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745BHDG vs 720BHDG 13 of 19 identical Swap Change panels

Risen RSM132-8-745BHDG vs Risen RSM132-8-720BHDG

Risen RSM132-8-745BHDG
RSM132-8-745BHDG
745 Wp 24.00 % HJT Bifacial
Open panel page Datasheet PDF
VS
RSM132-8-720BHDG
720 Wp 23.20 % HJT Bifacial
Open panel page Datasheet PDF
The verdict

745BHDG leads on the differences that matter

The largest is module efficiency: 0.80 pp more efficient. 13 of 19 comparable parameters are identical.

See all 6 differences
How alike are they
13 of 19 comparable
parameters are identical
identical differs
01

What actually differs

6 of 19 parameters
Parameter 745BHDG 720BHDG Difference
Module efficiency 24.00 % 23.20 % 0.80 pp more efficient
Power density 239.8 Wp/m² 231.8 Wp/m² 8.0 Wp/m² higher
Rated power 745 Wp 720 Wp 25 W more power
Weight per kWp 50.3 kg/kWp 55.6 kg/kWp 5.2 kg/kWp lighter
Weight 37.5 kg 40.0 kg 2.5 kg lighter
Dimensions 2384x1303x33 mm 2384x1303x35 mm 2384x1303x33 mm vs 2384x1303x35 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 (-0.240 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.
745BHDG
25,385 kWh
720BHDG
24,533 kWh
Lifetime gap
852 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 745BHDG 720BHDG
Standard test conditions 25 °C 100.0% of rated power 745 W 720 W
Cool, bright day 40 °C 96.4% of rated power 718 W 694 W
Typical summer roof 55 °C 92.8% of rated power 691 W 668 W
Hot roof 70 °C 89.2% of rated power 665 W 642 W
03

Full specification

Parameter 745BHDG 720BHDG Difference
Power and efficiency
Rated power 745 Wp 720 Wp +25 W for 745BHDG
Module efficiency 24.00 % 23.20 % +0.80 pp for 745BHDG
Power density 239.8 Wp/m² 231.8 Wp/m² +8.0 Wp/m² for 745BHDG
Open-circuit voltage 50.54 V 50.18 V Effectively the same
Voltage at max power 42.38 V 42.08 V Effectively the same
Short-circuit current 18.65 A 18.19 A Effectively the same
Current at max power 17.59 A 17.13 A Effectively the same
Temperature
Temperature coefficient -0.240 %/°C -0.240 %/°C Same
Mechanical
Dimensions 2384x1303x33 mm 2384x1303x35 mm 2384x1303x33 mm vs 2384x1303x35 mm
Module area 3.106 m² 3.106 m² Same
Weight 37.5 kg 40.0 kg -2.5 kg for 745BHDG
Weight per kWp 50.3 kg/kWp 55.6 kg/kWp -5.2 kg/kWp for 745BHDG
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.30 %/yr 0.30 %/yr Same
Technology
Cell technology HJT HJT Same
Cell type Monocrystalline Monocrystalline Same
Cell count 132 132 Same
Bifacial Yes Yes Same
04

Against the whole database

14,005 panels
Efficiency
#303 vs #1,306
745BHDG leads by 1,003 places
Power density
#339 vs #1,347
745BHDG leads by 1,008 places
Heat behaviour
#13 vs #13
Tied - the same position in the database
Weight
#3,718 vs #9,909
745BHDG leads by 6,191 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#98 vs #351
745BHDG leads by 253 places
05

More useful comparisons

Open the full database
Same series, other bin
Risen RSM132-8-745BHDG vs Risen RSM132-8-740BHDG
One difference: module efficiency
Same series, other bin
Risen RSM132-8-745BHDG vs Risen RSM132-8-735BHDG
3 differences, the largest is module efficiency
Same series, other bin
Risen RSM132-8-720BHDG vs Risen RSM132-8-730BHDG
3 differences, the largest is module efficiency
Same series, other bin
Risen RSM132-8-720BHDG vs Risen RSM132-8-725BHDG
The same specification on paper
Same series, other bin
Risen RSM132-8-720BHDG vs Risen RSM132-8-715BHDG
4 differences, the largest is weight
Same series, other bin
Risen RSM132-8-720BHDG vs Risen RSM132-8-710BHDG
6 differences, the largest is weight
06

Written summary

07

Questions about this pairing

Which panel is better: Risen RSM132-8-745BHDG or Risen RSM132-8-720BHDG?
According to our database: Risen RSM132-8-745BHDG has higher module efficiency (24.00% vs 23.20%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Risen RSM132-8-745BHDG and Risen RSM132-8-720BHDG?
Risen RSM132-8-745BHDG has a module efficiency of 24.00%, while Risen RSM132-8-720BHDG is 23.20%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Risen RSM132-8-745BHDG use vs Risen RSM132-8-720BHDG?
Risen RSM132-8-745BHDG uses HJT cells; Risen RSM132-8-720BHDG uses HJT. 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 Risen RSM132-8-745BHDG and Risen RSM132-8-720BHDG?
Risen RSM132-8-745BHDG has a 30 years power warranty; Risen RSM132-8-720BHDG 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 Risen RSM132-8-745BHDG and Risen RSM132-8-720BHDG bifacial panels?
Both Risen RSM132-8-745BHDG and Risen RSM132-8-720BHDG 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 23 Risen 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.