625M vs 655M 15 of 19 identical Swap Change panels

Longi Solar LR7-72HYD-625M vs Longi Solar LR7-72HYD-655M

Q: Which panel is better: Longi Solar LR7-72HYD-625M or Longi Solar LR7-72HYD-655M?

According to our database: Longi Solar LR7-72HYD-655M has higher module efficiency (24.20% vs 23.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.

Q: What is the efficiency of Longi Solar LR7-72HYD-625M and Longi Solar LR7-72HYD-655M?

Longi Solar LR7-72HYD-625M has a module efficiency of 23.10%, while Longi Solar LR7-72HYD-655M is 24.20%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

Q: What cell technology does Longi Solar LR7-72HYD-625M use vs Longi Solar LR7-72HYD-655M?

Longi Solar LR7-72HYD-625M uses N-type cells; Longi Solar LR7-72HYD-655M uses N-type. Modern n-type technologies (TOPCon, HJT, BC) typically deliver higher efficiency and lower degradation compared to older PERC (p-type) cells.

Q: What is the warranty on Longi Solar LR7-72HYD-625M and Longi Solar LR7-72HYD-655M?

Longi Solar LR7-72HYD-625M has a 30 years power warranty; Longi Solar LR7-72HYD-655M 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.

Q: Are Longi Solar LR7-72HYD-625M and Longi Solar LR7-72HYD-655M bifacial panels?

Both Longi Solar LR7-72HYD-625M and Longi Solar LR7-72HYD-655M 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.

LR7-72HYD-625M

625 Wp 23.10 % N-type Bifacial

Open panel page Datasheet PDF

LR7-72HYD-655M

655 Wp 24.20 % N-type Bifacial

Open panel page Datasheet PDF

The verdict

655M leads on the differences that matter

The largest is module efficiency: 1.10 pp more efficient. 15 of 19 comparable parameters are identical.

See all 4 differences

How alike are they

15 of 19 comparable
parameters are identical

identical differs

What actually differs

4 of 19 parameters

Parameter 625M 655M Difference

Module efficiency 23.10 % 24.20 % 1.10 pp more efficient

Power density 231.4 Wp/m² 242.5 Wp/m² 11.1 Wp/m² higher

Rated power 625 Wp 655 Wp 30 W more power

Weight per kWp 53.6 kg/kWp 51.1 kg/kWp 2.5 kg/kWp lighter

What it means on a roof

Thirty years of production

Each panel's own declared degradation curve, at 1,200 kWh/kWp a year

Cell temperature

Same temp coeff. for both panels (-0.260 %/°C), so a warmer roof scales both curves by the same factor: the totals fall together and neither panel gains on the other.

625M

21,133 kWh

655M

22,148 kWh

Lifetime gap

1,015 kWh

Output when it is hot

Rated power carried across the range a module actually sees

Scenario 625M 655M

Standard test conditions 25 °C 100.0% of rated power 625 W 655 W

Cool, bright day 40 °C 96.1% of rated power 601 W 629 W

Typical summer roof 55 °C 92.2% of rated power 576 W 604 W

Hot roof 70 °C 88.3% of rated power 552 W 578 W

Full specification

Parameter 625M 655M Difference

Power and efficiency

Rated power 625 Wp 655 Wp +30 W for 655M

Module efficiency 23.10 % 24.20 % +1.10 pp for 655M

Power density 231.4 Wp/m² 242.5 Wp/m² +11.1 Wp/m² for 655M

Open-circuit voltage 53.72 V 54.32 V Effectively the same

Voltage at max power 44.37 V 44.97 V Effectively the same

Short-circuit current 14.73 A 15.22 A Effectively the same

Current at max power 14.09 A 14.57 A Effectively the same

Temperature

Temperature coefficient -0.260 %/°C -0.260 %/°C Same

Mechanical

Dimensions 2382x1134x30 mm 2382x1134x30 mm Same

Module area 2.701 m² 2.701 m² Same

Weight 33.5 kg 33.5 kg Same

Weight per kWp 53.6 kg/kWp 51.1 kg/kWp -2.5 kg/kWp for 655M

Warranty and degradation

Product warranty 12 yrs 12 yrs Same

Performance warranty 30 yrs 30 yrs Same

Annual degradation 0.35 %/yr 0.35 %/yr Same

Technology

Cell technology N-type N-type Same

Cell type Monocrystalline Monocrystalline Same

Cell count 144 144 Same

Bifacial Yes Yes Same

Against the whole database

14,005 panels

Efficiency

#1,570 vs #184

655M leads by 1,386 places

Power density

#1,513 vs #172

655M leads by 1,341 places

Heat behaviour

#511 vs #511

Tied - the same position in the database

Weight

#7,601 vs #4,503

655M leads by 3,098 places

Warranty

#21 vs #21

Tied - the same position in the database

Overall

#2,270 vs #1,007

655M leads by 1,263 places

More useful comparisons

Open the full database

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Longi Solar LR7-72HYD-625M vs Longi Solar LR7-72HYD-645M

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Longi Solar LR7-72HYD-625M vs Longi Solar LR7-72HYD-635M

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Same series, other bin

Longi Solar LR7-72HYD-625M vs Longi Solar LR7-72HYD-630M

One difference: module efficiency

Written summary

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Questions about this pairing

Which panel is better: Longi Solar LR7-72HYD-625M or Longi Solar LR7-72HYD-655M?

According to our database: Longi Solar LR7-72HYD-655M has higher module efficiency (24.20% vs 23.10%). See the full spec comparison and 30-year energy simulation above for a complete picture.

What is the efficiency of Longi Solar LR7-72HYD-625M and Longi Solar LR7-72HYD-655M?

Longi Solar LR7-72HYD-625M has a module efficiency of 23.10%, while Longi Solar LR7-72HYD-655M is 24.20%. Higher efficiency means more electricity from the same roof area - useful when space is limited.

What cell technology does Longi Solar LR7-72HYD-625M use vs Longi Solar LR7-72HYD-655M?

Longi Solar LR7-72HYD-625M uses N-type cells; Longi Solar LR7-72HYD-655M uses N-type. 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 LR7-72HYD-625M and Longi Solar LR7-72HYD-655M?

Longi Solar LR7-72HYD-625M has a 30 years power warranty; Longi Solar LR7-72HYD-655M 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 Longi Solar LR7-72HYD-625M and Longi Solar LR7-72HYD-655M bifacial panels?

Both Longi Solar LR7-72HYD-625M and Longi Solar LR7-72HYD-655M 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 174 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.