Canadian Solar TOPBiHiKu7 580W vs Seraphim SRP-445-BMA-HV
The Canadian Solar TOPBiHiKu7 580W wins this comparison by a clear margin. It leads in efficiency (22.1% vs 22%) and matches or exceeds on warranty (15 vs 15 years). For most residential installations, the Canadian Solar TOPBiHiKu7 580W is the stronger choice.
Key Differences
- • Canadian Solar TOPBiHiKu7 580W is rated at 580W while Seraphim SRP-445-BMA-HV is rated at 445W, a 135W difference.
- • Canadian Solar TOPBiHiKu7 580W achieves 22.1% efficiency vs 22% for the other, a 0.1 percentage point gap.
- • Both carry matching 15-year product warranties.
- • Canadian Solar TOPBiHiKu7 580W uses TOPCon N-type Bifacial cells while Seraphim SRP-445-BMA-HV uses TOPCon N-type cells, representing different technology generations.
Specifications Breakdown
Module Efficiency
The Canadian Solar TOPBiHiKu7 580W achieves 22.1% module efficiency compared to Seraphim SRP-445-BMA-HV's 22%, meaning Canadian Solar TOPBiHiKu7 580W converts 0.1 percentage points more sunlight into electricity per square meter. In practical terms, the Canadian Solar TOPBiHiKu7 580W produces 224.5 watts per square meter of panel area while the Seraphim SRP-445-BMA-HV produces 227.9 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 Canadian Solar TOPBiHiKu7 580W delivers 580W per panel versus 445W for the Seraphim SRP-445-BMA-HV, a 135W difference per module. To build an 8 kW residential system, you would need 14 Canadian Solar TOPBiHiKu7 580W panels or 18 Seraphim SRP-445-BMA-HV panels. Choosing the higher-wattage option saves 4 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
Both panels share an identical temperature coefficient of -0.29%/°C, meaning they lose power at the same rate as cell temperature rises above the 25°C standard test baseline. At 65°C cell temperature, both retain 94.2% of rated power. Neither panel has a thermal performance advantage, which makes this specification a non-factor in the comparison.
Warranty Coverage
The Canadian Solar TOPBiHiKu7 580W is backed by a 15-year product warranty and 30-year performance guarantee, while the Seraphim SRP-445-BMA-HV offers 15-year product and 30-year performance coverage. Both offer identical product warranty duration. Based on their published degradation rates (1% first year then 0.4%/year for Canadian Solar TOPBiHiKu7 580W; 1% first year then 0.4%/year for Seraphim SRP-445-BMA-HV), after 25 years the Canadian Solar TOPBiHiKu7 580W should retain approximately 89.4% of original output versus 89.4% for the Seraphim SRP-445-BMA-HV. The end-of-life output levels are closely matched.
Physical Dimensions & Weight
The Canadian Solar TOPBiHiKu7 580W measures 2278×1134×35mm and weighs 28.5 kg, while the Seraphim SRP-445-BMA-HV measures 1722×1134×30mm at 21.5 kg. 2.58 m² of panel area for the Canadian Solar TOPBiHiKu7 580W versus 1.95 m² for the Seraphim SRP-445-BMA-HV. The Seraphim SRP-445-BMA-HV is 7.0 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 140 kg. The more compact Seraphim SRP-445-BMA-HV may be easier to fit on irregularly shaped or space-limited rooftops.
Specification Comparison
| Specification | Canadian Solar TOPBiHiKu7 580W | Seraphim SRP-445-BMA-HV |
|---|---|---|
| Power | 580W | 445W |
| Efficiency | 22.1% | 22% |
| Power Density | 20.9 W/sq ft | 21.2 W/sq ft |
| Cell Type | TOPCon N-type Bifacial | TOPCon N-type |
| Bifacial | Yes | No |
| Weight | 28.5 kg | 21.5 kg |
| Temp Coefficient | -0.29%/°C | -0.29%/°C |
| Snow Load | 5400 Pa | 5400 Pa |
| Wind Load | 2400 Pa | 2400 Pa |
| Product Warranty | 15 years | 15 years |
| Performance Warranty | 30 years | 30 years |
| Degradation (Year 1) | 1% | 1% |
| Annual Degradation | 0.4% | 0.4% |
| Country | China | China |
5-Dimension Head-to-Head Analysis
1. Efficiency & Power Density
Winner: Canadian Solar TOPBiHiKu7 580WThe Canadian Solar TOPBiHiKu7 580W achieves 22.1% efficiency versus 22% — a 0.1 percentage point advantage. On a typical 30-panel residential roof, this translates to approximately 4.0 kW more total system capacity, or 19 kWh more annual production in an average US location.
