Just Solar JST-FCMH-730W-HD vs Just Solar JST-EBMH-555W-D
VS
The verdict
FCMH-730W-HD leads on the differences that matter
The largest is module efficiency: 1.80 pp more efficient. 4 of 19 comparable parameters are identical.
See all 15 differencesHow alike are they
4
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
15 of 19 parameters
What actually differs
Parameter
FCMH-730W-HD
EBMH-555W-D
Difference
Module efficiency
23.50 %
21.70 %
1.80 pp more efficient
Temperature coefficient
-0.260 %/°C
-0.360 %/°C
0.100 %/°C better in heat
Rated power
730 Wp
555 Wp
175 W more power
Power density
235.0 Wp/m²
214.8 Wp/m²
20.3 Wp/m² higher
Annual degradation
0.30 %/yr
0.59 %/yr
0.29 %/yr slower
Weight
38.3 kg
29.0 kg
9.3 kg lighter
Short-circuit current
17.33 A
14.05 A
3.28 A apart
Module area
3.106 m²
2.584 m²
0.522 m² apart
Cell technology
HJT
TOPCon
HJT vs TOPCon
Current at max power
16.46 A
13.28 A
3.18 A apart
Cell count
132
144
12 cells apart
Open-circuit voltage
51.51 V
50.00 V
1.51 V apart
Bifacial
Yes
No
Yes vs No
Voltage at max power
44.35 V
41.80 V
2.55 V apart
Dimensions
2384x1303x33 mm
2279x1134x35 mm
2384x1303x33 mm vs 2279x1134x35 mm
02
What it means on a roof
Thirty years of production
Each panel's own declared degradation curve, at 1,200 kWh/kWp a year
FCMH-730W-HD
24,874 kWh
EBMH-555W-D
17,671 kWh
Lifetime gap
7,203 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
FCMH-730W-HD
EBMH-555W-D
Standard test conditions
25 °C
100.0% of rated power
730 W
555 W
Cool, bright day
40 °C
94.6% of rated power
702 W
525 W
Typical summer roof
55 °C
89.2% of rated power
673 W
495 W
Hot roof
70 °C
83.8% of rated power
645 W
465 W
03
Full specification
Parameter
FCMH-730W-HD
EBMH-555W-D
Difference
Power and efficiency
Rated power
730 Wp
555 Wp
+175 W for FCMH-730W-HD
Module efficiency
23.50 %
21.70 %
+1.80 pp for FCMH-730W-HD
Power density
235.0 Wp/m²
214.8 Wp/m²
+20.3 Wp/m² for FCMH-730W-HD
Open-circuit voltage
51.51 V
50.00 V
1.51 V apart
Voltage at max power
44.35 V
41.80 V
2.55 V apart
Short-circuit current
17.33 A
14.05 A
3.28 A apart
Current at max power
16.46 A
13.28 A
3.18 A apart
Temperature
Temperature coefficient
-0.260 %/°C
-0.360 %/°C
+0.100 %/°C for FCMH-730W-HD
Mechanical
Dimensions
2384x1303x33 mm
2279x1134x35 mm
2384x1303x33 mm vs 2279x1134x35 mm
Module area
3.106 m²
2.584 m²
0.522 m² apart
Weight
38.3 kg
29.0 kg
-9.3 kg for EBMH-555W-D
Weight per kWp
52.5 kg/kWp
52.3 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.30 %/yr
0.59 %/yr
-0.29 %/yr for FCMH-730W-HD
Technology
Cell technology
HJT
TOPCon
HJT vs TOPCon
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
144
12 cells apart
Bifacial
Yes
No
Yes vs No
04
14,005 panels
Against the whole database
Efficiency
#716
vs
#7,421
FCMH-730W-HD leads by 6,705 places
Power density
#800
vs
#8,148
FCMH-730W-HD leads by 7,348 places
Heat behaviour
#511
vs
#12,345
FCMH-730W-HD leads by 11,834 places
Weight
#5,993
vs
#5,708
EBMH-555W-D leads by 285 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#199
vs
#5,588
FCMH-730W-HD leads by 5,389 places
05
Open the full database
More useful comparisons
Same series, other bin
Just Solar
Just Solar JST-FCMH-730W-HD vs Just Solar JST-FCMH-740W-HD
3 differences, the largest is module efficiency
Same series, other bin
Just Solar
Just Solar JST-FCMH-730W-HD vs Just Solar JST-FCMH-735W-HD
The same specification on paper
Same series, other bin
Just Solar
Just Solar JST-FCMH-730W-HD vs Just Solar JST-FCMH-725W-HD
The same specification on paper
Same series, other bin
Just Solar
Just Solar JST-FCMH-730W-HD vs Just Solar JST-FCMH-720W-HD
3 differences, the largest is module efficiency
Same series, other bin
Just Solar
Just Solar JST-FCMH-730W-HD vs Just Solar JST-FCMH-715W-HD
3 differences, the largest is module efficiency
Same series, other bin
Just Solar
Just Solar JST-FCMH-730W-HD vs Just Solar JST-FCMH-710W-HD
3 differences, the largest is module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Just Solar JST-FCMH-730W-HD or Just Solar JST-EBMH-555W-D?
According to our database: Just Solar JST-FCMH-730 W-HD has higher module efficiency (23.50% vs 21.70%); Just Solar JST-FCMH-730 W-HD tolerates heat better (temp coeff -0.260%/°C vs -0.360%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Just Solar JST-FCMH-730W-HD and Just Solar JST-EBMH-555W-D?
Just Solar JST-FCMH-730 W-HD has a module efficiency of 23.50%, while Just Solar JST-EBMH-555 W-D is 21.70%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Just Solar JST-FCMH-730W-HD use vs Just Solar JST-EBMH-555W-D?
Just Solar JST-FCMH-730 W-HD uses HJT cells; Just Solar JST-EBMH-555 W-D 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-FCMH-730W-HD and Just Solar JST-EBMH-555W-D?
Just Solar JST-FCMH-730 W-HD has a 30 years power warranty; Just Solar JST-EBMH-555 W-D 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 Just Solar JST-FCMH-730W-HD and Just Solar JST-EBMH-555W-D bifacial panels?
Just Solar JST-FCMH-730 W-HD is bifacial (captures light from both faces); Just Solar JST-EBMH-555 W-D is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Shop prices: See 1 Just Solar offer
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.