Silfab SIL-410-BG 410W vs Renogy 100W Portable Solar Panel
The Silfab SIL-410-BG 410W wins this comparison by a decisive margin. It delivers more power (410W vs 100W). For most residential installations, the Silfab SIL-410-BG 410W is the stronger choice.
Key Differences
- • Silfab SIL-410-BG 410W is rated at 410W while Renogy 100W Portable Solar Panel is rated at 100W, a 310W difference.
- • Renogy 100W Portable Solar Panel achieves 23.5% efficiency vs 21.2% for the other, a 2.3 percentage point gap.
- • Silfab SIL-410-BG 410W comes with a 25-year product warranty vs 2 years for the other.
- • Silfab SIL-410-BG 410W has a superior temperature coefficient of -0.34%/°C vs -0.37%/°C, retaining more power in hot climates.
- • Silfab SIL-410-BG 410W uses PERC Mono cells while Renogy 100W Portable Solar Panel uses Monocrystalline cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Renogy 100W Portable Solar Panel achieves 23.5% module efficiency compared to Silfab SIL-410-BG 410W's 21.2%, meaning Renogy 100W Portable Solar Panel converts 2.3 percentage points more sunlight into electricity per square meter. In practical terms, the Silfab SIL-410-BG 410W produces 210.0 watts per square meter of panel area while the Renogy 100W Portable Solar Panel produces 525.6 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 Silfab SIL-410-BG 410W delivers 410W per panel versus 100W for the Renogy 100W Portable Solar Panel, a 310W difference per module. To build an 8 kW residential system, you would need 20 Silfab SIL-410-BG 410W panels or 80 Renogy 100W Portable Solar Panel panels. Choosing the higher-wattage option saves 60 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
The Silfab SIL-410-BG 410W has a temperature coefficient of -0.34%/°C versus -0.37%/°C for the Renogy 100W Portable Solar Panel. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the Silfab SIL-410-BG 410W retains 93.2% of its rated power while the other retains 92.6%. 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 Silfab SIL-410-BG 410W is backed by a 25-year product warranty and 30-year performance guarantee, while the Renogy 100W Portable Solar Panel offers 2-year product and 2-year performance coverage. The Silfab SIL-410-BG 410W provides 23 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (1% first year then 0.4%/year for Silfab SIL-410-BG 410W; 2.5% first year then 0.7%/year for Renogy 100W Portable Solar Panel), after 25 years the Silfab SIL-410-BG 410W should retain approximately 89.4% of original output versus 80.7% for the Renogy 100W Portable Solar Panel. This 8.7 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The Silfab SIL-410-BG 410W measures 1722×1134×30mm and weighs 21 kg, while the Renogy 100W Portable Solar Panel measures 506×376×71mm at 4.8 kg. 1.95 m² of panel area for the Silfab SIL-410-BG 410W versus 0.19 m² for the Renogy 100W Portable Solar Panel. The Renogy 100W Portable Solar Panel is 16.2 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 324 kg. The more compact Renogy 100W Portable Solar Panel may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | Silfab SIL-410-BG 410W | Renogy 100W Portable Solar Panel |
|---|---|---|
| Power | 410W | 100W |
| Efficiency | 21.2% | 23.5% |
| Power Density | 19.5 W/sq ft | 48.8 W/sq ft |
| Cell Type | PERC Mono | Monocrystalline |
| Bifacial | No | No |
| Weight | 21 kg | 4.8 kg |
| Temp Coefficient | -0.34%/°C | -0.37%/°C |
| Snow Load | 5400 Pa | N/A |
| Wind Load | 2400 Pa | N/A |
| Product Warranty | 25 years | 2 years |
| Performance Warranty | 30 years | 2 years |
| Degradation (Year 1) | 1% | 2.5% |
| Annual Degradation | 0.4% | 0.7% |
| Country | United States | China |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Renogy 100W Portable Solar PanelThe Renogy 100W Portable Solar Panel achieves 23.5% efficiency versus 21.2% — a 2.3 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 9.3 kW more total system capacity, or 42 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Silfab SIL-410-BG 410WThe Silfab SIL-410-BG 410W has a better temperature coefficient of -0.34%/°C versus -0.37%/°C. On a 45°C summer day (20°C above STC), the winner retains 93.2% of rated power versus 92.6%. The difference is modest but accumulates over 25 years of summer production.
