First Solar Series 6 Plus 465W vs Aptos Solar DNA-108-BF10 415W
The Aptos Solar DNA-108-BF10 415W wins this comparison by a decisive margin. It leads in efficiency (21.25% vs 19.2%) and matches or exceeds on warranty (30 vs 10 years). For most residential installations, the Aptos Solar DNA-108-BF10 415W is the stronger choice.
Key Differences
- • First Solar Series 6 Plus 465W is rated at 465W while Aptos Solar DNA-108-BF10 415W is rated at 415W, a 50W difference.
- • Aptos Solar DNA-108-BF10 415W achieves 21.25% efficiency vs 19.2% for the other, a 2.1 percentage point gap.
- • Aptos Solar DNA-108-BF10 415W comes with a 30-year product warranty vs 10 years for the other.
- • First Solar Series 6 Plus 465W has a superior temperature coefficient of -0.28%/°C vs -0.32%/°C, retaining more power in hot climates.
- • First Solar Series 6 Plus 465W uses CdTe (Cadmium Telluride) cells while Aptos Solar DNA-108-BF10 415W uses PERC Mono Bifacial cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Aptos Solar DNA-108-BF10 415W achieves 21.25% module efficiency compared to First Solar Series 6 Plus 465W's 19.2%, meaning Aptos Solar DNA-108-BF10 415W converts 2.1 percentage points more sunlight into electricity per square meter. In practical terms, the First Solar Series 6 Plus 465W produces 187.9 watts per square meter of panel area while the Aptos Solar DNA-108-BF10 415W produces 212.5 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 First Solar Series 6 Plus 465W delivers 465W per panel versus 415W for the Aptos Solar DNA-108-BF10 415W, a 50W difference per module. To build an 8 kW residential system, you would need 18 First Solar Series 6 Plus 465W panels or 20 Aptos Solar DNA-108-BF10 415W 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 First Solar Series 6 Plus 465W has a temperature coefficient of -0.28%/°C versus -0.32%/°C for the Aptos Solar DNA-108-BF10 415W. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the First Solar Series 6 Plus 465W retains 94.4% of its rated power while the other retains 93.6%. 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 First Solar Series 6 Plus 465W is backed by a 10-year product warranty and 30-year performance guarantee, while the Aptos Solar DNA-108-BF10 415W offers 30-year product and 30-year performance coverage. The Aptos Solar DNA-108-BF10 415W provides 20 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 First Solar Series 6 Plus 465W; 1% first year then 0.54%/year for Aptos Solar DNA-108-BF10 415W), after 25 years the First Solar Series 6 Plus 465W should retain approximately 86.5% of original output versus 86.0% for the Aptos Solar DNA-108-BF10 415W. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The First Solar Series 6 Plus 465W measures 2009×1232×49mm and weighs 34.5 kg, while the Aptos Solar DNA-108-BF10 415W measures 1722×1134×35mm at 22 kg. 2.48 m² of panel area for the First Solar Series 6 Plus 465W versus 1.95 m² for the Aptos Solar DNA-108-BF10 415W. The Aptos Solar DNA-108-BF10 415W is 12.5 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 250 kg. The more compact Aptos Solar DNA-108-BF10 415W may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | First Solar Series 6 Plus 465W | Aptos Solar DNA-108-BF10 415W |
|---|---|---|
| Power | 465W | 415W |
| Efficiency | 19.2% | 21.25% |
| Power Density | 17.5 W/sq ft | 19.7 W/sq ft |
| Cell Type | CdTe (Cadmium Telluride) | PERC Mono Bifacial |
| Bifacial | No | Yes |
| Weight | 34.5 kg | 22 kg |
| Temp Coefficient | -0.28%/°C | -0.32%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 4000 Pa | 4000 Pa |
| Product Warranty | 10 years | 30 years |
| Performance Warranty | 30 years | 30 years |
| Degradation (Year 1) | 1.5% | 1% |
| Annual Degradation | 0.5% | 0.54% |
| Country | United States | Vietnam |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Aptos Solar DNA-108-BF10 415WThe Aptos Solar DNA-108-BF10 415W achieves 21.25% efficiency versus 19.2% — a 2.1 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 1.5 kW more total system capacity, or 7 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: First Solar Series 6 Plus 465WThe First Solar Series 6 Plus 465W has a better temperature coefficient of -0.28%/°C versus -0.32%/°C. On a 45°C summer day (20°C above STC), the winner retains 94.4% of rated power versus 93.6%. The difference is modest but accumulates over 25 years of summer production.
