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580M vs 570M 15 of 18 identical Swap Change panels

Longi Solar LR5-72HTH-580M vs Longi Solar LR5-72HTH-570M

Longi Solar LR5-72HTH-580M
LR5-72HTH-580M
580 Wp 22.50 %
Open panel page Datasheet PDF
VS
Longi Solar LR5-72HTH-570M
LR5-72HTH-570M
570 Wp 22.10 %
Open panel page Datasheet PDF
The verdict

580M leads on the differences that matter

The largest is module efficiency: 0.40 pp more efficient. 15 of 18 comparable parameters are identical, with 1 more left out because at least one datasheet does not publish it.

See all 3 differences
How alike are they
15 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

3 of 18 parameters
Parameter 580M 570M Difference
Module efficiency 22.50 % 22.10 % 0.40 pp more efficient
Power density 224.5 Wp/m² 220.7 Wp/m² 3.9 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.
580M
19,356 kWh
570M
19,022 kWh
Lifetime gap
334 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario 580M 570M
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 580M 570M Difference
Power and efficiency
Rated power 580 Wp 570 Wp +10 W for 580M
Module efficiency 22.50 % 22.10 % +0.40 pp for 580M
Power density 224.5 Wp/m² 220.7 Wp/m² +3.9 Wp/m² for 580M
Open-circuit voltage 52.21 V 51.91 V Effectively the same
Voltage at max power 44.06 V 43.76 V Effectively the same
Short-circuit current 14.20 A 14.07 A Effectively the same
Current at max power 13.17 A 13.03 A Effectively the same
Temperature
Temperature coefficient -0.290 %/°C -0.290 %/°C Same
Mechanical
Dimensions 2278x1134x30 mm 2278x1134x30 mm Same
Module area 2.583 m² 2.583 m² Same
Weight 27.2 kg 27.2 kg Same
Weight per kWp 46.9 kg/kWp 47.7 kg/kWp Effectively the same
Warranty and degradation
Product warranty 15 yrs 15 yrs Same
Performance warranty 25 yrs 25 yrs Same
Annual degradation 0.40 %/yr 0.40 %/yr Same
Technology
Cell technology - - Neither datasheet publishes this
Cell type Monocrystalline Monocrystalline Same
Cell count 144 144 Same
Bifacial No No Same
04

Against the whole database

14,129 panels
Efficiency
#4,281 vs #6,076
580M leads by 1,795 places
Power density
#4,607 vs #6,121
580M leads by 1,514 places
Heat behaviour
#2,220 vs #2,220
Tied - the same position in the database
Weight
#1,393 vs #1,826
580M leads by 433 places
Warranty
#9,912 vs #9,912
Tied - the same position in the database
Overall
#4,852 vs #5,620
580M leads by 768 places
05

More useful comparisons

Open the full database
Same series, other bin
Longi Solar LR5-72HTH-580M vs Longi Solar LR5-72HTH-585M
The same specification on paper
Same series, other bin
Longi Solar LR5-72HTH-580M vs Longi Solar LR5-72HTH-575M
One difference: module efficiency
Same series, other bin
Longi Solar LR5-72HTH-580M vs Longi Solar LR5-72HTH-565M
3 differences, the largest is module efficiency
Same manufacturer
Longi Solar LR5-72HTH-580M vs Longi Solar LR7-72HVHF-670M
13 differences, the largest is module efficiency
Same manufacturer
Longi Solar LR5-72HTH-580M vs Longi Solar LR8-66HYD-670M
16 differences, the largest is module efficiency
Same manufacturer
Longi Solar LR5-72HTH-580M vs Longi Solar LR7-72HVH-670M
13 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Longi Solar LR5-72HTH-580M or Longi Solar LR5-72HTH-570M?
According to our database: Longi Solar LR5-72HTH-580M has higher module efficiency (22.50% vs 22.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR5-72HTH-580M and Longi Solar LR5-72HTH-570M?
Longi Solar LR5-72HTH-580M has a module efficiency of 22.50%, while Longi Solar LR5-72HTH-570M is 22.10%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR5-72HTH-580M use vs Longi Solar LR5-72HTH-570M?
Longi Solar LR5-72HTH-580M uses Monocrystalline cells; Longi Solar LR5-72HTH-570M uses Monocrystalline. 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 Longi Solar LR5-72HTH-580M and Longi Solar LR5-72HTH-570M?
Longi Solar LR5-72HTH-580M has a 25 years power warranty; Longi Solar LR5-72HTH-570M has a 25 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 156 Longi Solar 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.