2. Hot Climate Performance
Winner: TieBoth panels share a temperature coefficient of -0.29%/°C — identical heat tolerance.
3. Durability & Warranty
Winner: TieBoth panels offer identical 15-year product warranties and 0.4% annual degradation. Neither has a durability advantage.
4. Power Output
Winner: Canadian Solar TOPBiHiKu7 580WThe Canadian Solar TOPBiHiKu7 580W delivers 580W versus 445W per panel — 135W more. For an 8 kW system, you need 14 panels with the higher-wattage option versus 18 panels, saving 4 panels and the associated racking and labor costs.
5. Cell Technology
Winner: TieThe Canadian Solar TOPBiHiKu7 580W uses TOPCon N-type Bifacial: 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. The Seraphim SRP-445-BMA-HV 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. Both are equivalent-generation technologies.
Canadian Solar TOPBiHiKu7 580W
Canadian Solar's TOPBiHiKu7 combines N-type TOPCon and bifacial technology for 580W output with excellent rear-side energy gain.
Pros
- + Bifacial design
- + Strong N-type efficiency
- + Good for ground mounts
- + Bankable manufacturer
Cons
- - Requires elevated mounting for bifacial gain
- - Heavy panel
- - Higher cost than PERC
Seraphim SRP-445-BMA-HV
Seraphim SRP-445-BMA-HV is an all-black N-type TOPCon panel delivering 445W with clean aesthetics for residential installations.
Pros
- + All-black aesthetics
- + N-type TOPCon technology
- + Compact residential format
- + Competitive pricing
Cons
- - Less known in US market
- - Limited installer base
- - Standard warranty
Choose Canadian Solar TOPBiHiKu7 580W 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 prefer newer cell technology with a longer performance improvement runway
- ✓ Ground-mount installations that can benefit from bifacial energy production.
Choose Seraphim SRP-445-BMA-HV If...
- ✓ You prefer newer cell technology with a longer performance improvement runway
- ✓ Aesthetics-focused homeowners wanting all-black N-type panels at a good price.
Our Recommendation
We recommend the Canadian Solar TOPBiHiKu7 580W for most buyers in this comparison. It wins 2 of 5 key dimensions and offers a clear advantage in the metrics that matter most for a solar panel purchase. The Seraphim SRP-445-BMA-HV remains a good product, but the Canadian Solar TOPBiHiKu7 580W delivers better overall value for the majority of installations.
Frequently Asked Questions
Which is better, Canadian Solar TOPBiHiKu7 580W or Seraphim SRP-445-BMA-HV?
The Canadian Solar TOPBiHiKu7 580W wins this comparison by a clear margin. It leads in efficiency (22.1% vs 22%) and matches or exceeds on warranty (15 vs 15 years). For most residential installations, the Canadian Solar TOPBiHiKu7 580W is the stronger choice.
Which panel is more efficient, Canadian Solar TOPBiHiKu7 580W or Seraphim SRP-445-BMA-HV?
The Canadian Solar TOPBiHiKu7 580W 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 0.1 percentage points translates to approximately 135W per panel under standard test conditions.
Which has a better warranty, Canadian Solar TOPBiHiKu7 580W or Seraphim SRP-445-BMA-HV?
The Canadian Solar TOPBiHiKu7 580W comes with a 15-year product warranty and 30-year performance guarantee. The Seraphim SRP-445-BMA-HV offers 15-year product and 30-year performance warranties. Both offer identical warranty terms.
Which panel performs better in hot weather?
The Canadian Solar TOPBiHiKu7 580W has a temperature coefficient of -0.29%/°C and the Seraphim SRP-445-BMA-HV is -0.29%/°C. Both handle heat equally. A lower (less negative) temperature coefficient is better.
How many Canadian Solar TOPBiHiKu7 580W vs Seraphim SRP-445-BMA-HV panels do I need for an 8 kW system?
For an 8 kW system: you need 14 Canadian Solar TOPBiHiKu7 580W panels (580W each) or 18 Seraphim SRP-445-BMA-HV panels (445W each). The Canadian Solar TOPBiHiKu7 580W requires fewer panels, saving on racking hardware and installation labor.
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Last updated: February 2026