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Longi Solar LR7-54HVB-480M
Longi Solar Brand review

LR7-54HVB-480M

480 Wp N-type
ComparePV verdict

Strong in heat, no clear weak spot

Rank 9,198 of 14,005
Compare panels Datasheet PDF
Power (Wp)
480
Typical for its class
Efficiency (%)
23.50
Strong · top 11%
Density (Wp/m²)
235.2
Strong · top 12%
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 X10 Single Glass Premium Black (LR7-54HVB) series was designed for maximum energy production on limited rooftop surfaces, without compromising on aesthetics. The use of n-type cells and HPBC (back contact) technology minimizes losses due to shading and uneven sunlight exposure, while also improving module performance in low-light conditions. This is a practical advantage in the Polish context - near chimneys, window frames, or trees, where traditional panels often lose yield.

The single glass variant facilitates installation in typical rooftop setups while maintaining high resistance to loads and weather factors. Visually, it stands out with its uniform, deep black finish - Premium Black is an excellent choice for investors seeking a discreet and cohesive installation that complements modern roofing.

The LR7-54HVB series is suitable for single-family homes and small commercial properties, where high power density, stability, and long-term profitability, thanks to the extended linear power warranty, are essential.

Ranking

301 panels in the segment N-type 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 23.50% 22.52% Strong · top 11% 716
Power density 235.2 225.2 Strong · top 12% 718
Temperature coefficient -0.260 -0.290 Strong · top 6% 511
Weight per kWp 45.0 49.5 Strong · top 10% 598
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Price offers

2 from shops we track
Shop Country Price Per kWp Stock Offer updated Link to shop
www.photovoltaik-shop.com Germany 106 € incl. VAT 220.83 €/kWp In stock yesterday Visit shop
AZ Solar Shop Italy - - Not stated 10h ago Visit shop

Signals from the data

8 positive · 1 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.

45.0 kg per kWp

Top 10% of the N-type 450-500 W segment, against a median of 49.5.

23.50% module efficiency

Top 11% of the N-type 450-500 W segment, against a median of 22.52%.

What owners get
Class-leading efficiency in the segment

Efficiency of 23.3-24.3% clearly outperforms comparable peer series: Solarspace SS8-60HD (22.87%), Hanersun Hitouch 5N (23%), and Resun RS8K-M-FB (22.94%) - all at the same maximum power of 495 Wp. This means less module area is needed to reach the same power output, which matters on constrained roof space.

HPBC 2.0 - real shading resilience

Per LONGi testing (TÜV Rheinland certified) with 50% single-cell shading, Hi-MO X10 modules show an average power loss of just 10.15%, versus 36.48% for comparable TOPCon modules. The back-contact design eliminates visible busbars on the front, further reducing hotspot risk near chimneys, dormers, or shade lines.

30-year linear power warranty

The manufacturer guarantees approximately 99% of nominal power in year one and ~87% after 30 years, versus the 25-year linear warranty that is the market standard among tier-1 peers. This extra 5 years of coverage directly boosts the installation's residual value.

Tier-1, bankable manufacturer with a 25-year track record

LONGi Solar has operated since 2000 and is listed as Tier-1 (bankable), which eases project financing through banks and leasing providers and reduces the risk of warranty service continuity compared to less established brands among the peer comparables.

Premium Black aesthetics with no visible busbars

The uniform, deep-black look without visible conductive traces (characteristic of HPBC) is a practical aesthetic advantage for residential prosumers, for whom the visible appearance of the rooftop array is a meaningful selection criterion alongside technical specs.

Trade-offs
Monofacial-only variant

The series is not offered in a bifacial configuration (is_bifacial: false), unlike the growing segment of bifacial modules used in ground-mount, carport, or flat-roof installations with suitable albedo. This limits the series mainly to standard pitched-roof applications, without the additional rear-side energy gain.