3. Durability & Warranty
Winner: Silfab SIL-410-BG 410WSilfab SIL-410-BG 410W leads with a 25-year product warranty versus 2 years. Silfab SIL-410-BG 410W degrades more slowly at 0.4% per year versus 0.7%. After 25 years, expect 89.4% vs 80.7% of original output for Silfab SIL-410-BG 410W and Renogy 100W Portable Solar Panel respectively.
4. Power Output
Winner: Silfab SIL-410-BG 410WThe Silfab SIL-410-BG 410W delivers 410W versus 100W per panel — 310W more. For an 8 kW system, you need 20 panels with the higher-wattage option versus 80 panels, saving 60 panels and the associated racking and labor costs.
5. Cell Technology
Winner: Renogy 100W Portable Solar PanelThe Silfab SIL-410-BG 410W uses PERC Mono: PERC (Passivated Emitter Rear Cell) is the current mainstream technology, offering good efficiency at the lowest manufacturing cost. The Renogy 100W Portable Solar Panel uses Monocrystalline: Monocrystalline. Monocrystalline represents a newer generation technology with a longer performance runway as manufacturing matures.
Silfab SIL-410-BG 410W
The SIL-410-BG is Silfab's all-black residential PERC panel offering 410W with US manufacturing and a 25-year warranty.
Pros
- + US manufactured
- + All-black aesthetics
- + 25-year warranty
- + ARRA compliant
Cons
- - Standard PERC efficiency
- - Higher cost per watt
- - Limited model range
Renogy 100W Portable Solar Panel
The Renogy 100W Portable Solar Panel is a foldable, lightweight panel with an integrated kickstand and IP65 weather resistance, designed for camping, RV trips, and emergency power. Dimensions listed are folded (506×376×71mm).
Pros
- + Ultra-lightweight at 4.8 kg for portability
- + 23.5% efficiency — high for portable class
- + Integrated adjustable kickstand
- + IP65 water and dust resistance
- + Foldable design for compact storage
Cons
- - 2-year warranty significantly shorter than rigid panels
- - Higher cost per watt than rigid 100W panel
- - Folding design less durable than rigid frame
- - Not suitable for permanent installation
Choose Silfab SIL-410-BG 410W If...
- ✓ You want fewer panels to reach your target system size, reducing racking and labor costs
- ✓ 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
- ✓ Homeowners wanting US-made, all-black panels with Buy America compliance.
Choose Renogy 100W Portable Solar Panel If...
- ✓ Your roof space is limited and you need maximum power per panel
- ✓ Campers, overlanders, and emergency preparedness users needing a compact, grab-and-go solar charging solution.
Our Recommendation
The Silfab SIL-410-BG 410W is the decisive winner in this solar panel comparison, outperforming the Renogy 100W Portable Solar Panel in 3 of 5 dimensions. Unless you have a specific requirement that the Renogy 100W Portable Solar Panel uniquely addresses, the Silfab SIL-410-BG 410W is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, Silfab SIL-410-BG 410W or Renogy 100W Portable Solar Panel?
The Silfab SIL-410-BG 410W wins this comparison by a decisive margin. It delivers more power (410W vs 100W). For most residential installations, the Silfab SIL-410-BG 410W is the stronger choice.
Which panel is more efficient, Silfab SIL-410-BG 410W or Renogy 100W Portable Solar Panel?
The Renogy 100W Portable Solar Panel at 23.5% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 2.3 percentage points translates to approximately 310W per panel under standard test conditions.
Which has a better warranty, Silfab SIL-410-BG 410W or Renogy 100W Portable Solar Panel?
The Silfab SIL-410-BG 410W comes with a 25-year product warranty and 30-year performance guarantee. The Renogy 100W Portable Solar Panel offers 2-year product and 2-year performance warranties. Silfab SIL-410-BG 410W provides 23 additional years of product coverage.
Which panel performs better in hot weather?
The Silfab SIL-410-BG 410W has a temperature coefficient of -0.34%/°C and the Renogy 100W Portable Solar Panel is -0.37%/°C. Silfab SIL-410-BG 410W retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many Silfab SIL-410-BG 410W vs Renogy 100W Portable Solar Panel panels do I need for an 8 kW system?
For an 8 kW system: you need 20 Silfab SIL-410-BG 410W panels (410W each) or 80 Renogy 100W Portable Solar Panel panels (100W each). The Silfab SIL-410-BG 410W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026