Canadian Solar TOPHiKu6 455
#9 in 150 W and upFull review
A low-cost all-black panel from a top-tier maker for a home rooftop, especially in snowy areas. Confirm stock before planning around it.
Solar Cellz USA $241.45$241.45
The Canadian Solar TOPHiKu6 455 is the better rigid solar panel overall, rated 4.5 to 4.1. The Canadian Solar TOPHiKu6 455 leads on value. The Canadian Solar TOPHiKu6 455 costs $128.54 less ($241.45 vs $369.99).
Callsun 450W Bifacial Double-Glass
#22 in 150 W and upFull review
A large bifacial panel with a longer warranty than most, for a home rooftop, shed or ground-mount array on a 24 V or 48 V system or a grid-tie inverter. Too big and too high-voltage for most RV and van setups.
Amazon $369.99$369.99
Prices were last checked October 26, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Canadian Solar TOPHiKu6 455 for value ($0.53 per rated watt vs $0.82 per rated watt).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 150 W and up rigid solar panel; a clear win is highlighted. How we rank explains each one.
| Factor weight | Canadian Solar TOPHiKu6 455 | Callsun 450W Bifacial Double-Glass |
|---|---|---|
| Overall rating | 4.5/5 | 4.1/5 |
| Value 45% | 92 $0.53 per rated watt | 65 $0.82 per rated watt |
| Tested output 15% | 50 not yet independently tested (neutral score used) | 50 not yet independently tested (neutral score used) |
| Durability 25% | 100 IP68, 25-year warranty | 100 IP68, 10-year warranty |
| Efficiency 15% | 86 22.3% module efficiency | 90 22.5% module efficiency (from size and rated power) |
Specifications
| Canadian Solar TOPHiKu6 455 | Callsun 450W Bifacial Double-Glass | |
|---|---|---|
| Output | ||
| Rated power | 455 W | 450 W |
| Module efficiency | 22.3% | 22.5% (rated power over panel area) |
| Claimed efficiency | 22.8% ("module efficiency up to 22.8%" (465 W version); the 455 W version is 22.3%) | 25.6% (cell efficiency per Callsun's manual and the Amazon listing; Callsun's product page says 25.4%) |
| Cells | Monocrystalline (N-type TOPCon, 108 half cells) | Monocrystalline (N-type, 16BB, 182 mm cells, wired as two parallel halves for shade tolerance) |
| Bifacial | No | Yes |
| Electrical | ||
| Open-circuit voltage (Voc) | 39.1 V | 35.8 V |
| Voltage at max power (Vmp) | 33.2 V | 29.7 V |
| Short-circuit current (Isc) | 14.6 A | 16 A |
| Current at max power (Imp) | 13.7 A | 15.1 A |
| Voc temperature coefficient | -0.2%/°C | -0.2%/°C |
| Series / parallel | Yes | - |
| Connections | ||
| Output connector | T6, MC4, MC4-EVO2 or MC4-EVO2A | Solar connectors |
| Build | ||
| Weight | 50.7 lb (23 kg) | 52.8 lb (24 kg) |
| Dimensions | 70.9 x 44.6 x 1.38 in | 69.4 x 44.7 x 1.2 in |
| Frame | anodized aluminum alloy, black | anodized aluminum alloy |
| Glass | 3.2 mm tempered, anti-reflective coating | double glass: 2.0 mm AR-coated heat-strengthened front, 2.0 mm heat-strengthened back |
| Junction box rating | IP68 | IP68 |
| Warranty | 25 years | 10 years |
| Output warranty | 30-year linear: no more than 1% loss in year 1, then no more than 0.4% a year | 84.5% output after 25 years |
| Released | - | 2026-07 |