3. Durability & Warranty
Winner: Aptos Solar DNA-108-BF10 415WAptos Solar DNA-108-BF10 415W leads with a 30-year product warranty versus 10 years. First Solar Series 6 Plus 465W degrades more slowly at 0.5% per year versus 0.54%. After 25 years, expect 86.5% vs 86.0% of original output for First Solar Series 6 Plus 465W and Aptos Solar DNA-108-BF10 415W respectively.
4. Power Output
Winner: First Solar Series 6 Plus 465WThe First Solar Series 6 Plus 465W delivers 465W versus 415W per panel — 50W 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: First Solar Series 6 Plus 465WThe First Solar Series 6 Plus 465W uses CdTe (Cadmium Telluride): CdTe (Cadmium Telluride). The Aptos Solar DNA-108-BF10 415W uses PERC Mono Bifacial: PERC (Passivated Emitter Rear Cell) is the current mainstream technology, offering good efficiency at the lowest manufacturing cost. CdTe (Cadmium Telluride) represents a newer generation technology with a longer performance runway as manufacturing matures.
First Solar Series 6 Plus 465W
The Series 6 Plus delivers 465W using First Solar's proven CdTe thin-film technology, manufactured in the United States.
Pros
- + Proven US thin-film technology
- + Excellent temperature coefficient
- + Environmentally responsible
- + Strong bankability
Cons
- - Lower efficiency
- - Very heavy panel
- - Not suitable for residential
Aptos Solar DNA-108-BF10 415W
Aptos Solar DNA-108-BF10 is a 415W bifacial residential panel with up to 30% rear-side energy gain using patented DNA technology and 108 half-cut cells.
Pros
- + Bifacial design captures up to 30% additional rear-side energy
- + 30-year dual warranty for product and performance
- + Compact 108-cell format for residential rooftops
- + All-black aesthetic
Cons
- - Bifacial gain requires reflective ground surface or elevated mounting
- - PERC technology vs newer N-type alternatives
- - Slightly heavier than monofacial version
Choose First Solar Series 6 Plus 465W If...
- ✓ 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 want maximum output retention over the system's 25-30 year lifespan
- ✓ Large commercial and utility projects wanting proven US thin-film technology.
Choose Aptos Solar DNA-108-BF10 415W If...
- ✓ Your roof space is limited and you need maximum power per panel
- ✓ Long-term warranty protection is a top priority and you plan to stay in your home for 30+ years
- ✓ Homeowners with ground-mount or elevated roof installations who want additional energy from bifacial rear-side capture.
Our Recommendation
The Aptos Solar DNA-108-BF10 415W is the decisive winner in this solar panel comparison, outperforming the First Solar Series 6 Plus 465W in 2 of 5 dimensions. Unless you have a specific requirement that the First Solar Series 6 Plus 465W uniquely addresses, the Aptos Solar DNA-108-BF10 415W is the stronger choice for virtually every installation scenario.
Frequently Asked Questions
Which is better, First Solar Series 6 Plus 465W or Aptos Solar DNA-108-BF10 415W?
The Aptos Solar DNA-108-BF10 415W wins this comparison by a decisive margin. It leads in efficiency (21.25% vs 19.2%) and matches or exceeds on warranty (30 vs 10 years). For most residential installations, the Aptos Solar DNA-108-BF10 415W is the stronger choice.
Which panel is more efficient, First Solar Series 6 Plus 465W or Aptos Solar DNA-108-BF10 415W?
The Aptos Solar DNA-108-BF10 415W at 21.25% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 2.1 percentage points translates to approximately 50W per panel under standard test conditions.
Which has a better warranty, First Solar Series 6 Plus 465W or Aptos Solar DNA-108-BF10 415W?
The First Solar Series 6 Plus 465W comes with a 10-year product warranty and 30-year performance guarantee. The Aptos Solar DNA-108-BF10 415W offers 30-year product and 30-year performance warranties. Aptos Solar DNA-108-BF10 415W provides 20 additional years of product coverage.
Which panel performs better in hot weather?
The First Solar Series 6 Plus 465W has a temperature coefficient of -0.28%/°C and the Aptos Solar DNA-108-BF10 415W is -0.32%/°C. First Solar Series 6 Plus 465W retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many First Solar Series 6 Plus 465W vs Aptos Solar DNA-108-BF10 415W panels do I need for an 8 kW system?
For an 8 kW system: you need 18 First Solar Series 6 Plus 465W panels (465W each) or 20 Aptos Solar DNA-108-BF10 415W panels (415W each). The First Solar Series 6 Plus 465W requires fewer panels, saving on racking hardware and installation labor.
Related Resources
Last updated: February 2026