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Longi Solar LR7-72HTHF-620M
Longi Solar Brand review

LR7-72HTHF-620M

620 Wp N-type
ComparePV verdict

Light for its output, short guarantee

Rank 2,851 of 14,129
Compare panels Datasheet PDF
Power (Wp)
620
Typical for its class
Efficiency (%)
23.00
Typical · median 22.77%
Density (Wp/m²)
229.5
Typical · median 227.7
Temp (%/°C)
-0.280
Strong · top 15%
Weight (kg)
28.5
Strong · 4.2 kg below median
Warranty (yrs)
25
Weak · bottom 4%

Longi Solar Hi-MO X6 Guardian (Anti-Dust) LR7-72HTHF 605~630M was designed to genuinely minimize dirt-related yield losses - without the need for continuous module cleaning. Its key advantage is the anti-dust construction, where a special frame and edge solution helps dust and dirt naturally slide off due to gravity and rain. This translates into higher energy production over time and more stable system performance, especially in locations exposed to dust, field silt, road particulates, or industrial facilities.

The panels utilize cutting-edge monocrystalline wafers in a back-contact (HPBC) structure with light-enhancing solutions, supporting high efficiency without the need for "non-optimal" parameters. For investors, lower service and cleaning requirements are also crucial, meaning reduced operational costs for utility-scale farms, commercial rooftops, and building-integrated systems.

The series also stands out for its enhanced mechanical reliability - thanks to the patented frame and advanced sealing, which facilitates module selection where durability and predictable yields are paramount.

Ranking

368 panels in the segment N-type 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.00% 22.77% Typical 1,970
Power density 229.5 227.7 Typical 2,243
Temperature coefficient -0.280 -0.290 Strong · top 15% 1,347
Weight per kWp 46.0 52.8 Strong · top 8% 939
Performance warranty 25 yrs 30 yrs Weak · bottom 4% 9,912
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

7 positive · 2 caution
Best for

Utility-scale, commercial, hot-climate and shaded-installations.

Not ideal for

Owners who want a long output guarantee.

Strengths
46.0 kg per kWp

Top 8% of the N-type 600-650 W segment, against a median of 52.8. Ranked 939th in the whole database.

-0.280 %/°C temperature coefficient

Top 15% of the N-type 600-650 W segment, against a median of -0.290.

Watch-outs
25 year performance warranty

Bottom 4% of the N-type 600-650 W segment, against a median of 30 yrs. Ranked 9,912th in the whole database.

What owners get
Distinctive anti-dust construction

The patented frame and edge design lets dust and debris slide off naturally under gravity and rainfall, limiting yield losses in dusty environments (farmland, unpaved roads, industrial sites) without frequent panel washing.

Zero-busbar HPBC cell architecture

N-type back-contact (HPBC) cells with a zero-busbar (0BB) front and multilayer anti-reflective coating raise light absorption by roughly 2.27% versus standard cells, with a power temperature coefficient of -0.26%/°C, better than typical TOPCon modules.

Low long-term power degradation

LONGi specifies first-year degradation of 1% and just 0.35% annual linear degradation thereafter, translating into higher cumulative energy yield over a 25-year service life compared with older PERC-based modules.

Efficiency on par with segment leaders

Efficiency up to 23.3% and power up to 630 Wp place the series among the segment leaders alongside comparable tier-1 N-type modules (Canadian Solar TOPBiHiKu6 - 23.3%, Resun RS8H-M-BD - 23.32%, Jinko Tiger Neo - 23.32%), reducing installation footprint for a given target capacity.

15-year product warranty

Leading competitors (Canadian Solar, Jinko Tiger Neo) typically offer a 12-year product warranty, while LONGi provides 15 years against material and workmanship defects, adding investment security during the first decade of operation.

Trade-offs
Shorter power warranty than segment leaders

The 25-year linear power warranty is shorter than the 30-year warranties offered by key peer competitors (Canadian Solar TOPBiHiKu6, Jinko Tiger Neo), which may affect LCOE calculations in projects with a very long investment horizon.

Notes from the database
  • At 23.0% efficiency, this panel is on par with typical N-type 600-650W modules
  • Power density of 229.5 W/m² matches the N-type 600-650W median
  • At -0.28%/°C, hot weather performance is typical for N-type 600-650W panels
  • At 28.5 kg, this panel is 4.3 kg lighter than N-type 600-650W median (32.8 kg) - easier handling during installation
  • #1970 for efficiency, #1347 for temperature performance out of 14129 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 620 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.00 % Typical Segment median 22.77%
Vmpp · Impp 44.48 V · 13.94 A Operating point at max power
Voc · Isc 52.72 V · 14.93 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 2382×1134×30 mm · 2.70 m² of roof
Weight 28.5 kg Strong Strong · 4.2 kg below median
Cells 144 · N-type Monocrystalline
Coefficient Pmax -0.280 %/°C Strong top 15% of its segment
Coefficient Voc · Isc -0.230 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 25 years Weak bottom 4% · median 30 yrs
End-of-warranty output 89.4 % Equals 542 W guaranteed
Degradation 1.00 → 0.40 % First year, then annual

Datasheet charts

Open datasheet PDF

Measured curves published by Longi Solar in this model's datasheet. A chart carrying a wattage was measured on that variant alone - only the ones that describe 620 Wp appear here. The rest cover the whole series.

