Bisol BDO 440 vs Bisol BGO 580
VS
The verdict
BGO 580 leads on the differences that matter
The largest is module efficiency: 1.50 pp more efficient. 8 of 19 comparable parameters are identical.
See all 11 differencesHow alike are they
8
of 19 comparable
parameters are identical
parameters are identical
identical
differs
01
11 of 19 parameters
What actually differs
Parameter
BDO 440
BGO 580
Difference
Module efficiency
22.00 %
23.50 %
1.50 pp more efficient
Rated power
440 Wp
580 Wp
140 W more power
Power density
220.2 Wp/m²
234.9 Wp/m²
14.7 Wp/m² higher
Weight
21.0 kg
26.0 kg
5.0 kg lighter
Open-circuit voltage
34.90 V
45.20 V
10.30 V apart
Module area
1.998 m²
2.469 m²
0.471 m² apart
Cell technology
PERC
TOPCon
PERC vs TOPCon
Weight per kWp
47.7 kg/kWp
44.8 kg/kWp
2.9 kg/kWp lighter
Voltage at max power
29.30 V
37.70 V
8.40 V apart
Cell count
96
120
24 cells apart
Dimensions
1762x1134x30 mm
2177x1134x35 mm
1762x1134x30 mm vs 2177x1134x35 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.
BDO 440
14,970 kWh
BGO 580
19,733 kWh
Lifetime gap
4,763 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario
BDO 440
BGO 580
Standard test conditions
25 °C
100.0% of rated power
440 W
580 W
Cool, bright day
40 °C
95.7% of rated power
421 W
555 W
Typical summer roof
55 °C
91.3% of rated power
402 W
530 W
Hot roof
70 °C
87.0% of rated power
383 W
504 W
03
Full specification
Parameter
BDO 440
BGO 580
Difference
Power and efficiency
Rated power
440 Wp
580 Wp
+140 W for BGO 580
Module efficiency
22.00 %
23.50 %
+1.50 pp for BGO 580
Power density
220.2 Wp/m²
234.9 Wp/m²
+14.7 Wp/m² for BGO 580
Open-circuit voltage
34.90 V
45.20 V
10.30 V apart
Voltage at max power
29.30 V
37.70 V
8.40 V apart
Short-circuit current
16.00 A
16.20 A
Effectively the same
Current at max power
15.00 A
15.40 A
Effectively the same
Temperature
Temperature coefficient
-0.290 %/°C
-0.290 %/°C
Same
Mechanical
Dimensions
1762x1134x30 mm
2177x1134x35 mm
1762x1134x30 mm vs 2177x1134x35 mm
Module area
1.998 m²
2.469 m²
0.471 m² apart
Weight
21.0 kg
26.0 kg
-5.0 kg for BDO 440
Weight per kWp
47.7 kg/kWp
44.8 kg/kWp
-2.9 kg/kWp for BGO 580
Warranty and degradation
Product warranty
25 yrs
25 yrs
Same
Performance warranty
30 yrs
30 yrs
Same
Annual degradation
0.31 %/yr
0.31 %/yr
Same
Technology
Cell technology
PERC
TOPCon
PERC vs TOPCon
Cell type
Monocrystalline
Monocrystalline
Same
Cell count
96
120
24 cells apart
Bifacial
No
No
Same
04
14,005 panels
Against the whole database
Efficiency
#6,517
vs
#716
BGO 580 leads by 5,801 places
Power density
#6,328
vs
#848
BGO 580 leads by 5,480 places
Heat behaviour
#2,165
vs
#2,165
Tied - the same position in the database
Weight
#1,829
vs
#542
BGO 580 leads by 1,287 places
Warranty
#21
vs
#21
Tied - the same position in the database
Overall
#7,054
vs
#1,317
BGO 580 leads by 5,737 places
05
Open the full database
More useful comparisons
Same series, other bin
Bisol
Bisol BDO 440 vs Bisol BGO 570
11 differences, the largest is module efficiency
Same series, other bin
Bisol
Bisol BDO 440 vs Bisol BGO 560
10 differences, the largest is module efficiency
Same series, other bin
Bisol
Bisol BDO 440 vs Bisol BBO 520
11 differences, the largest is module efficiency
Same series, other bin
Bisol
Bisol BDO 440 vs Bisol BBO 510
9 differences, the largest is module efficiency
Same series, other bin
Bisol
Bisol BDO 440 vs Bisol BBO 500
9 differences, the largest is rated power
Same series, other bin
Bisol
Bisol BDO 440 vs Bisol BDO 460
6 differences, the largest is module efficiency
06
Written summary
Checking cache...
07
Questions about this pairing
Which panel is better: Bisol BDO 440 or Bisol BGO 580?
According to our database: Bisol BGO 580 has higher module efficiency (23.50% vs 22.00%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Bisol BDO 440 and Bisol BGO 580?
Bisol BDO 440 has a module efficiency of 22.00%, while Bisol BGO 580 is 23.50%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Bisol BDO 440 use vs Bisol BGO 580?
Bisol BDO 440 uses PERC cells; Bisol BGO 580 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 Bisol BDO 440 and Bisol BGO 580?
Bisol BDO 440 has a 30 years power warranty; Bisol BGO 580 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.
Shop prices: See 12 Bisol 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.