Silfab SIL-370-BK 370W vs Hanwha Q.TRON G11S 410W
The Hanwha Q.TRON G11S 410W wins this comparison by a clear margin. It leads in efficiency (21.3% vs 20.4%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Hanwha Q.TRON G11S 410W is the stronger choice.
Key Differences
- • Silfab SIL-370-BK 370W is rated at 370W while Hanwha Q.TRON G11S 410W is rated at 410W, a 40W difference.
- • Hanwha Q.TRON G11S 410W achieves 21.3% efficiency vs 20.4% for the other, a 0.9 percentage point gap.
- • Both carry matching 25-year product warranties.
- • Hanwha Q.TRON G11S 410W has a superior temperature coefficient of -0.29%/°C vs -0.35%/°C, retaining more power in hot climates.
- • Silfab SIL-370-BK 370W uses PERC Mono cells while Hanwha Q.TRON G11S 410W uses TOPCon N-type cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Hanwha Q.TRON G11S 410W achieves 21.3% module efficiency compared to Silfab SIL-370-BK 370W's 20.4%, meaning Hanwha Q.TRON G11S 410W converts 0.9 percentage points more sunlight into electricity per square meter. In practical terms, the Silfab SIL-370-BK 370W produces 189.5 watts per square meter of panel area while the Hanwha Q.TRON G11S 410W produces 210.0 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 Hanwha Q.TRON G11S 410W delivers 410W per panel versus 370W for the Silfab SIL-370-BK 370W, a 40W difference per module. To build an 8 kW residential system, you would need 22 Silfab SIL-370-BK 370W panels or 20 Hanwha Q.TRON G11S 410W 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
The Hanwha Q.TRON G11S 410W has a temperature coefficient of -0.29%/°C versus -0.35%/°C for the Silfab SIL-370-BK 370W. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the Hanwha Q.TRON G11S 410W retains 94.2% of its rated power while the other retains 93.0%. 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 Silfab SIL-370-BK 370W is backed by a 25-year product warranty and 25-year performance guarantee, while the Hanwha Q.TRON G11S 410W offers 25-year product and 25-year performance coverage. Both offer identical product warranty duration. Based on their published degradation rates (1% first year then 0.4%/year for Silfab SIL-370-BK 370W; 1% first year then 0.4%/year for Hanwha Q.TRON G11S 410W), after 25 years the Silfab SIL-370-BK 370W should retain approximately 89.4% of original output versus 89.4% for the Hanwha Q.TRON G11S 410W. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The Silfab SIL-370-BK 370W measures 1722×1134×30mm and weighs 19.5 kg, while the Hanwha Q.TRON G11S 410W measures 1722×1134×30mm at 20.8 kg. 1.95 m² of panel area for the Silfab SIL-370-BK 370W versus 1.95 m² for the Hanwha Q.TRON G11S 410W. 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 | Silfab SIL-370-BK 370W | Hanwha Q.TRON G11S 410W |
|---|---|---|
| Power | 370W | 410W |
| Efficiency | 20.4% | 21.3% |
| Power Density | 17.6 W/sq ft | 19.5 W/sq ft |
| Cell Type | PERC Mono | TOPCon N-type |
| Bifacial | No | No |
| Weight | 19.5 kg | 20.8 kg |
| Temp Coefficient | -0.35%/°C | -0.29%/°C |
| Snow Load | 2400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 25 years | 25 years |
| Performance Warranty | 25 years | 25 years |
| Degradation (Year 1) | 1% | 1% |
| Annual Degradation | 0.4% | 0.4% |
| Country | United States | South Korea |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Hanwha Q.TRON G11S 410WThe Hanwha Q.TRON G11S 410W achieves 21.3% efficiency versus 20.4% — a 0.9 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: Hanwha Q.TRON G11S 410WThe Hanwha Q.TRON G11S 410W has a better temperature coefficient of -0.29%/°C versus -0.35%/°C. On a 45°C summer day (20°C above STC), the winner retains 94.2% of rated power versus 93.0%. This is a meaningful difference in hot states like Arizona, Texas, and Florida.
