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Longi Solar LR7-72HTH-605M
Longi Solar Brand review

LR7-72HTH-605M

605 Wp N-type
ComparePV verdict

Strong in heat, short guarantee

Rank 4,020 of 14,005
Compare panels Datasheet PDF
Power (Wp)
605
Weak · bottom 10%
Efficiency (%)
22.40
Typical · median 22.77%
Density (Wp/m²)
224.0
Typical · median 227.7
Temp (%/°C)
-0.280
Strong · top 14%
Weight (kg)
28.5
Strong · 4.0 kg below median
Warranty (yrs)
25
Weak · bottom 4%

The Longi Solar LR7-72HTH 605-615M (Hi-MO X6 Explorer) series was designed to maximize the yield per square meter, where every module and every kilowatt-hour counts. Its key feature is HPBC (back contact) cell technology, where the conductive paths are moved to the rear of the cells. This allows the front side of the module to capture more light, and the aesthetics align with the real improvement in performance under suboptimal sunlight conditions.

In practice, this translates to higher energy production in high temperatures and overcast conditions and reduced losses due to optical shadowing typical of conventional designs. An additional advantage is greater resistance to micro-cracking, thanks to connection solutions that limit stress within the structure.

These are modules for installations that need to operate reliably and predictably - especially for commercial and industrial (C&I) rooftop projects, on factory halls and warehouses, and in large ground-mounted systems, where reducing the number of panels and BOS costs provides quick economic effects.

Ranking

359 panels in the segment N-type 600-650 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.40% 22.77% Typical 4,774
Power density 224.0 227.7 Typical 4,780
Temperature coefficient -0.280 -0.290 Strong · top 14% 1,309
Weight per kWp 47.1 52.7 Strong · top 17% 1,498
Performance warranty 25 yrs 30 yrs Weak · bottom 4% 9,798
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

7 positive · 4 caution
Best for

Commercial, utility-scale and hot-climate.

Not ideal for

Owners who want a long output guarantee.

Strengths
-0.280 %/°C temperature coefficient

Top 14% of the N-type 600-650 W segment, against a median of -0.290.

47.1 kg per kWp

Top 17% of the N-type 600-650 W segment, against a median of 52.7.

Watch-outs
25 year performance warranty

Bottom 4% of the N-type 600-650 W segment, against a median of 30 yrs. Ranked 9,798th in the whole database.

What owners get
HPBC back-contact cell technology

Conductive paths are moved to the rear of the cell, eliminating front-side optical shading and delivering higher energy yield under low-irradiance conditions and elevated temperatures compared to conventional PERC designs.

High efficiency of 22.4-22.8%

Efficiency up to 22.8% clearly outperforms competing series built on older cell technologies, such as GCL-M12/60H (21.7%) and Risen TITAN (21.7%), at the same 615 Wp maximum power.

Tier-1, bankable manufacturer

Longi Solar has operated since 2000 and is one of the world's largest module manufacturers, confirming its Tier-1 bankable status - an important factor for financing C&I and utility-scale projects.

Low LID/LeTID degradation

N-type cells are less susceptible to light- and temperature-induced degradation than older P-type PERC cells, resulting in more stable energy production over the system's lifetime.

High unit power up to 615 Wp

Module power up to 615 Wp reduces the number of panels needed to reach a target system capacity, lowering BoS costs (wiring, racking, labor) in C&I rooftop and ground-mount projects.

Trade-offs
Production discontinued

The series launched in 2024 and was discontinued in 2025, meaning limited availability going forward and potential difficulties with warranty service and matching replacement modules in the future.

No bifacial variant available

The module is monofacial, forgoing the additional rear-side yield gain typical of bifacial N-type modules increasingly used in the large ground-mount installations this series targets.

Power warranty shorter than current market standard

The 15-year product and 25-year power warranty are shorter than the 30-year linear warranties now common among premium N-type panels, which can affect LCOE calculations for long-term C&I projects.

