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RS4-490NBG-E1 vs RS9-715NBG-E1 7 of 19 identical Swap Change panels

Renesola RS4-490NBG-E1 vs Renesola RS9-715NBG-E1

Renesola
RS4-490NBG-E1
490 Wp 22.71 % N-type Bifacial
Open panel page Datasheet PDF
VS
Renesola
RS9-715NBG-E1
715 Wp 23.02 % N-type Bifacial
Open panel page Datasheet PDF
The verdict

RS9-715NBG-E1 leads on the differences that matter

The largest is rated power: 225 W more power. 7 of 19 comparable parameters are identical.

See all 12 differences
How alike are they
7 of 19 comparable
parameters are identical
identical differs
01

What actually differs

12 of 19 parameters
Parameter RS4-490NBG-E1 RS9-715NBG-E1 Difference
Rated power 490 Wp 715 Wp 225 W more power
Weight 28.0 kg 38.7 kg 10.7 kg lighter
Open-circuit voltage 44.78 V 49.20 V 4.42 V apart
Short-circuit current 13.85 A 18.44 A 4.59 A apart
Module area 2.158 m² 3.106 m² 0.948 m² apart
Module efficiency 22.71 % 23.02 % 0.31 pp more efficient
Weight per kWp 57.1 kg/kWp 54.1 kg/kWp 3.0 kg/kWp lighter
Power density 227.1 Wp/m² 230.2 Wp/m² 3.1 Wp/m² higher
Voltage at max power 36.81 V 41.10 V 4.29 V apart
Current at max power 13.31 A 17.40 A 4.09 A apart
Cell count 120 132 12 cells apart
Dimensions 1903x1134x30 mm 2384x1303x33 mm 1903x1134x30 mm vs 2384x1303x33 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.
RS4-490NBG-E1
16,440 kWh
RS9-715NBG-E1
23,990 kWh
Lifetime gap
7,550 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario RS4-490NBG-E1 RS9-715NBG-E1
Standard test conditions 25 °C 100.0% of rated power 490 W 715 W
Cool, bright day 40 °C 95.7% of rated power 469 W 684 W
Typical summer roof 55 °C 91.3% of rated power 447 W 653 W
Hot roof 70 °C 87.0% of rated power 426 W 622 W
03

Full specification

Parameter RS4-490NBG-E1 RS9-715NBG-E1 Difference
Power and efficiency
Rated power 490 Wp 715 Wp +225 W for RS9-715NBG-E1
Module efficiency 22.71 % 23.02 % +0.31 pp for RS9-715NBG-E1
Power density 227.1 Wp/m² 230.2 Wp/m² +3.1 Wp/m² for RS9-715NBG-E1
Open-circuit voltage 44.78 V 49.20 V 4.42 V apart
Voltage at max power 36.81 V 41.10 V 4.29 V apart
Short-circuit current 13.85 A 18.44 A 4.59 A apart
Current at max power 13.31 A 17.40 A 4.09 A apart
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1903x1134x30 mm 2384x1303x33 mm 1903x1134x30 mm vs 2384x1303x33 mm
Module area 2.158 m² 3.106 m² 0.948 m² apart
Weight 28.0 kg 38.7 kg -10.7 kg for RS4-490NBG-E1
Weight per kWp 57.1 kg/kWp 54.1 kg/kWp -3.0 kg/kWp for RS9-715NBG-E1
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 120 132 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#3,342 vs #1,847
RS9-715NBG-E1 leads by 1,495 places
Power density
#3,396 vs #2,070
RS9-715NBG-E1 leads by 1,326 places
Heat behaviour
#2,220 vs #2,220
Tied - the same position in the database
Weight
#11,169 vs #8,418
RS9-715NBG-E1 leads by 2,751 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,871 vs #478
RS9-715NBG-E1 leads by 6,393 places
05

More useful comparisons

Open the full database
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06

Written summary

07

Questions about this pairing

Which panel is better: Renesola RS4-490NBG-E1 or Renesola RS9-715NBG-E1?
According to our database: Renesola RS9-715NBG-E1 has higher module efficiency (23.02% vs 22.71%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Renesola RS4-490NBG-E1 and Renesola RS9-715NBG-E1?
Renesola RS4-490NBG-E1 has a module efficiency of 22.71%, while Renesola RS9-715NBG-E1 is 23.02%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Renesola RS4-490NBG-E1 use vs Renesola RS9-715NBG-E1?
Renesola RS4-490NBG-E1 uses N-type cells; Renesola RS9-715NBG-E1 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 RS4-490NBG-E1 and Renesola RS9-715NBG-E1?
Renesola RS4-490NBG-E1 has a 30 years power warranty; Renesola RS9-715NBG-E1 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 RS4-490NBG-E1 and Renesola RS9-715NBG-E1 bifacial panels?
Both Renesola RS4-490NBG-E1 and Renesola RS9-715NBG-E1 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 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.