Sunplus 735 vs Sunplus 740
VS
The verdict
Identical on every published parameter
All 18 comparable parameters agree, with 1 more left out because at least one datasheet does not publish it. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.
How alike are they
18
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
0 of 18 parameters
What actually differs
Every comparable parameter agrees. The full specification is below.
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
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.
735
25,006 kWh
740
25,176 kWh
Lifetime gap
170 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
735
740
Standard test conditions
25 °C
100.0% of rated power
735 W
740 W
Cool, bright day
40 °C
95.5% of rated power
702 W
707 W
Typical summer roof
55 °C
91.0% of rated power
669 W
673 W
Hot roof
70 °C
86.5% of rated power
636 W
640 W
03
Full specification
Parameter
735
740
Difference
Power and efficiency
Rated power
735 Wp
740 Wp
Effectively the same
Module efficiency
23.70 %
23.80 %
Effectively the same
Power density
236.6 Wp/m²
238.2 Wp/m²
Effectively the same
Open-circuit voltage
51.01 V
51.01 V
Same
Voltage at max power
43.71 V
43.78 V
Effectively the same
Short-circuit current
17.68 A
17.70 A
Effectively the same
Current at max power
16.72 A
16.78 A
Effectively the same
Temperature
Temperature coefficient
-0.300 %/°C
-0.300 %/°C
Same
Mechanical
Dimensions
2384x1303x35 mm
2384x1303x35 mm
Same
Module area
3.106 m²
3.106 m²
Same
Weight
39.0 kg
39.0 kg
Same
Weight per kWp
53.1 kg/kWp
52.7 kg/kWp
Effectively the same
Warranty and degradation
Product warranty
-
-
Neither datasheet publishes this
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.31 %/yr
0.31 %/yr
Same
Technology
Cell technology
HJT
HJT
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
156
156
Same
Bifacial
Yes
Yes
Same
04
14,005 panels
Against the whole database
Efficiency
#517
vs
#433
740 leads by 84 places
Power density
#582
vs
#431
740 leads by 151 places
Heat behaviour
#6,093
vs
#6,093
Tied - the same position in the database
Weight
#6,818
vs
#6,344
740 leads by 474 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#1,146
vs
#1,031
740 leads by 115 places
05
Open the full database
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06
Written summary
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07
Questions about this pairing
Which panel is better: Sunplus 735 or Sunplus 740?
According to our database: Sunplus 740 has higher module efficiency (23.80% vs 23.70%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Sunplus 735 and Sunplus 740?
Sunplus 735 has a module efficiency of 23.70%, while Sunplus 740 is 23.80%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Sunplus 735 use vs Sunplus 740?
Sunplus 735 uses HJT cells; Sunplus 740 uses HJT. 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 Sunplus 735 and Sunplus 740?
Sunplus 735 has a 30 years power warranty; Sunplus 740 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 Sunplus 735 and Sunplus 740 bifacial panels?
Both Sunplus 735 and Sunplus 740 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 7 Sunplus 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.