Skip to main content
RS9-715NBG-E1 vs RS7-635N-E2 6 of 19 identical Swap Change panels

Renesola RS9-715NBG-E1 vs Renesola RS7-635N-E2

Renesola
RS9-715NBG-E1
715 Wp 23.02 % N-type Bifacial
Open panel page Datasheet PDF
VS
Renesola RS7-635N-E2
Renesola
RS7-635N-E2
635 Wp 22.72 % N-type
Open panel page Datasheet PDF
The verdict

13 differences, and they point both ways

The largest is rated power: 80 W more power. 6 of 19 comparable parameters are identical.

See all 13 differences
How alike are they
6 of 19 comparable
parameters are identical
identical differs
01

What actually differs

13 of 19 parameters
Parameter RS9-715NBG-E1 RS7-635N-E2 Difference
Rated power 715 Wp 635 Wp 80 W more power
Weight 38.7 kg 30.0 kg 8.7 kg lighter
Weight per kWp 54.1 kg/kWp 47.2 kg/kWp 6.9 kg/kWp lighter
Open-circuit voltage 49.20 V 57.25 V 8.05 V apart
Short-circuit current 18.44 A 14.04 A 4.40 A apart
Module area 3.106 m² 2.795 m² 0.311 m² apart
Module efficiency 23.02 % 22.72 % 0.30 pp more efficient
Power density 230.2 Wp/m² 227.2 Wp/m² 3.0 Wp/m² higher
Voltage at max power 41.10 V 47.46 V 6.36 V apart
Current at max power 17.40 A 13.38 A 4.02 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.
RS9-715NBG-E1
23,990 kWh
RS7-635N-E2
21,306 kWh
Lifetime gap
2,684 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario RS9-715NBG-E1 RS7-635N-E2
Standard test conditions 25 °C 100.0% of rated power 715 W 635 W
Cool, bright day 40 °C 95.7% of rated power 684 W 607 W
Typical summer roof 55 °C 91.3% of rated power 653 W 580 W
Hot roof 70 °C 87.0% of rated power 622 W 552 W
03

Full specification

Parameter RS9-715NBG-E1 RS7-635N-E2 Difference
Power and efficiency
Rated power 715 Wp 635 Wp +80 W for RS9-715NBG-E1
Module efficiency 23.02 % 22.72 % +0.30 pp for RS9-715NBG-E1
Power density 230.2 Wp/m² 227.2 Wp/m² +3.0 Wp/m² for RS9-715NBG-E1
Open-circuit voltage 49.20 V 57.25 V 8.05 V apart
Voltage at max power 41.10 V 47.46 V 6.36 V apart
Short-circuit current 18.44 A 14.04 A 4.40 A apart
Current at max power 17.40 A 13.38 A 4.02 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 54.1 kg/kWp 47.2 kg/kWp -6.9 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

Against the whole database

14,005 panels
Efficiency
#1,797 vs #3,245
RS9-715NBG-E1 leads by 1,448 places
Power density
#2,018 vs #3,252
RS9-715NBG-E1 leads by 1,234 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#8,339 vs #1,596
RS7-635N-E2 leads by 6,743 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#471 vs #1,866
RS9-715NBG-E1 leads by 1,395 places
05

More useful comparisons

Open the full database
Same series, other bin
Renesola
Renesola RS9-715NBG-E1 vs Renesola RS9-720NBG-E1
The same specification on paper
Same series, other bin
Renesola
Renesola RS9-715NBG-E1 vs Renesola RS9-710NBG-E1
The same specification on paper
Same series, other bin
Renesola
Renesola RS9-715NBG-E1 vs Renesola RS9-705NBG-E1
3 differences, the largest is module efficiency
Same series, other bin
Renesola
Renesola RS9-715NBG-E1 vs Renesola RS9-700NBG-E1
3 differences, the largest is module efficiency
Same series, other bin
Renesola
Renesola RS7-635N-E2 vs Renesola RS7-630N-E2
The same specification on paper
Same series, other bin
Renesola
Renesola RS7-635N-E2 vs Renesola RS7-625N-E2
3 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Renesola RS9-715NBG-E1 or Renesola RS7-635N-E2?
According to our database: Renesola RS9-715NBG-E1 has higher module efficiency (23.02% vs 22.72%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Renesola RS9-715NBG-E1 and Renesola RS7-635N-E2?
Renesola RS9-715NBG-E1 has a module efficiency of 23.02%, 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 RS9-715NBG-E1 use vs Renesola RS7-635N-E2?
Renesola RS9-715NBG-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 RS9-715NBG-E1 and Renesola RS7-635N-E2?
Renesola RS9-715NBG-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 RS9-715NBG-E1 and Renesola RS7-635N-E2 bifacial panels?
Renesola RS9-715NBG-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.