Renesola RS9-715NBG-E1 vs Renesola RS7-615N-E2
VS
The verdict
RS9-715NBG-E1 leads on the differences that matter
The largest is module efficiency: 1.02 pp more efficient. 6 of 19 comparable parameters are identical.
See all 13 differencesHow alike are they
6
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
13 of 19 parameters
What actually differs
Parameter
RS9-715NBG-E1
RS7-615N-E2
Difference
Module efficiency
23.02 %
22.00 %
1.02 pp more efficient
Rated power
715 Wp
615 Wp
100 W more power
Power density
230.2 Wp/m²
220.0 Wp/m²
10.2 Wp/m² higher
Weight
38.7 kg
30.0 kg
8.7 kg lighter
Weight per kWp
54.1 kg/kWp
48.8 kg/kWp
5.3 kg/kWp lighter
Open-circuit voltage
49.20 V
56.65 V
7.45 V apart
Short-circuit current
18.44 A
13.80 A
4.64 A apart
Module area
3.106 m²
2.795 m²
0.311 m² apart
Voltage at max power
41.10 V
46.81 V
5.71 V apart
Current at max power
17.40 A
13.14 A
4.26 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
RS7-615N-E2
20,634 kWh
Lifetime gap
3,356 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
RS9-715NBG-E1
RS7-615N-E2
Standard test conditions
25 °C
100.0% of rated power
715 W
615 W
Cool, bright day
40 °C
95.7% of rated power
684 W
588 W
Typical summer roof
55 °C
91.3% of rated power
653 W
561 W
Hot roof
70 °C
87.0% of rated power
622 W
535 W
03
Full specification
Parameter
RS9-715NBG-E1
RS7-615N-E2
Difference
Power and efficiency
Rated power
715 Wp
615 Wp
+100 W for RS9-715NBG-E1
Module efficiency
23.02 %
22.00 %
+1.02 pp for RS9-715NBG-E1
Power density
230.2 Wp/m²
220.0 Wp/m²
+10.2 Wp/m² for RS9-715NBG-E1
Open-circuit voltage
49.20 V
56.65 V
7.45 V apart
Voltage at max power
41.10 V
46.81 V
5.71 V apart
Short-circuit current
18.44 A
13.80 A
4.64 A apart
Current at max power
17.40 A
13.14 A
4.26 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 RS7-615N-E2
Weight per kWp
54.1 kg/kWp
48.8 kg/kWp
-5.3 kg/kWp for RS7-615N-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
#1,797
vs
#6,517
RS9-715NBG-E1 leads by 4,720 places
Power density
#2,018
vs
#6,655
RS9-715NBG-E1 leads by 4,637 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#8,339
vs
#2,460
RS7-615N-E2 leads by 5,879 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#471
vs
#3,149
RS9-715NBG-E1 leads by 2,678 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 RS9-715NBG-E1 or Renesola RS7-615N-E2?
According to our database: Renesola RS9-715NBG-E1 has higher module efficiency (23.02% vs 22.00%). 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 RS7-615N-E2?
Renesola RS9-715NBG-E1 has a module efficiency of 23.02%, while Renesola RS7-615N-E2 is 22.00%. 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 RS7-615N-E2?
Renesola RS9-715NBG-E1 uses N-type cells; Renesola RS7-615N-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 RS7-615N-E2?
Renesola RS9-715NBG-E1 has a 30 years power warranty; Renesola RS7-615N-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 RS7-615N-E2 bifacial panels?
Renesola RS9-715NBG-E1 is bifacial (captures light from both faces); Renesola RS7-615N-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.