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DM590M10T-B72HSW vs DM650M10T-B78HSW 9 of 19 identical Swap Change panels

DMEGC DM590M10T-B72HSW vs DMEGC DM650M10T-B78HSW

DMEGC DM590M10T-B72HSW
DM590M10T-B72HSW
590 Wp 22.80 % TOPCon Bifacial
Open panel page Datasheet PDF
VS
DMEGC DM650M10T-B78HSW
DM650M10T-B78HSW
650 Wp 23.30 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

DM650M10T-B78HSW leads on the differences that matter

The largest is rated power: 60 W more power. 9 of 19 comparable parameters are identical.

See all 10 differences
How alike are they
9 of 19 comparable
parameters are identical
identical differs
01

What actually differs

10 of 19 parameters
Parameter DM590M10T-B72HSW DM650M10T-B78HSW Difference
Rated power 590 Wp 650 Wp 60 W more power
Module efficiency 22.80 % 23.30 % 0.50 pp more efficient
Open-circuit voltage 52.90 V 58.10 V 5.20 V apart
Module area 2.583 m² 2.795 m² 0.212 m² apart
Power density 228.4 Wp/m² 232.5 Wp/m² 4.1 Wp/m² higher
Weight 31.8 kg 33.5 kg 1.7 kg lighter
Voltage at max power 44.23 V 48.24 V 4.01 V apart
Cell count 144 156 12 cells apart
Weight per kWp 53.9 kg/kWp 51.5 kg/kWp 2.4 kg/kWp lighter
Dimensions 2278x1134x30 mm 2465x1134x30 mm 2278x1134x30 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.
DM590M10T-B72HSW
19,796 kWh
DM650M10T-B78HSW
21,809 kWh
Lifetime gap
2,013 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario DM590M10T-B72HSW DM650M10T-B78HSW
Standard test conditions 25 °C 100.0% of rated power 590 W 650 W
Cool, bright day 40 °C 95.7% of rated power 564 W 622 W
Typical summer roof 55 °C 91.3% of rated power 539 W 593 W
Hot roof 70 °C 87.0% of rated power 513 W 565 W
03

Full specification

Parameter DM590M10T-B72HSW DM650M10T-B78HSW Difference
Power and efficiency
Rated power 590 Wp 650 Wp +60 W for DM650M10T-B78HSW
Module efficiency 22.80 % 23.30 % +0.50 pp for DM650M10T-B78HSW
Power density 228.4 Wp/m² 232.5 Wp/m² +4.1 Wp/m² for DM650M10T-B78HSW
Open-circuit voltage 52.90 V 58.10 V 5.20 V apart
Voltage at max power 44.23 V 48.24 V 4.01 V apart
Short-circuit current 14.11 A 14.24 A Effectively the same
Current at max power 13.36 A 13.49 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2278x1134x30 mm 2465x1134x30 mm 2278x1134x30 mm vs 2465x1134x30 mm
Module area 2.583 m² 2.795 m² 0.212 m² apart
Weight 31.8 kg 33.5 kg -1.7 kg for DM590M10T-B72HSW
Weight per kWp 53.9 kg/kWp 51.5 kg/kWp -2.4 kg/kWp for DM650M10T-B78HSW
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 TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 144 156 12 cells apart
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#2,714 vs #1,017
DM650M10T-B78HSW leads by 1,697 places
Power density
#2,598 vs #1,222
DM650M10T-B78HSW leads by 1,376 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#8,021 vs #4,914
DM650M10T-B78HSW leads by 3,107 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,167 vs #1,311
DM650M10T-B78HSW leads by 1,856 places
05

More useful comparisons

Open the full database
Same series, other bin
DMEGC DM590M10T-B72HSW vs DMEGC DM645M10T-B78HSW
8 differences, the largest is rated power
Same series, other bin
DMEGC DM590M10T-B72HSW vs DMEGC DM640M10T-B78HSW
7 differences, the largest is rated power
Same series, other bin
DMEGC DM590M10T-B72HSW vs DMEGC DM635M10T-B78HSW
7 differences, the largest is rated power
Same series, other bin
DMEGC DM590M10T-B72HSW vs DMEGC DM630M10T-B78HSW
9 differences, the largest is rated power
Same series, other bin
DMEGC DM590M10T-B72HSW vs DMEGC DM600M10T-B72HSW
3 differences, the largest is module efficiency
Same series, other bin
DMEGC DM590M10T-B72HSW vs DMEGC DM595M10T-B72HSW
One difference: module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: DMEGC DM590M10T-B72HSW or DMEGC DM650M10T-B78HSW?
According to our database: DMEGC DM650M10T-B78HSW has higher module efficiency (23.30% vs 22.80%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of DMEGC DM590M10T-B72HSW and DMEGC DM650M10T-B78HSW?
DMEGC DM590M10T-B72HSW has a module efficiency of 22.80%, while DMEGC DM650M10T-B78HSW is 23.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does DMEGC DM590M10T-B72HSW use vs DMEGC DM650M10T-B78HSW?
DMEGC DM590M10T-B72HSW uses TOPCon cells; DMEGC DM650M10T-B78HSW 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 DMEGC DM590M10T-B72HSW and DMEGC DM650M10T-B78HSW?
DMEGC DM590M10T-B72HSW has a 30 years power warranty; DMEGC DM650M10T-B78HSW 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 DMEGC DM590M10T-B72HSW and DMEGC DM650M10T-B78HSW bifacial panels?
Both DMEGC DM590M10T-B72HSW and DMEGC DM650M10T-B78HSW 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 82 DMEGC offers

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.