Canadian Solar CS6R 420W vs Risen Energy Titan S 440W
The Risen Energy Titan S 440W wins this comparison by a clear margin. It leads in efficiency (22.1% vs 21%) and matches or exceeds on warranty (12 vs 12 years). For most residential installations, the Risen Energy Titan S 440W is the stronger choice.
Key Differences
- • Canadian Solar CS6R 420W is rated at 420W while Risen Energy Titan S 440W is rated at 440W, a 20W difference.
- • Risen Energy Titan S 440W achieves 22.1% efficiency vs 21% for the other, a 1.1 percentage point gap.
- • Both carry matching 12-year product warranties.
- • Risen Energy Titan S 440W has a superior temperature coefficient of -0.29%/°C vs -0.34%/°C, retaining more power in hot climates.
- • Canadian Solar CS6R 420W uses PERC Mono cells while Risen Energy Titan S 440W uses TOPCon N-type cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Risen Energy Titan S 440W achieves 22.1% module efficiency compared to Canadian Solar CS6R 420W's 21%, meaning Risen Energy Titan S 440W converts 1.1 percentage points more sunlight into electricity per square meter. In practical terms, the Canadian Solar CS6R 420W produces 215.1 watts per square meter of panel area while the Risen Energy Titan S 440W produces 225.3 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 Risen Energy Titan S 440W delivers 440W per panel versus 420W for the Canadian Solar CS6R 420W, a 20W difference per module. To build an 8 kW residential system, you would need 20 Canadian Solar CS6R 420W panels or 19 Risen Energy Titan S 440W panels. Choosing the higher-wattage option saves 1 panel, 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 Risen Energy Titan S 440W has a temperature coefficient of -0.29%/°C versus -0.34%/°C for the Canadian Solar CS6R 420W. On a hot summer day when cell temperature reaches 65°C (40°C above the 25°C STC baseline), the Risen Energy Titan S 440W retains 94.2% of its rated power while the other retains 93.2%. 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 Canadian Solar CS6R 420W is backed by a 12-year product warranty and 25-year performance guarantee, while the Risen Energy Titan S 440W offers 12-year product and 25-year performance coverage. Both offer identical product warranty duration. Based on their published degradation rates (1.5% first year then 0.5%/year for Canadian Solar CS6R 420W; 1% first year then 0.4%/year for Risen Energy Titan S 440W), after 25 years the Canadian Solar CS6R 420W should retain approximately 86.5% of original output versus 89.4% for the Risen Energy Titan S 440W. This 2.9 percentage point gap in end-of-life output meaningfully impacts lifetime energy economics.
Physical Dimensions & Weight
The Canadian Solar CS6R 420W measures 1722×1134×30mm and weighs 21 kg, while the Risen Energy Titan S 440W measures 1722×1134×30mm at 21.5 kg. 1.95 m² of panel area for the Canadian Solar CS6R 420W versus 1.95 m² for the Risen Energy Titan S 440W. 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 | Canadian Solar CS6R 420W | Risen Energy Titan S 440W |
|---|---|---|
| Power | 420W | 440W |
| Efficiency | 21% | 22.1% |
| Power Density | 20.0 W/sq ft | 20.9 W/sq ft |
| Cell Type | PERC Mono | TOPCon N-type |
| Bifacial | No | Yes |
| Weight | 21 kg | 21.5 kg |
| Temp Coefficient | -0.34%/°C | -0.29%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 12 years | 12 years |
| Performance Warranty | 25 years | 25 years |
| Degradation (Year 1) | 1.5% | 1% |
| Annual Degradation | 0.5% | 0.4% |
| Country | China | China |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Risen Energy Titan S 440WThe Risen Energy Titan S 440W achieves 22.1% efficiency versus 21% — a 1.1 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 0.6 kW more total system capacity, or 3 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: Risen Energy Titan S 440WThe Risen Energy Titan S 440W has a better temperature coefficient of -0.29%/°C versus -0.34%/°C. On a 45°C summer day (20°C above STC), the winner retains 94.2% of rated power versus 93.2%. This is a meaningful difference in hot states like Arizona, Texas, and Florida.
