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580 vs 570 16 of 19 identical Swap Change panels

Bisol BGO 580 vs Bisol BGO 570

Bisol
BGO 580
580 Wp 23.50 % TOPCon
Open panel page Datasheet PDF
VS
Bisol
BGO 570
570 Wp 23.10 % TOPCon
Open panel page Datasheet PDF
The verdict

580 leads on the differences that matter

The largest is module efficiency: 0.40 pp more efficient. 16 of 19 comparable parameters are identical.

See all 3 differences
How alike are they
16 of 19 comparable
parameters are identical
identical differs
01

What actually differs

3 of 19 parameters
Parameter 580 570 Difference
Module efficiency 23.50 % 23.10 % 0.40 pp more efficient
Power density 234.9 Wp/m² 230.9 Wp/m² 4.1 Wp/m² higher
Rated power 580 Wp 570 Wp 10 W more power
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.
580
19,733 kWh
570
19,392 kWh
Lifetime gap
341 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 580 570
Standard test conditions 25 °C 100.0% of rated power 580 W 570 W
Cool, bright day 40 °C 95.7% of rated power 555 W 545 W
Typical summer roof 55 °C 91.3% of rated power 530 W 520 W
Hot roof 70 °C 87.0% of rated power 504 W 496 W
03

Full specification

Parameter 580 570 Difference
Power and efficiency
Rated power 580 Wp 570 Wp +10 W for 580
Module efficiency 23.50 % 23.10 % +0.40 pp for 580
Power density 234.9 Wp/m² 230.9 Wp/m² +4.1 Wp/m² for 580
Open-circuit voltage 45.20 V 44.70 V Effectively the same
Voltage at max power 37.70 V 37.50 V Effectively the same
Short-circuit current 16.20 A 16.10 A Effectively the same
Current at max power 15.40 A 15.20 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2177x1134x35 mm 2177x1134x35 mm Same
Module area 2.469 m² 2.469 m² Same
Weight 26.0 kg 26.0 kg Same
Weight per kWp 44.8 kg/kWp 45.6 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 120 120 Same
Bifacial No No Same
04

Against the whole database

14,005 panels
Efficiency
#716 vs #1,570
580 leads by 854 places
Power density
#848 vs #1,637
580 leads by 789 places
Heat behaviour
#2,165 vs #2,165
Tied - the same position in the database
Weight
#542 vs #777
580 leads by 235 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#1,317 vs #1,703
580 leads by 386 places
05

More useful comparisons

Open the full database
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10 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Bisol BGO 580 or Bisol BGO 570?
According to our database: Bisol BGO 580 has higher module efficiency (23.50% vs 23.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Bisol BGO 580 and Bisol BGO 570?
Bisol BGO 580 has a module efficiency of 23.50%, while Bisol BGO 570 is 23.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Bisol BGO 580 use vs Bisol BGO 570?
Bisol BGO 580 uses TOPCon cells; Bisol BGO 570 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 BGO 580 and Bisol BGO 570?
Bisol BGO 580 has a 30 years power warranty; Bisol BGO 570 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.