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490NBG-E1 vs 500NBG-E1 16 of 19 identical Swap Change panels

Renesola RS4-490NBG-E1 vs Renesola RS4-500NBG-E1

Renesola
RS4-490NBG-E1
490 Wp 22.71 % N-type Bifacial
Open panel page Datasheet PDF
VS
Renesola
RS4-500NBG-E1
500 Wp 23.17 % N-type Bifacial
Open panel page Datasheet PDF
The verdict

500NBG-E1 leads on the differences that matter

The largest is module efficiency: 0.46 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 490NBG-E1 500NBG-E1 Difference
Module efficiency 22.71 % 23.17 % 0.46 pp more efficient
Power density 227.1 Wp/m² 231.7 Wp/m² 4.6 Wp/m² higher
Rated power 490 Wp 500 Wp 10 W more power
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.
490NBG-E1
16,440 kWh
500NBG-E1
16,776 kWh
Lifetime gap
336 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 490NBG-E1 500NBG-E1
Standard test conditions 25 °C 100.0% of rated power 490 W 500 W
Cool, bright day 40 °C 95.7% of rated power 469 W 478 W
Typical summer roof 55 °C 91.3% of rated power 447 W 457 W
Hot roof 70 °C 87.0% of rated power 426 W 435 W
03

Full specification

Parameter 490NBG-E1 500NBG-E1 Difference
Power and efficiency
Rated power 490 Wp 500 Wp +10 W for 500NBG-E1
Module efficiency 22.71 % 23.17 % +0.46 pp for 500NBG-E1
Power density 227.1 Wp/m² 231.7 Wp/m² +4.6 Wp/m² for 500NBG-E1
Open-circuit voltage 44.78 V 45.18 V Effectively the same
Voltage at max power 36.81 V 37.17 V Effectively the same
Short-circuit current 13.85 A 14.01 A Effectively the same
Current at max power 13.31 A 13.45 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1903x1134x30 mm 1903x1134x30 mm Same
Module area 2.158 m² 2.158 m² Same
Weight 28.0 kg 28.0 kg Same
Weight per kWp 57.1 kg/kWp 56.0 kg/kWp Effectively the same
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 120 120 Same
Bifacial Yes Yes Same
04

Against the whole database

14,129 panels
Efficiency
#3,342 vs #1,518
500NBG-E1 leads by 1,824 places
Power density
#3,396 vs #1,507
500NBG-E1 leads by 1,889 places
Heat behaviour
#2,220 vs #2,220
Tied - the same position in the database
Weight
#11,169 vs #10,402
500NBG-E1 leads by 767 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#6,871 vs #5,907
500NBG-E1 leads by 964 places
05

More useful comparisons

Open the full database
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Renesola RS4-490NBG-E1 vs Renesola RS4-495NBG-E1
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Renesola RS4-490NBG-E1 vs Renesola RS4-485NBG-E1
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Renesola RS4-490NBG-E1 vs Renesola RS4-480NBG-E1
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Renesola RS4-490NBG-E1 vs Renesola RS9-720NBG-E1
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Renesola RS4-490NBG-E1 vs Renesola RS9-715NBG-E1
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Renesola RS4-490NBG-E1 vs Renesola RS9-710NBG-E1
10 differences, the largest is rated power
06

Written summary

07

Questions about this pairing

Which panel is better: Renesola RS4-490NBG-E1 or Renesola RS4-500NBG-E1?
According to our database: Renesola RS4-500NBG-E1 has higher module efficiency (23.17% 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 RS4-500NBG-E1?
Renesola RS4-490NBG-E1 has a module efficiency of 22.71%, while Renesola RS4-500NBG-E1 is 23.17%. 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 RS4-500NBG-E1?
Renesola RS4-490NBG-E1 uses N-type cells; Renesola RS4-500NBG-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 RS4-500NBG-E1?
Renesola RS4-490NBG-E1 has a 30 years power warranty; Renesola RS4-500NBG-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 RS4-500NBG-E1 bifacial panels?
Both Renesola RS4-490NBG-E1 and Renesola RS4-500NBG-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.