25-Year Power Warranty 25-Year Power Warranty Whole series

Simulations

Live - change any input
Lifetime output & value
30 years at 1200 kWh/kWp/year and €0.50 per kWh
Power in year 30
-
Lifetime energy
-
Energy value
-

Degradation from this panel's own datasheet figures. No inverter, soiling or shading losses.

Heat losses
-0.280 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Longi Solar LR7-72HTHF-620M 620 W 23.00% -0.280 28.5 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +30 W, +2.2 pp, +5 yr warranty
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +25 W, +2.0 pp, +5 yr warranty
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg +50 W, +1.8 pp, +5 yr warranty
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg +50 W, +1.8 pp, +5 yr warranty
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg Cooler, +1.8 pp, +5 yr warranty
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg +50 W, +1.8 pp, +5 yr warranty
LR8-66HGD-595M 595 W 22.00% -0.280 32.5 kg Heavier, -1.0 pp, +5 yr warranty
LR7-72HGD-600M 600 W 22.20% -0.280 33.5 kg Heavier, -0.8 pp, +5 yr warranty
600M 600 W 22.40% -0.280 31.0 kg -20 W, heavier, -0.6 pp
LR7-72HTH-605M 605 W 22.40% -0.280 28.5 kg -15 W, -0.6 pp
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +60 W, +2.2 pp, +5 yr warranty
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +55 W, +2.0 pp, +5 yr warranty
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +80 W, heavier, +2.0 pp
WST-675BKX72-A2 675 W 25.00% -0.260 32.1 kg +55 W, +2.0 pp, +5 yr warranty
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +75 W, heavier, +1.9 pp

Found 1144 panels of the same or similar size to this one, within ±10 mm. See them here Found 1150 panels of the same or similar size to this one, within ±25 mm. See them here Found 1261 panels of the same or similar size to this one, within ±50 mm. See them here Found 1942 panels of the same or similar size to this one, within ±100 mm. See them here

About the Hi-MO X6 Guardian (Anti-Dust) LR7-72HTHF 605~630M series

6 answered

These answers cover the whole series. Where a figure differs, the specification above is this module's own.

How does the anti-dust technology work in the LONGi Hi-MO X6 Guardian LR7-72HTHF panels?
The anti-dust design relies on a patented frame where the short-side rail sits flush with the module glass. This allows dust, mud, and particulate deposits to slide off naturally under gravity and rainfall without accumulating on the frame ledge. The solution is backed by over 120 patents and validated through more than 500 days of field testing. In practice, it means measurably lower soiling losses and reduced cleaning frequency.
What cell technology is used in the LONGi Hi-MO X6 Guardian LR7-72HTHF series and what is its efficiency?
The LR7-72HTHF series uses N-type cells in an HPBC (Hybrid Passivated Back Contact) architecture. Moving electrodes to the rear of the cell eliminates front-side metallization shading, enabling module efficiency up to 23.3% at a maximum power output of 630 Wp. N-type technology also delivers lower light-induced degradation (LID) and a lower temperature coefficient compared to conventional P-type PERC cells.
What warranty does LONGi offer on the Hi-MO X6 Guardian LR7-72HTHF series?
LONGi provides a 15-year product warranty covering material and workmanship defects, along with a 25-year linear power output warranty. After 25 years of operation, output should remain at no less than 87.4% of rated power. LONGi is an independently verified Tier 1 manufacturer, which adds confidence that warranty claims will be honored over the module's full service life.
Are LONGi Hi-MO X6 Guardian LR7-72HTHF panels suitable for utility-scale PV farms near roads or industrial facilities?
Yes, the Guardian series is specifically engineered for high-soiling environments: farms near unpaved roads, agricultural fields, industrial plants, and semi-arid regions. The self-cleaning frame reduces O&M costs and cleaning frequency. The modules are rated for 5400 Pa front-load and 2400 Pa rear-load, making them well-suited for large ground-mount systems and industrial rooftops.
How does the Hi-MO X6 Guardian LR7-72HTHF series perform in high temperatures during summer?
The temperature coefficient of Pmax for this series is -0.28%/°C, better than typical PERC modules at around -0.35%/°C. In practice, for every degree above 25°C the module loses less power than older P-type technology. This translates into higher energy yield on hot, sunny days, exactly when the system should be generating the most electricity.
Is the LONGi Hi-MO X6 Guardian LR7-72HTHF a bifacial module?
No, the LR7-72HTHF Guardian Anti-Dust variant is a monofacial module with a backsheet instead of a rear glass. While this limits potential albedo gains, it is a deliberate design choice that reduces module weight and simplifies installation. The high HPBC cell efficiency of up to 23.3% effectively compensates for the absence of rear-side light harvesting.
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