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RS8V-M-DG-440 vs RS8V-M-DG 19 of 19 identical Swap Change panels

Resun Solar RS8V-M-DG-440 vs Resun Solar RS8V-M-DG

Resun Solar RS8V-M-DG-440
Resun Solar
RS8V-M-DG-440
440 Wp 22.53 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
Resun Solar RS8V-M-DG
Resun Solar
RS8V-M-DG
440 Wp 22.53 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

Identical on every published parameter

All 19 comparable parameters agree. Two records this alike are usually one panel sold under two names, or two bins of the same production line - decide on price and on who you would rather buy from.

How alike are they
19 of 19 comparable
parameters are identical
identical differs
01

What actually differs

0 of 19 parameters

Every comparable parameter agrees. The full specification is below.

02

What it means on a roof

Thirty years of production
Declared annual degradation, with a 1.0% first-year loss assumed for both panels because at least one datasheet omits it, at 1,200 kWh/kWp a year
Same temp coeff. for both panels (-0.300 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
RS8V-M-DG-440
14,533 kWh
RS8V-M-DG
14,533 kWh
Lifetime gap
No difference
Output when it is hot
Rated power carried across the range a module actually sees
Scenario RS8V-M-DG-440 RS8V-M-DG
Standard test conditions 25 °C 100.0% of rated power 440 W 440 W
Cool, bright day 40 °C 95.5% of rated power 420 W 420 W
Typical summer roof 55 °C 91.0% of rated power 400 W 400 W
Hot roof 70 °C 86.5% of rated power 381 W 381 W
03

Full specification

Parameter RS8V-M-DG-440 RS8V-M-DG Difference
Power and efficiency
Rated power 440 Wp 440 Wp Same
Module efficiency 22.53 % 22.53 % Same
Power density 225.3 Wp/m² 225.3 Wp/m² Same
Open-circuit voltage 38.90 V 38.10 V Effectively the same
Voltage at max power 32.45 V 32.41 V Effectively the same
Short-circuit current 14.36 A 14.43 A Effectively the same
Current at max power 13.56 A 13.58 A Effectively the same
Temperature
Temperature coefficient -0.300 %/°C -0.300 %/°C Same
Mechanical
Dimensions 1722x1134x30 mm 1722x1134x30 mm Same
Module area 1.953 m² 1.953 m² Same
Weight 23.8 kg 23.8 kg Same
Weight per kWp 54.1 kg/kWp 54.1 kg/kWp Same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.50 %/yr 0.50 %/yr Same
Technology
Cell technology TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 108 108 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#3,982 vs #3,982
Tied - the same position in the database
Power density
#4,099 vs #4,099
Tied - the same position in the database
Heat behaviour
#6,093 vs #6,093
Tied - the same position in the database
Weight
#8,316 vs #8,316
Tied - the same position in the database
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#8,801 vs #8,801
Tied - the same position in the database
05

More useful comparisons

Open the full database
Same series, other bin
Resun Solar
Resun Solar RS8V-M-DG-440 vs Resun Solar RS8V-M-DG-435
One difference: module efficiency
Same series, other bin
Resun Solar
Resun Solar RS8V-M-DG-440 vs Resun Solar RS8V-M-DG-430
3 differences, the largest is module efficiency
Same series, other bin
Resun Solar
Resun Solar RS8V-M-DG-440 vs Resun Solar RS8V-M-DG-425
3 differences, the largest is module efficiency
Same series, other bin
Resun Solar
Resun Solar RS8V-M-DG-440 vs Resun Solar RS8V-M-DG-420
4 differences, the largest is module efficiency
Same series, other bin
Resun Solar
Resun Solar RS8V-M-DG-440 vs Resun Solar RS8V-M-DG-415
4 differences, the largest is module efficiency
Same manufacturer
Resun Solar
Resun Solar RS8V-M-DG-440 vs Resun Solar RS9H-M TOPCON-735
13 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Resun Solar RS8V-M-DG-440 or Resun Solar RS8V-M-DG?
According to our database: both panels are closely matched on key specs - the decision often comes down to price and local availability. See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Resun Solar RS8V-M-DG-440 and Resun Solar RS8V-M-DG?
Resun Solar RS8V-M-DG-440 has a module efficiency of 22.53%, while Resun Solar RS8V-M-DG is 22.53%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Resun Solar RS8V-M-DG-440 use vs Resun Solar RS8V-M-DG?
Resun Solar RS8V-M-DG-440 uses TOPCon cells; Resun Solar RS8V-M-DG uses TOPCon. 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 Resun Solar RS8V-M-DG-440 and Resun Solar RS8V-M-DG?
Resun Solar RS8V-M-DG-440 has a 30 years power warranty; Resun Solar RS8V-M-DG 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 Resun Solar RS8V-M-DG-440 and Resun Solar RS8V-M-DG bifacial panels?
Both Resun Solar RS8V-M-DG-440 and Resun Solar RS8V-M-DG 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.

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.