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445 W vs 450 W 17 of 18 identical Swap Change panels

Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W

Solar-Fabrik
Mono S4 Halfcut Trend Full Black 445 W
445 Wp 22.30 % TOPCon Bifacial Incomplete
Open panel page Datasheet PDF
VS
Solar-Fabrik
Mono S4 Halfcut Trend Full Black 450 W
450 Wp 22.50 % TOPCon Bifacial Incomplete
Open panel page Datasheet PDF
The verdict

450 W leads on the differences that matter

The largest is module efficiency: 0.20 pp more efficient. 17 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See the one difference
How alike are they
17 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

1 of 18 parameters
Parameter 445 W 450 W Difference
Module efficiency 22.30 % 22.50 % 0.20 pp more efficient
02

What it means on a roof

Thirty years of production
A 1.0% first-year loss then 0.40% a year, assumed for both panels, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.290 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
445 W
14,931 kWh
450 W
15,098 kWh
Lifetime gap
167 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 445 W 450 W
Standard test conditions 25 °C 100.0% of rated power 445 W 450 W
Cool, bright day 40 °C 95.7% of rated power 426 W 430 W
Typical summer roof 55 °C 91.3% of rated power 406 W 411 W
Hot roof 70 °C 87.0% of rated power 387 W 391 W
03

Full specification

Parameter 445 W 450 W Difference
Power and efficiency
Rated power 445 Wp 450 Wp Effectively the same
Module efficiency 22.30 % 22.50 % +0.20 pp for 450 W
Power density 222.7 Wp/m² 225.2 Wp/m² Effectively the same
Open-circuit voltage 40.05 V 40.25 V Effectively the same
Voltage at max power 33.71 V 33.91 V Effectively the same
Short-circuit current 14.10 A 14.17 A Effectively the same
Current at max power 13.20 A 13.27 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1762x1134x30 mm 1762x1134x30 mm Same
Module area 1.998 m² 1.998 m² Same
Weight 24.9 kg 24.9 kg Same
Weight per kWp 56.0 kg/kWp 55.3 kg/kWp Effectively the same
Warranty and degradation
Product warranty 30 yrs 30 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation - - Neither datasheet publishes this
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 108 108 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#5,100 vs #4,222
450 W leads by 878 places
Power density
#5,302 vs #4,225
450 W leads by 1,077 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#10,301 vs #9,790
450 W leads by 511 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#5,595 vs #5,200
450 W leads by 395 places
05

More useful comparisons

Open the full database
Same series, other bin
Solar-Fabrik
Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 460W
8 differences, the largest is module efficiency
Same series, other bin
Solar-Fabrik
Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W vs Solar-Fabrik S4-DG460-96TMax (Full Black)
8 differences, the largest is module efficiency
Same series, other bin
Solar-Fabrik
Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W vs Solar-Fabrik S4-DG455-96TMax (Full Black)
8 differences, the largest is module efficiency
Same series, other bin
Solar-Fabrik
Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 455W
8 differences, the largest is module efficiency
Same manufacturer
Solar-Fabrik
Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W vs Solar-Fabrik S4-DG625-132TMax
15 differences, the largest is module efficiency
Same manufacturer
Solar-Fabrik
Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W vs Solar-Fabrik S4-DG620-132TMax
14 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W or Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W?
According to our database: Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W has higher module efficiency (22.50% vs 22.30%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W and Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W?
Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W has a module efficiency of 22.30%, while Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W is 22.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W use vs Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W?
Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W uses TOPCon cells; Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W uses TOPCon. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.
What is the warranty on Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W and Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W?
Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W has a 30 years power warranty; Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W has a 30 years power warranty. The power warranty guarantees a minimum percentage of rated output at the end of the warranty period (typically 80-87%). Product (materials) warranties are usually shorter.
Are Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W and Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W bifacial panels?
Both Solar-Fabrik Mono S4 Halfcut Trend Full Black 445 W and Solar-Fabrik Mono S4 Halfcut Trend Full Black 450 W are bifacial - they capture reflected light from the ground, which can add 5-15% more annual energy on ground-mount or elevated rooftop installations with a light surface beneath.

Shop prices: See 19 Solar-Fabrik offers

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate. The thirty-year projection and the temperature scenarios are calculations from those figures, and each states its assumption above.