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450W-TD vs (445-465)W-TD (455W class) 18 of 19 identical Swap Change panels

Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-(445-465)W-TD (455W class)

Just Solar
JST-EDMH-450W-TD
450 Wp 23.05 % TOPCon
Open panel page Datasheet PDF
VS
Just Solar
JST-EDMH-(445-465)W-TD (455W class)
455 Wp 23.30 % TOPCon
Open panel page Datasheet PDF
The verdict

(445-465)W-TD (455W class) leads on the differences that matter

The largest is module efficiency: 0.25 pp more efficient. 18 of 19 comparable parameters are identical.

See the one difference
How alike are they
18 of 19 comparable
parameters are identical
identical differs
01

What actually differs

1 of 19 parameters
Parameter 450W-TD (445-465)W-TD (455W class) Difference
Module efficiency 23.05 % 23.30 % 0.25 pp more efficient
02

What it means on a roof

Thirty years of production
Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
450W-TD
14,864 kWh
(445-465)W-TD (455W class)
15,029 kWh
Lifetime gap
165 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 450W-TD (445-465)W-TD (455W class)
Standard test conditions 25 °C 100.0% of rated power 450 W 455 W
Cool, bright day 40 °C 95.5% of rated power 430 W 435 W
Typical summer roof 55 °C 91.0% of rated power 410 W 414 W
Hot roof 70 °C 86.5% of rated power 389 W 394 W
03

Full specification

Parameter 450W-TD (445-465)W-TD (455W class) Difference
Power and efficiency
Rated power 450 Wp 455 Wp Effectively the same
Module efficiency 23.05 % 23.30 % +0.25 pp for (445-465)W-TD (455W class)
Power density 230.4 Wp/m² 233.0 Wp/m² Effectively the same
Open-circuit voltage 38.50 V 38.70 V Effectively the same
Voltage at max power 32.90 V 33.10 V Effectively the same
Short-circuit current 14.19 A 14.26 A Effectively the same
Current at max power 13.68 A 13.75 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 1722x1134x30 mm 1722x1134x30 mm Same
Module area 1.953 m² 1.953 m² Same
Weight 20.5 kg 20.5 kg Same
Weight per kWp 45.6 kg/kWp 45.1 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.50 %/yr 0.50 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 108 108 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#1,700 vs #1,017
(445-465)W-TD (455W class) leads by 683 places
Power density
#1,708 vs #1,098
(445-465)W-TD (455W class) leads by 610 places
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#767 vs #607
(445-465)W-TD (455W class) leads by 160 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#7,596 vs #7,080
(445-465)W-TD (455W class) leads by 516 places
05

More useful comparisons

Open the full database
Same series, other bin
Just Solar
Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-(445-465)W-TD (465W class)
3 differences, the largest is module efficiency
Same series, other bin
Just Solar
Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-465W-TD
3 differences, the largest is module efficiency
Same series, other bin
Just Solar
Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-(445-465)W-TD (460W class)
3 differences, the largest is module efficiency
Same series, other bin
Just Solar
Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-460W-TD
3 differences, the largest is module efficiency
Same series, other bin
Just Solar
Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-455W-TD
One difference: module efficiency
Same series, other bin
Just Solar
Just Solar JST-EDMH-450W-TD vs Just Solar JST-EDMH-(445-465)W-TD (450W class)
The same specification on paper
06

Written summary

07

Questions about this pairing

Which panel is better: Just Solar JST-EDMH-450W-TD or Just Solar JST-EDMH-(445-465)W-TD (455W class)?
According to our database: Just Solar JST-EDMH-(445-465)W-TD (455 W class) has higher module efficiency (23.30% vs 23.05%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Just Solar JST-EDMH-450W-TD and Just Solar JST-EDMH-(445-465)W-TD (455W class)?
Just Solar JST-EDMH-450 W-TD has a module efficiency of 23.05%, while Just Solar JST-EDMH-(445-465)W-TD (455 W class) is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Just Solar JST-EDMH-450W-TD use vs Just Solar JST-EDMH-(445-465)W-TD (455W class)?
Just Solar JST-EDMH-450 W-TD uses TOPCon cells; Just Solar JST-EDMH-(445-465)W-TD (455 W class) 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 Just Solar JST-EDMH-450W-TD and Just Solar JST-EDMH-(445-465)W-TD (455W class)?
Just Solar JST-EDMH-450 W-TD has a 30 years power warranty; Just Solar JST-EDMH-(445-465)W-TD (455 W class) 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.

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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.