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Longi Solar LR7-54HVH-475M
Longi Solar Brand review

LR7-54HVH-475M

475 Wp N-type
ComparePV verdict

Strong in heat, no clear weak spot

Rank 6,386 of 14,005
Compare panels Datasheet PDF
Power (Wp)
475
Typical for its class
Efficiency (%)
23.30
Strong · top 15%
Density (Wp/m²)
232.7
Strong · top 19%
Temp (%/°C)
-0.260
Strong · top 6%
Weight (kg)
21.6
Strong · 2.1 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

The Longi Solar Hi-MO X10 Explorer (LR7-54HVH 475-490M) series is designed for maximum yield from limited rooftop space - especially where every square meter counts and aesthetics matter. The key advantage is HPBC 2.0 back-contact technology, which moves the cell connections to the rear side, enabling the front side to operate more efficiently and reliably under daily sunlight conditions. In practice, this means more energy harvested from the same space and more predictable system performance throughout the year.

It also stands out from the competition with resistance to partial shading and reduced hotspot risk - crucial for applications near chimneys, window frames, antennas, or trees. The incorporated TaiRay n-type wafers help maintain high efficiency over the long term, while the 0BB construction enhances connection reliability and supports module operation under heavy environmental stress. This makes it an excellent choice for demanding premium residential installations and small to medium-sized commercial rooftops, where yield, durability, and trouble-free operation are key priorities.

Ranking

301 panels in the segment N-type 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.30% 22.52% Strong · top 15% 1,017
Power density 232.7 225.2 Strong · top 19% 1,189
Temperature coefficient -0.260 -0.290 Strong · top 6% 511
Weight per kWp 45.5 49.5 Strong · top 14% 743
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

8 positive · 3 caution
Best for

Residential, commercial and shaded-installations.

Strengths
-0.260 %/°C temperature coefficient

Top 6% of the N-type 450-500 W segment, against a median of -0.290. Ranked 511th in the whole database.

45.5 kg per kWp

Top 14% of the N-type 450-500 W segment, against a median of 49.5.

23.30% module efficiency

Top 15% of the N-type 450-500 W segment, against a median of 22.52%.

What owners get
HPBC 2.0 – certified shading resilience

The HPBC 2.0 back-contact technology earned TÜV Rheinland's A+ anti-shading rating (June 2025). Independent testing showed hotspot temperatures approximately 77°C lower than TOPCon modules and up to 32.62% more power output under partial shading.

Low power degradation over 30 years

The module loses under 1% of power in year one, followed by just 0.35% per year through year 30 - yielding roughly 88.9% of rated power after 30 years, outperforming typical PERC modules that degrade around 0.55%/year.

0BB design on N-type TaiRay wafer

Eliminating conventional busbars reduces microcrack risk and resistive losses, while the N-type cells on TaiRay wafers help sustain higher efficiency retention over the long term compared with older P-type/PERC technology.

Clean, uniform module front

Moving electrical contacts to the cell's rear removes visible busbars from the front surface, giving the series an attractive appearance well suited to premium residential installations where roof aesthetics matter.

Tier-1 bankable manufacturer

Longi Solar has operated since 2000 and is classified as a Tier-1 (bankable) manufacturer, easing project financing and reducing risk perception for lenders and investors.

Trade-offs
Efficiency below comparable models

At the same 475 W max power rating, this series delivers 23.3% efficiency versus 23.8% for comparable modules from JA Solar (JAM54D40 LB), Astronergy (ASTRO N7s 2.0), and Sun Earth (TITAN Dual GLASS). This means a larger module footprint is needed for equivalent output, which cuts against the product's positioning for space-constrained rooftops.

Shorter product warranty than a key competitor

The 15-year product warranty is shorter than the 25 years offered by Astronergy ASTRO N7s 2.0, despite both products sharing an identical 30-year linear power warranty.

No bifacial variant available

The series lacks a bifacial option, limiting potential rear-side yield gains available with elevated racking or reflective commercial roofing - a feature offered in some comparable N-type modules.

Notes from the database
  • Efficiency of 23.3% is 0.8pp above the N-type 450-500W median (22.5%)
  • Power density of 232.7 W/m² packs 7.5 W/m² more into the same footprint vs N-type 450-500W median (225.2 W/m²)
  • At -0.26%/°C (vs median -0.29%/°C), loses ~1% less power in hot conditions
  • At 21.6 kg, this panel is 2.1 kg lighter than N-type 450-500W median (23.7 kg) - easier handling during installation
  • Ranked #1017 out of 14005 panels for efficiency in the database

Specifications

Open datasheet PDF
Nominal power (Pmax) 475 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.30 % Strong Segment median 22.52%
Vmpp · Impp 33.16 V · 14.33 A Operating point at max power
Voc · Isc 40.18 V · 15.03 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1800×1134×30 mm · 2.04 m² of roof
Weight 21.6 kg Strong Strong · 2.1 kg below median
Cells 108 · N-type Monocrystalline
Coefficient Pmax -0.260 %/°C Strong top 6% of its segment
Coefficient Voc · Isc -0.200 · 0.050 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 15 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 88.8 % Equals 422 W guaranteed
Degradation 1.00 → 0.35 % 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 475 Wp appear here. The rest cover the whole series.