3. Durability & Warranty
Winner: Risen Energy Titan S 440WRisen Energy Titan S 440W degrades more slowly at 0.4% per year versus 0.5%. After 25 years, expect 86.5% vs 89.4% of original output for Canadian Solar CS6R 420W and Risen Energy Titan S 440W respectively.
4. Power Output
Winner: Risen Energy Titan S 440WThe Risen Energy Titan S 440W delivers 440W versus 420W per panel — 20W more. For an 8 kW system, you need 19 panels with the higher-wattage option versus 20 panels, saving 1 panels and the associated racking and labor costs.
5. Cell Technology
Winner: Risen Energy Titan S 440WThe Canadian Solar CS6R 420W uses PERC Mono: PERC (Passivated Emitter Rear Cell) is the current mainstream technology, offering good efficiency at the lowest manufacturing cost. The Risen Energy Titan S 440W 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.
Canadian Solar CS6R 420W
The CS6R is Canadian Solar's residential PERC workhorse delivering 420W in a compact, roof-friendly form factor.
Pros
- + Compact residential size
- + Affordable pricing
- + Proven track record
- + Easy installation
Cons
- - Older PERC technology
- - Standard performance
- - Higher degradation
Risen Energy Titan S 440W
Risen Energy Titan S delivers 440W with TOPCon N-type technology in a compact residential format at a competitive price.
Pros
- + Competitive N-type pricing
- + Good residential size
- + 22.1% efficiency
- + Growing brand recognition
Cons
- - Less established brand in US
- - Standard warranty
- - Limited dealer network
Choose Canadian Solar CS6R 420W If...
- ✓ Budget residential installations from a bankable Tier 1 brand.
Choose Risen Energy Titan S 440W 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 want maximum output retention over the system's 25-30 year lifespan
- ✓ You prefer newer cell technology with a longer performance improvement runway
Our Recommendation
We recommend the Risen Energy Titan S 440W for most buyers in this comparison. It wins 5 of 5 key dimensions and offers a clear advantage in the metrics that matter most for a solar panel purchase. The Canadian Solar CS6R 420W remains a good product, but the Risen Energy Titan S 440W delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, Canadian Solar CS6R 420W or Risen Energy Titan S 440W?
The Risen Energy Titan S 440W wins this comparison by a clear margin. It leads in efficiency (22.1% vs 21%) and matches or exceeds on warranty (12 vs 12 years). For most residential installations, the Risen Energy Titan S 440W is the stronger choice.
Which panel is more efficient, Canadian Solar CS6R 420W or Risen Energy Titan S 440W?
The Risen Energy Titan S 440W at 22.1% module efficiency. Higher efficiency means more watts per square foot of roof space, which is critical for space-constrained installations. The difference of 1.1 percentage points translates to approximately 20W per panel under standard test conditions.
Which has a better warranty, Canadian Solar CS6R 420W or Risen Energy Titan S 440W?
The Canadian Solar CS6R 420W comes with a 12-year product warranty and 25-year performance guarantee. The Risen Energy Titan S 440W offers 12-year product and 25-year performance warranties. Both offer identical warranty terms.
Which panel performs better in hot weather?
The Canadian Solar CS6R 420W has a temperature coefficient of -0.34%/°C and the Risen Energy Titan S 440W is -0.29%/°C. Risen Energy Titan S 440W retains more power in heat — important in states like Arizona, Texas, and Florida. A lower (less negative) temperature coefficient is better.
How many Canadian Solar CS6R 420W vs Risen Energy Titan S 440W panels do I need for an 8 kW system?
For an 8 kW system: you need 20 Canadian Solar CS6R 420W panels (420W each) or 19 Risen Energy Titan S 440W panels (440W each). The Risen Energy Titan S 440W requires fewer panels, saving on racking hardware and installation labor.
Related Resources
Last updated: February 2026