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LR7-60HVH-540M vs TWMND-72 HD575 2 of 19 identical Swap Change panels

Longi Solar LR7-60HVH-540M vs Tongwei TWMND-72 HD575

Longi Solar LR7-60HVH-540M
LR7-60HVH-540M
540 Wp 23.90 % N-type
Open panel page Datasheet PDF
VS
Tongwei TWMND-72 HD575
TWMND-72 HD575
575 Wp 22.30 % TOPCon Bifacial
Open panel page Datasheet PDF
The verdict

LR7-60HVH-540M leads on the differences that matter

The largest is module efficiency: 1.60 pp more efficient. 2 of 19 comparable parameters are identical.

See all 17 differences
How alike are they
2 of 19 comparable
parameters are identical
identical differs
01

What actually differs

17 of 19 parameters
Parameter LR7-60HVH-540M TWMND-72 HD575 Difference
Module efficiency 23.90 % 22.30 % 1.60 pp more efficient
Power density 239.3 Wp/m² 222.6 Wp/m² 16.7 Wp/m² higher
Rated power 540 Wp 575 Wp 35 W more power
Weight 25.0 kg 31.5 kg 6.5 kg lighter
Weight per kWp 46.3 kg/kWp 54.8 kg/kWp 8.5 kg/kWp lighter
Temperature coefficient -0.260 %/°C -0.280 %/°C 0.020 %/°C better in heat
Product warranty 15 yrs 12 yrs 3 yrs longer
Open-circuit voltage 44.88 V 52.10 V 7.22 V apart
Module area 2.257 m² 2.583 m² 0.327 m² apart
Short-circuit current 15.25 A 13.80 A 1.45 A apart
Cell technology N-type TOPCon N-type vs TOPCon
Annual degradation 0.35 %/yr 0.40 %/yr 0.05 %/yr slower
Voltage at max power 37.11 V 43.76 V 6.65 V apart
Cell count 120 144 24 cells apart
Bifacial No Yes No vs Yes
Current at max power 14.55 A 13.14 A 1.41 A apart
Dimensions 1990x1134x30 mm 2278x1134x30 mm 1990x1134x30 mm vs 2278x1134x30 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
LR7-60HVH-540M
18,259 kWh
TWMND-72 HD575
19,292 kWh
Lifetime gap
1,033 kWh
Output when it is hot
Rated power carried across the range a module actually sees
Scenario LR7-60HVH-540M TWMND-72 HD575
Standard test conditions 25 °C 100.0% of rated power 540 W 575 W
Cool, bright day 40 °C 95.8% of rated power 519 W 551 W
Typical summer roof 55 °C 91.6% of rated power 498 W 527 W
Hot roof 70 °C 87.4% of rated power 477 W 503 W
03

Full specification

Parameter LR7-60HVH-540M TWMND-72 HD575 Difference
Power and efficiency
Rated power 540 Wp 575 Wp +35 W for TWMND-72 HD575
Module efficiency 23.90 % 22.30 % +1.60 pp for LR7-60HVH-540M
Power density 239.3 Wp/m² 222.6 Wp/m² +16.7 Wp/m² for LR7-60HVH-540M
Open-circuit voltage 44.88 V 52.10 V 7.22 V apart
Voltage at max power 37.11 V 43.76 V 6.65 V apart
Short-circuit current 15.25 A 13.80 A 1.45 A apart
Current at max power 14.55 A 13.14 A 1.41 A apart
Temperature
Temperature coefficient -0.260 %/°C -0.280 %/°C +0.020 %/°C for LR7-60HVH-540M
Mechanical
Dimensions 1990x1134x30 mm 2278x1134x30 mm 1990x1134x30 mm vs 2278x1134x30 mm
Module area 2.257 m² 2.583 m² 0.327 m² apart
Weight 25.0 kg 31.5 kg -6.5 kg for LR7-60HVH-540M
Weight per kWp 46.3 kg/kWp 54.8 kg/kWp -8.5 kg/kWp for LR7-60HVH-540M
Warranty and degradation
Product warranty 15 yrs 12 yrs +3 yrs for LR7-60HVH-540M
Performance warranty 30 yrs 30 yrs Same
Annual degradation 0.35 %/yr 0.40 %/yr -0.05 %/yr for LR7-60HVH-540M
Technology
Cell technology N-type TOPCon N-type vs TOPCon
Cell type Monocrystalline Monocrystalline Same
Cell count 120 144 24 cells apart
Bifacial No Yes No vs Yes
04

Against the whole database

14,129 panels
Efficiency
#378 vs #5,161
LR7-60HVH-540M leads by 4,783 places
Power density
#380 vs #5,612
LR7-60HVH-540M leads by 5,232 places
Heat behaviour
#515 vs #1,347
LR7-60HVH-540M leads by 832 places
Weight
#1,110 vs #9,257
LR7-60HVH-540M leads by 8,147 places
Warranty
#21 vs #21
Tied - the same position in the database
Overall
#3,567 vs #4,927
LR7-60HVH-540M leads by 1,360 places
05

More useful comparisons

Open the full database
Same series, other bin
Longi Solar LR7-60HVH-540M vs Longi Solar LR7-60HVH-560M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-60HVH-540M vs Longi Solar LR7-60HVH-555M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-60HVH-540M vs Longi Solar LR7-60HVH-550M
3 differences, the largest is module efficiency
Same series, other bin
Longi Solar LR7-60HVH-540M vs Longi Solar LR7-60HVH-545M
One difference: module efficiency
Same series, other bin
Longi Solar LR7-60HVH-540M vs Longi Solar LR7-60HVH-535M
One difference: module efficiency
Same series, other bin
Tongwei TWMND-72 HD575 vs Tongwei TWMNF-66HD750
12 differences, the largest is module efficiency
06

Written summary

07

Questions about this pairing

Which panel is better: Longi Solar LR7-60HVH-540M or Tongwei TWMND-72 HD575?
According to our database: Longi Solar LR7-60HVH-540M has higher module efficiency (23.90% vs 22.30%); Longi Solar LR7-60HVH-540M tolerates heat better (temp coeff -0.260%/°C vs -0.280%/°C). See the full spec comparison and 30-year energy simulation above for a complete picture.
What is the efficiency of Longi Solar LR7-60HVH-540M and Tongwei TWMND-72 HD575?
Longi Solar LR7-60HVH-540M has a module efficiency of 23.90%, while Tongwei TWMND-72 HD575 is 22.30%. Higher efficiency means more electricity from the same roof area - useful when space is limited.
What cell technology does Longi Solar LR7-60HVH-540M use vs Tongwei TWMND-72 HD575?
Longi Solar LR7-60HVH-540M uses N-type cells; Tongwei TWMND-72 HD575 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 Longi Solar LR7-60HVH-540M and Tongwei TWMND-72 HD575?
Longi Solar LR7-60HVH-540M has a 30 years power warranty; Tongwei TWMND-72 HD575 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 LR7-60HVH-540M and Tongwei TWMND-72 HD575 bifacial panels?
Tongwei TWMND-72 HD575 is bifacial (captures light from both faces); Longi Solar LR7-60HVH-540M is monofacial. Bifacial panels work best on ground mounts or raised structures with a light-coloured surface underneath.
Compare Longi Solar and Tongwei as manufacturers Portfolio, efficiency, cell technologies and warranty terms

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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.