30-Year Power Warranty 30-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
-0.260 %/°C against a segment median of -0.290
-
Filter these
Size
Panel Power Eff. Temp. Weight Difference
Longi Solar LR7-54HVH-475M 475 W 23.30% -0.260 21.6 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +35 W, cooler, +1.7 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +20 W, +1.5 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +30 W, cooler, +1.4 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +15 W, +1.2 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +25 W, cooler, +1.2 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +25 W, +1.2 pp
LR7-54HGBB-440M 440 W 21.60% -0.280 23.6 kg -35 W, hotter, -1.7 pp
LR7-54HGBB-445M 445 W 21.80% -0.280 23.6 kg -30 W, hotter, -1.5 pp
LR7-54HGBB-450M 450 W 22.00% -0.280 23.6 kg -25 W, hotter, -1.3 pp
LR7-54HTH-455M 455 W 22.30% -0.280 21.6 kg Hotter, -1.0 pp, -5 yr warranty
LR7-54HTH-460M 460 W 22.50% -0.280 21.6 kg Hotter, -0.8 pp, -5 yr warranty
LR7-54HTH-465M 465 W 22.80% -0.280 21.6 kg Hotter, -0.5 pp, -5 yr warranty

Found 197 panels of the same or similar size to this one, within ±10 mm. See them here Found 201 panels of the same or similar size to this one, within ±25 mm. See them here Found 1712 panels of the same or similar size to this one, within ±50 mm. See them here Found 4014 panels of the same or similar size to this one, within ±100 mm. See them here

Common questions

6 answered
What is HPBC 2.0 technology in the LONGi Hi-MO X10 Explorer, and why does it matter?
HPBC 2.0 (High-Performance Back Contact) relocates all electrical interconnects to the rear of the cell, leaving the front surface completely free of busbars. This maximizes the light-collecting area and improves thermal stability. As a result, the LR7-54HVH series reaches up to 24% module efficiency while limiting annual power degradation to just 0.35% from year two onward — a stronger result than most n-type TOPCon modules.
Do the LONGi Hi-MO X10 Explorer panels perform well on roofs with chimneys, dormers, or partial shading?
Yes. The n-type HPBC 2.0 cell design combined with a three-diode IP68 junction box limits power losses under partial shading and significantly reduces hot-spot risk compared to standard PERC modules. This makes the LR7-54HVH a strong choice for rooftops where chimneys, dormers, antennas, or nearby trees cast intermittent shadows across part of the array throughout the day.
What are the dimensions and weight of the LONGi LR7-54HVH, and does it fit on a small residential roof?
The module measures 1800×1134×30 mm and weighs 21.6 kg. The 108 half-cut cell layout (6×18) keeps the footprint compact relative to its 475–490 Wp output range. With up to 24% module efficiency, homeowners can generate more energy from a limited roof area compared to standard PERC panels of the same physical size — a key advantage on smaller residential rooftops.
What warranty does LONGi offer on the Hi-MO X10 Explorer LR7-54HVH panels?
LONGi provides a 15-year product warranty covering materials and workmanship, plus a 30-year linear power output warranty. First-year degradation is capped at under 1%, with a maximum of 0.35% per year from year two onward. After 30 years, the module retains approximately 87.4% of its rated output. Backed by LONGi's Tier 1 status, this is one of the most robust warranty packages available in the premium PV segment.
How do the LONGi Hi-MO X10 Explorer panels handle high temperatures during summer?
The temperature coefficient of Pmax is −0.260%/°C, noticeably better than typical PERC modules at around −0.35%/°C. The back-contact architecture also contributes to lower cell operating temperatures, reducing heat-related power losses on hot days. In practice, this translates to a higher annual energy yield in Polish and Central European climates, especially during peak summer production hours.
Is the LONGi Hi-MO X10 Explorer LR7-54HVH a good choice for a residential rooftop prosumer installation?
Yes. The compact 1800×1134 mm footprint and 21.6 kg weight make handling and mounting on standard roof structures straightforward, while up to 24% efficiency maximizes output from limited roof space. LONGi is a Tier 1 manufacturer, providing confidence in long-term warranty fulfillment and module bankability. The series suits both premium residential systems and small-to-medium commercial rooftop installations.
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