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BBO 520 vs BGO 580 11 of 19 identical Swap Change panels

Bisol BBO 520 vs Bisol BGO 580

Bisol BBO 520
Bisol
BBO 520
520 Wp 23.20 % TOPCon
Open panel page Datasheet PDF
VS
Bisol
BGO 580
580 Wp 23.50 % TOPCon
Open panel page Datasheet PDF
The verdict

BGO 580 leads on the differences that matter

The largest is rated power: 60 W more power. 11 of 19 comparable parameters are identical.

See all 8 differences
How alike are they
11 of 19 comparable
parameters are identical
identical differs
01

What actually differs

8 of 19 parameters
Parameter BBO 520 BGO 580 Difference
Rated power 520 Wp 580 Wp 60 W more power
Open-circuit voltage 40.60 V 45.20 V 4.60 V apart
Module area 2.240 m² 2.469 m² 0.229 m² apart
Module efficiency 23.20 % 23.50 % 0.30 pp more efficient
Weight 23.5 kg 26.0 kg 2.5 kg lighter
Cell count 108 120 12 cells apart
Voltage at max power 33.80 V 37.70 V 3.90 V apart
Dimensions 1975x1134x35 mm 2177x1134x35 mm 1975x1134x35 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.
BBO 520
17,691 kWh
BGO 580
19,733 kWh
Lifetime gap
2,042 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario BBO 520 BGO 580
Standard test conditions 25 °C 100.0% of rated power 520 W 580 W
Cool, bright day 40 °C 95.7% of rated power 497 W 555 W
Typical summer roof 55 °C 91.3% of rated power 475 W 530 W
Hot roof 70 °C 87.0% of rated power 452 W 504 W
03

Full specification

Parameter BBO 520 BGO 580 Difference
Power and efficiency
Rated power 520 Wp 580 Wp +60 W for BGO 580
Module efficiency 23.20 % 23.50 % +0.30 pp for BGO 580
Power density 232.2 Wp/m² 234.9 Wp/m² Effectively the same
Open-circuit voltage 40.60 V 45.20 V 4.60 V apart
Voltage at max power 33.80 V 37.70 V 3.90 V apart
Short-circuit current 16.20 A 16.20 A Same
Current at max power 15.40 A 15.40 A Same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 1975x1134x35 mm 2177x1134x35 mm 1975x1134x35 mm vs 2177x1134x35 mm
Module area 2.240 m² 2.469 m² 0.229 m² apart
Weight 23.5 kg 26.0 kg -2.5 kg for BBO 520
Weight per kWp 45.2 kg/kWp 44.8 kg/kWp Effectively the same
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 TOPCon TOPCon Same
Cell type Monocrystalline Monocrystalline Same
Cell count 108 120 12 cells apart
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#1,306 vs #716
BGO 580 leads by 590 places
Power density
#1,328 vs #848
BGO 580 leads by 480 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#635 vs #542
BGO 580 leads by 93 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#2,878 vs #1,317
BGO 580 leads by 1,561 places
05

More useful comparisons

Open the full database
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06

Written summary

07

Questions about this pairing

Which panel is better: Bisol BBO 520 or Bisol BGO 580?
According to our database: Bisol BGO 580 has higher module efficiency (23.50% vs 23.20%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Bisol BBO 520 and Bisol BGO 580?
Bisol BBO 520 has a module efficiency of 23.20%, 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 BBO 520 use vs Bisol BGO 580?
Bisol BBO 520 uses TOPCon 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 BBO 520 and Bisol BGO 580?
Bisol BBO 520 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.