cell type | HJT | PERC |
| Bifacial | Yes | No |
| Open-circuit voltage (Voc) | 59.7 V | 45.13 V |
| Short-circuit current (Isc) | 8.91 A | 10.5 A |
| Voltage at Pmax (Vmp) | 50.5 V | 38.88 V |
| Current at Pmax (Imp) | 8.52 A | 9.79 A |
| Front glass | 0.13 in solar glass with anti-reflective surface treatment in accordance with EN12150 | 3.2mm high transmittance, tempered, DSM anti-reflective coating |
| Frame | Anodized aluminum (Black) | Anodized Aluminum (Black) |
| Cable length | 1400 mm | 1200 mm |
| Connector type | STAUBLI | MC4 |
| Dimensions | 1730 × 1118 × 30 mm | 1795 × 990 × 38 mm |
| Weight | 21.5 kg | 19 kg |
| Temp. coefficient (Pmax) | -0.24 %/°C | -0.377 %/°C |
| Temp. coefficient (Voc) | -0.24 %/°C | -0.279 %/°C |
| Temp. coefficient (Isc) | 0.04 %/°C | 0.046 %/°C |
| Mechanical load | 7000 Pa front / 4000 Pa back | 5400 Pa front / 4000 Pa back |
| Operating temp. | -40°C to 80°C | -40°C to 85°C |
| Product warranty | 20 years | 25 years |
| Performance warranty | 25 years | 30 years |
| Buy | current connected → | current connected → |
Where each one wins
REC Alpha Pure-R REC430AA wins on wattage (430W vs 380W), efficiency (22.3% vs 21.4%), temperature coefficient (-0.24 %/°C vs -0.377 %/°C), price ($236.5 vs $171). Higher wattage means fewer panels for the same system size. On a typical 8 kW residential array that is 50 fewer or extra watts per panel — meaningful when roof space is constrained.
Silfab Elite SIL-380-BK wins on product warranty (20 years vs 25 years). Product (workmanship) warranty is what covers the panel itself against defects. Most panels offer 25-year *performance* warranties; only a subset offer 25-year *product* warranties.
The right pick depends on which dimensions matter most to you. The spec table above lays out the full envelope; the chat panel below answers "which one for {use case}" if you want a directed recommendation.
REC
Alpha Pure-R 430W Bifacial Solar Panel
$236
Best for
- ✓ tight roof spaces wanting maximum watts/m²
- ✓ ground-mount or albedo-friendly install with bifacial gain
Silfab
380W Black Solar Panel
$171
Best for
- ✓ long-hold projects (25+ year product warranty)
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