Renesola RS9-710NBG-E1 vs Renesola RS7-635N-E2
VS
The verdict
11 differences, and they point both ways
The largest is rated power: 75 W more power. 8 of 19 comparable parameters are identical.
See all 11 differencesHow alike are they
8
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
11 of 19 parameters
What actually differs
Parameter
RS9-710NBG-E1
RS7-635N-E2
Difference
Rated power
710 Wp
635 Wp
75 W more power
Weight
38.7 kg
30.0 kg
8.7 kg lighter
Weight per kWp
54.5 kg/kWp
47.2 kg/kWp
7.3 kg/kWp lighter
Open-circuit voltage
49.00 V
57.25 V
8.25 V apart
Short-circuit current
18.40 A
14.04 A
4.36 A apart
Module area
3.106 m²
2.795 m²
0.311 m² apart
Voltage at max power
40.90 V
47.46 V
6.56 V apart
Current at max power
17.36 A
13.38 A
3.98 A apart
Cell count
132
156
24 cells apart
Bifacial
Yes
No
Yes vs No
Dimensions
2384x1303x33 mm
2465x1134x30 mm
2384x1303x33 mm vs 2465x1134x30 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
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.
RS9-710NBG-E1
23,822 kWh
RS7-635N-E2
21,306 kWh
Lifetime gap
2,516 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
RS9-710NBG-E1
RS7-635N-E2
Standard test conditions
25 °C
100.0% of rated power
710 W
635 W
Cool, bright day
40 °C
95.7% of rated power
679 W
607 W
Typical summer roof
55 °C
91.3% of rated power
648 W
580 W
Hot roof
70 °C
87.0% of rated power
617 W
552 W
03
Full specification
Parameter
RS9-710NBG-E1
RS7-635N-E2
Difference
Power and efficiency
Rated power
710 Wp
635 Wp
+75 W for RS9-710NBG-E1
Module efficiency
22.86 %
22.72 %
Effectively the same
Power density
228.6 Wp/m²
227.2 Wp/m²
Effectively the same
Open-circuit voltage
49.00 V
57.25 V
8.25 V apart
Voltage at max power
40.90 V
47.46 V
6.56 V apart
Short-circuit current
18.40 A
14.04 A
4.36 A apart
Current at max power
17.36 A
13.38 A
3.98 A apart
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
2384x1303x33 mm
2465x1134x30 mm
2384x1303x33 mm vs 2465x1134x30 mm
Module area
3.106 m²
2.795 m²
0.311 m² apart
Weight
38.7 kg
30.0 kg
-8.7 kg for RS7-635N-E2
Weight per kWp
54.5 kg/kWp
47.2 kg/kWp
-7.3 kg/kWp for RS7-635N-E2
Warranty and degradation
Product warranty
15 yrs
15 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.40 %/yr
0.40 %/yr
Same
Technology
Cell technology
N-type
N-type
Same
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
132
156
24 cells apart
Bifacial
Yes
No
Yes vs No
04
14,005 panels
Against the whole database
Efficiency
#2,536
vs
#3,245
RS9-710NBG-E1 leads by 709 places
Power density
#2,474
vs
#3,252
RS9-710NBG-E1 leads by 778 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#8,842
vs
#1,596
RS7-635N-E2 leads by 7,246 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#618
vs
#1,866
RS9-710NBG-E1 leads by 1,248 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: Renesola RS9-710NBG-E1 or Renesola RS7-635N-E2?
According to our database: Renesola RS9-710NBG-E1 has higher module efficiency (22.86% vs 22.72%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Renesola RS9-710NBG-E1 and Renesola RS7-635N-E2?
Renesola RS9-710NBG-E1 has a module efficiency of 22.86%, while Renesola RS7-635N-E2 is 22.72%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Renesola RS9-710NBG-E1 use vs Renesola RS7-635N-E2?
Renesola RS9-710NBG-E1 uses N-type cells; Renesola RS7-635N-E2 uses N-type. 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 Renesola RS9-710NBG-E1 and Renesola RS7-635N-E2?
Renesola RS9-710NBG-E1 has a 30 years power warranty; Renesola RS7-635N-E2 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 Renesola RS9-710NBG-E1 and Renesola RS7-635N-E2 bifacial panels?
Renesola RS9-710NBG-E1 is bifacial (captures light from both faces); Renesola RS7-635N-E2 is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Shop prices: See 1 Renesola 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.