Notes from the database
  • At 22.4% efficiency, this panel is on par with typical N-type 600-650W modules
  • Power density of 224.0 W/m² is 3.7 W/m² below N-type 600-650W median (227.7 W/m²) - needs more roof space
  • Temperature coefficient of -0.28%/°C matches the N-type 600-650W median
  • Weight of 28.5 kg (4.0 kg below N-type 600-650W median of 32.5 kg) allows easier transport and roof mounting
  • In the top 34% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 605 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.40 % Typical Segment median 22.77%
Vmpp · Impp 44.03 V · 13.75 A Operating point at max power
Voc · Isc 52.27 V · 14.74 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 · 4.0 kg below median
Cells 144 · N-type Monocrystalline
Coefficient Pmax -0.280 %/°C Strong top 14% 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 529 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 605 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 LR7-72HTH-605M 605 W 22.40% -0.280 28.5 kg You are here
AIKO-A650-MAE72Mw 650 W 25.20% -0.260 27.0 kg +45 W, +2.8 pp, +5 yr warranty
AIKO-A645-MAE72Mw 645 W 25.00% -0.260 27.0 kg +40 W, +2.6 pp, +5 yr warranty
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg -45 W, +2.4 pp, +5 yr warranty
AIKO-A640-MAE72Mw 640 W 24.80% -0.260 27.0 kg +35 W, +2.4 pp, +5 yr warranty
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg -50 W, +2.2 pp, +5 yr warranty
AIKO-A635-MAE72Mw 635 W 24.60% -0.260 27.0 kg +30 W, +2.2 pp, +5 yr warranty
LR8-66HGD-595M 595 W 22.00% -0.280 32.5 kg Heavier, -0.4 pp, +5 yr warranty
LR7-72HGD-600M 600 W 22.20% -0.280 33.5 kg Heavier, +5 yr warranty
600M 600 W 22.40% -0.280 31.0 kg Heavier
AIKO-A680-MDE72Mw 680 W 25.20% -0.260 29.0 kg +75 W, +2.8 pp, +5 yr warranty
AIKO-A675-MDE72Mw 675 W 25.00% -0.260 29.0 kg +70 W, +2.6 pp, +5 yr warranty
AIKO-A700-MAE78Dw 700 W 25.00% -0.260 34.5 kg +95 W, heavier, +2.6 pp
AIKO-A695-MAE78Dw 695 W 24.90% -0.260 34.5 kg +90 W, heavier, +2.5 pp
AIKO-G670-MCH72Mw 670 W 24.80% -0.260 28.2 kg +65 W, +2.4 pp, +5 yr warranty
LR7-72HVHF-670M 670 W 24.80% -0.260 28.5 kg +65 W, +2.4 pp, +5 yr warranty
JKM650-670N-66QL6-BDV (670W class) 670 W 24.80% -0.260 32.5 kg +65 W, +2.4 pp, +5 yr warranty

Found 1119 panels of the same or similar size to this one, within ±10 mm. See them here Found 1125 panels of the same or similar size to this one, within ±25 mm. See them here Found 1236 panels of the same or similar size to this one, within ±50 mm. See them here Found 1917 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is HPBC technology, and how do the LONGi LR7-72HTH panels differ from standard modules?
HPBC (Hybrid Passivated Back Contact) is an N-type cell architecture in which the conductive busbars are relocated to the rear of the cell. The front surface remains unobstructed, improving light absorption compared to conventional PERC designs. In practice, this delivers higher energy yield at low irradiance and eliminates optical shading losses from front-side interconnects — an advantage visible throughout the day, not only at peak irradiance.
What is the rated power output and efficiency of the LONGi LR7-72HTH 615M?
The top variant in the series reaches 615 Wp with a module efficiency of up to 22.8%. The series spans from 605 W to 615 W in 5 W power classes. These figures rank among the highest available for monofacial N-type crystalline modules, enabling a high energy yield per square meter — a key advantage wherever roof or land area is constrained.
How does the Hi-MO X6 Explorer LR7-72HTH perform in high temperatures and overcast conditions?
N-type HPBC cells carry a low temperature coefficient of approximately -0.29%/°C (Pmax), resulting in smaller power losses during summer heat compared to P-type PERC cells (~-0.35%/°C). The back-contact architecture also eliminates optical shading from front-side busbars, improving yield under diffuse light — overcast skies, early morning, and late afternoon — where conventional modules lose proportionally more output.
What type of installations is the LONGi Hi-MO X6 Explorer LR7-72HTH best suited for?
At 2382 × 1134 mm and 28.5 kg, the LR7-72HTH 615M modules are primarily designed for C&I rooftop systems — industrial halls, warehouses, large flat roofs — and utility-scale ground-mount installations. The high unit power output (up to 615 Wp) reduces panel count and cuts BoS costs including cabling, racking, and labor. On steep residential roofs, the module's large footprint may complicate on-roof handling and installation logistics.
What warranty does the LONGi Solar LR7-72HTH Hi-MO X6 Explorer series carry?
The LR7-72HTH series comes with a 15-year product warranty covering manufacturing defects and materials, plus a 25-year linear power warranty. After 25 years of operation, LONGi guarantees a minimum of 87.4% of the rated power output. As a Tier 1 manufacturer with strong financial standing, LONGi's long-term warranty commitments carry real credibility — especially important for C&I projects with extended payback horizons.
Is the LONGi Solar LR7-72HTH 605-615M Hi-MO X6 Explorer series still available for purchase?
The LR7-72HTH 605-615M (Hi-MO X6 Explorer) series has been discontinued and is no longer in active production at LONGi. Purchase is only possible from remaining distributor stock, and availability is limited. For new projects, currently manufactured series such as the Hi-MO X6 Max or LONGi's newer lineups offer comparable or improved specifications and are available through regular distribution channels.
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