3. Durability & Warranty
Winner: TieBoth panels offer identical 25-year product warranties and 0.4% annual degradation. Neither has a durability advantage.
4. Power Output
Winner: Hanwha Q.TRON G11S 410WThe Hanwha Q.TRON G11S 410W delivers 410W versus 370W per panel — 40W more. For an 8 kW system, you need 20 panels with the higher-wattage option versus 22 panels, saving 2 panels and the associated racking and labor costs.
5. Cell Technology
Winner: Hanwha Q.TRON G11S 410WThe Silfab SIL-370-BK 370W uses PERC Mono: PERC (Passivated Emitter Rear Cell) is the current mainstream technology, offering good efficiency at the lowest manufacturing cost. The Hanwha Q.TRON G11S 410W uses TOPCon N-type: TOPCon (Tunnel Oxide Passivated Contact) adds a thin tunnel oxide layer to reduce recombination losses, achieving higher efficiency than PERC while being manufacturable on existing production lines. TOPCon N-type represents a newer generation technology with a longer performance runway as manufacturing matures.
Silfab SIL-370-BK 370W
The SIL-370-BK is Silfab's entry-level US-made all-black panel delivering 370W for budget-conscious domestic installations.
Pros
- + Made in USA
- + All-black design
- + 25-year warranty
- + ARRA compliant
Cons
- - Lower wattage
- - Basic PERC technology
- - Less competitive efficiency
Hanwha Q.TRON G11S 410W
The Hanwha Q.TRON G11S delivers 410W N-type TOPCon performance in a compact residential format with a strong 25-year warranty.
Pros
- + 25-year product warranty
- + N-type TOPCon cells
- + Compact size
- + Korean quality
Cons
- - Moderate wattage
- - Premium pricing
- - Limited color options
Choose Silfab SIL-370-BK 370W If...
- ✓ Government or institutional projects requiring ARRA/Buy America compliance.
Choose Hanwha Q.TRON G11S 410W 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
- ✓ Residential installations valuing Korean quality with strong warranty.
Our Recommendation
We recommend the Hanwha Q.TRON G11S 410W for most buyers in this comparison. It wins 4 of 5 key dimensions and offers a clear advantage in the metrics that matter most for a solar panel purchase. The Silfab SIL-370-BK 370W remains a good product, but the Hanwha Q.TRON G11S 410W delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, Silfab SIL-370-BK 370W or Hanwha Q.TRON G11S 410W?
The Hanwha Q.TRON G11S 410W wins this comparison by a clear margin. It leads in efficiency (21.3% vs 20.4%) and matches or exceeds on warranty (25 vs 25 years). For most residential installations, the Hanwha Q.TRON G11S 410W is the stronger choice.
Which panel is more efficient, Silfab SIL-370-BK 370W or Hanwha Q.TRON G11S 410W?
The Hanwha Q.TRON G11S 410W at 21.3% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 0.9 percentage points translates to approximately 40W per panel under standard test conditions.
Which has a better warranty, Silfab SIL-370-BK 370W or Hanwha Q.TRON G11S 410W?
The Silfab SIL-370-BK 370W comes with a 25-year product warranty and 25-year performance guarantee. The Hanwha Q.TRON G11S 410W offers 25-year product and 25-year performance warranties. Both offer identical warranty terms.
Which panel performs better in hot weather?
The Silfab SIL-370-BK 370W has a temperature coefficient of -0.35%/°C and the Hanwha Q.TRON G11S 410W is -0.29%/°C. Hanwha Q.TRON G11S 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-370-BK 370W vs Hanwha Q.TRON G11S 410W panels do I need for an 8 kW system?
For an 8 kW system: you need 22 Silfab SIL-370-BK 370W panels (370W each) or 20 Hanwha Q.TRON G11S 410W panels (410W each). The Hanwha Q.TRON G11S 410W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026