JA Solar JAM54S31 415W vs Renogy 100W Portable Solar Panel
The JA Solar JAM54S31 415W wins this comparison by a decisive margin. It delivers more power (415W vs 100W). For most residential installations, the JA Solar JAM54S31 415W is the stronger choice.
Key Differences
- • JA Solar JAM54S31 415W is rated at 415W while Renogy 100W Portable Solar Panel is rated at 100W, a 315W difference.
- • Renogy 100W Portable Solar Panel achieves 23.5% efficiency vs 21.5% for the other, a 2.0 percentage point gap.
- • JA Solar JAM54S31 415W comes with a 12-year product warranty vs 2 years for the other.
- • JA Solar JAM54S31 415W has a superior temperature coefficient of -0.34%/°C vs -0.37%/°C, retaining more power in hot climates.
- • JA Solar JAM54S31 415W 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 JA Solar JAM54S31 415W's 21.5%, meaning Renogy 100W Portable Solar Panel converts 2.0 percentage points more sunlight into electricity per square meter. In practical terms, the JA Solar JAM54S31 415W produces 212.5 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 JA Solar JAM54S31 415W delivers 415W per panel versus 100W for the Renogy 100W Portable Solar Panel, a 315W difference per module. To build an 8 kW residential system, you would need 20 JA Solar JAM54S31 415W 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 JA Solar JAM54S31 415W 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 JA Solar JAM54S31 415W 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 JA Solar JAM54S31 415W is backed by a 12-year product warranty and 25-year performance guarantee, while the Renogy 100W Portable Solar Panel offers 2-year product and 2-year performance coverage. The JA Solar JAM54S31 415W provides 10 additional years of defect protection, covering manufacturing issues, material failures, and premature performance loss. Based on their published degradation rates (1.5% first year then 0.5%/year for JA Solar JAM54S31 415W; 2.5% first year then 0.7%/year for Renogy 100W Portable Solar Panel), after 25 years the JA Solar JAM54S31 415W should retain approximately 86.5% of original output versus 80.7% for the Renogy 100W Portable Solar Panel. This 5.8 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The JA Solar JAM54S31 415W measures 1722×1134×30mm and weighs 21.5 kg, while the Renogy 100W Portable Solar Panel measures 506×376×71mm at 4.8 kg. 1.95 m² of panel area for the JA Solar JAM54S31 415W versus 0.19 m² for the Renogy 100W Portable Solar Panel. The Renogy 100W Portable Solar Panel is 16.7 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 334 kg. The more compact Renogy 100W Portable Solar Panel may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | JA Solar JAM54S31 415W | Renogy 100W Portable Solar Panel |
|---|---|---|
| Power | 415W | 100W |
| Efficiency | 21.5% | 23.5% |
| Power Density | 19.7 W/sq ft | 48.8 W/sq ft |
| Cell Type | PERC Mono | Monocrystalline |
| Bifacial | No | No |
| Weight | 21.5 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 | 12 years | 2 years |
| Performance Warranty | 25 years | 2 years |
| Degradation (Year 1) | 1.5% | 2.5% |
| Annual Degradation | 0.5% | 0.7% |
| Country | China | 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 21.5% — a 2.0 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 9.4 kW more total system capacity, or 43 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: JA Solar JAM54S31 415WThe JA Solar JAM54S31 415W 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: JA Solar JAM54S31 415WJA Solar JAM54S31 415W leads with a 12-year product warranty versus 2 years. JA Solar JAM54S31 415W degrades more slowly at 0.5% per year versus 0.7%. After 25 years, expect 86.5% vs 80.7% of original output for JA Solar JAM54S31 415W and Renogy 100W Portable Solar Panel respectively.
4. Power Output
Winner: JA Solar JAM54S31 415WThe JA Solar JAM54S31 415W delivers 415W versus 100W per panel — 315W 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 JA Solar JAM54S31 415W 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.
JA Solar JAM54S31 415W
The JAM54S31 is a compact residential PERC panel delivering 415W with a solid balance of performance and affordability.
Pros
- + Compact residential form factor
- + Good price-performance ratio
- + Widely available
- + Proven reliability
Cons
- - Lower efficiency vs N-type
- - Higher degradation rate
- - Standard warranty
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 JA Solar JAM54S31 415W 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 12+ 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
- ✓ Budget residential installations seeking reliable PERC performance.
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 JA Solar JAM54S31 415W 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 JA Solar JAM54S31 415W is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, JA Solar JAM54S31 415W or Renogy 100W Portable Solar Panel?
The JA Solar JAM54S31 415W wins this comparison by a decisive margin. It delivers more power (415W vs 100W). For most residential installations, the JA Solar JAM54S31 415W is the stronger choice.
Which panel is more efficient, JA Solar JAM54S31 415W 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 2.0 percentage points translates to approximately 315W per panel under standard test conditions.
Which has a better warranty, JA Solar JAM54S31 415W or Renogy 100W Portable Solar Panel?
The JA Solar JAM54S31 415W comes with a 12-year product warranty and 25-year performance guarantee. The Renogy 100W Portable Solar Panel offers 2-year product and 2-year performance warranties. JA Solar JAM54S31 415W provides 10 additional years of product coverage.
Which panel performs better in hot weather?
The JA Solar JAM54S31 415W has a temperature coefficient of -0.34%/°C and the Renogy 100W Portable Solar Panel is -0.37%/°C. JA Solar JAM54S31 415W retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many JA Solar JAM54S31 415W vs Renogy 100W Portable Solar Panel panels do I need for an 8 kW system?
For an 8 kW system: you need 20 JA Solar JAM54S31 415W panels (415W each) or 80 Renogy 100W Portable Solar Panel panels (100W each). The JA Solar JAM54S31 415W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026