Notes from the database
  • Efficiency of 23.5% is 1.0pp above the N-type 450-500W median (22.5%)
  • 235.2 W/m² power density - 10.0 W/m² more than N-type 450-500W median (225.2 W/m²), more power per roof area
  • -0.26%/°C temperature coefficient (median: -0.29%/°C) - retains ~1% more power at high temperatures
  • 21.6 kg weight - 2.1 kg lighter than N-type 450-500W median (23.7 kg), reducing installation effort
  • In the top 5% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 480 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 23.50 % Strong Segment median 22.52%
Vmpp · Impp 33.28 V · 14.43 A Operating point at max power
Voc · Isc 40.29 V · 15.13 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
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 88.8 % Equals 426 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 480 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 LR7-54HVB-480M 480 W 23.50% -0.260 21.6 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +30 W, cooler, +1.5 pp
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +15 W, +1.3 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +25 W, cooler, +1.2 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +10 W, +1.0 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +20 W, cooler, +1.0 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +20 W, +1.0 pp
LR7-54HGBB-440M 440 W 21.60% -0.280 23.6 kg -40 W, hotter, -1.9 pp
LR7-54HGBB-445M 445 W 21.80% -0.280 23.6 kg -35 W, hotter, -1.7 pp
LR7-54HGBB-450M 450 W 22.00% -0.280 23.6 kg -30 W, hotter, -1.5 pp
LR7-54HTH-455M 455 W 22.30% -0.280 21.6 kg -25 W, -1.2 pp, -5 yr warranty
LR7-54HTH-460M 460 W 22.50% -0.280 21.6 kg Hotter, -1.0 pp, -5 yr warranty
LR7-54HTH-465M 465 W 22.80% -0.280 21.6 kg Hotter, -0.7 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 LR7-54HVB panels and does it actually improve performance?
HPBC 2.0 (Hybrid Passivated Back Contact) places all contact electrodes exclusively on the rear side of the cell, completely eliminating metal busbars from the light-absorbing surface. This allows more irradiance to reach the cell while reducing busbar shading losses and carrier recombination. In practice, this translates to module efficiency up to 24.3% and better low-light performance — a tangible advantage in climates like Poland's, where overcast conditions are frequent.
Does the LONGi X10 Premium Black LR7-54HVB perform well under partial shading from chimneys, dormers, or nearby trees?
Yes, the HPBC 2.0 back-contact structure combined with n-type cells significantly reduces the impact of partial shading. Back-contact cells handle uneven irradiance better than conventional PERC modules since the absence of front busbars eliminates cross-shading on the cell. Energy losses near chimneys or dormers can be noticeably lower than with standard modules. For severe shading scenarios, adding power optimizers is still advisable.
What warranty does the LONGi LR7-54HVB come with and what exactly does it cover?
LONGi Solar provides a 25-year product warranty covering material and workmanship defects, plus a 30-year linear power output warranty. The performance warranty allows a maximum 1% degradation in year one, then no more than 0.35% per year — guaranteeing at least 88.9% of rated power after 30 years. This is one of the most favorable linear warranties currently available among residential-grade PV modules.
What efficiency do the LONGi LR7-54HVB panels achieve and how much roof space do I need for a 10 kWp system?
The LR7-54HVB series reaches up to 24.3% module efficiency, placing it among the top commercially available monocrystalline panels. The 495 Wp variant measures 1800 × 1134 mm, so a 10 kWp system requires roughly 20–21 modules, occupying approximately 41–43 m² of roof area — compared to 25–27 older 380–400 Wp panels. That represents a meaningful roof-space saving of up to 15%.
Are the all-black LONGi X10 LR7-54HVB panels suitable for a standard pitched roof and how do they look once installed?
Yes, the X10 Premium Black series is designed for pitched-roof installations. The module measures 1800 × 1134 × 30 mm and weighs 21.6 kg, making it straightforward to handle on standard aluminum racking. The single glass variant is lighter than dual glass and requires no special mounting hardware. The uniform deep-black cells, frame, and backsheet blend seamlessly with dark ceramic tiles or standing-seam metal roofing.
Is the LONGi LR7-54HVB a bifacial panel — does it harvest energy from both sides?
No, the LR7-54HVB is a monofacial module in a single glass configuration — it does not harvest reflected irradiance from the ground. On typical pitched rooftops where the rear of the panel faces battens and roofing material, a bifacial module provides no real energy gain. The single glass monofacial design is lighter, easier to install, and fully adequate for the vast majority of residential rooftop PV systems.
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