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Longi Solar Brand review

LR7-54HGBB-450M

450 Wp N-type Bifacial 80%
ComparePV verdict

Strong in heat, modest efficiency

Rank 6,839 of 14,005
Compare panels Datasheet PDF
Power (Wp)
450
Weak · bottom 8%
Efficiency (%)
22.00
Weak · bottom 16%
Density (Wp/m²)
220.5
Weak · bottom 21%
Temp (%/°C)
-0.280
Strong · top 21%
Weight (kg)
23.6
Typical · median 23.7 kg
Warranty (yrs)
30
Typical · median 30 yrs

The Longi Solar Hi-MO 7 LR7-54HGBB 440-460M series was designed for maximum energy production from the same roof or structure surface - with no compromises on durability. The key advantage here is the double-glass construction (glass-glass), which improves resistance to moisture and temperature changes, while simultaneously stabilizing the module's performance over a long lifespan. This is a real benefit for investors looking to minimize the risk of yield losses and claims.

The modules utilize n-type cells, resulting in lower degradation over time and better performance under demanding conditions. Additionally, this is a bifacial solution - the panel can use reflected light from the ground, so on light-colored roofs, ground-mounted installations, or carports, it can achieve higher yields without increasing the number of modules.

The series is particularly suitable for single-family homes and businesses, where the aesthetic appeal of the black design and predictable energy production under various weather conditions matter.

Ranking

301 panels in the segment N-type 450-500 W
Metric This panel Median Position in segment Overall rank
Module efficiency 22.00% 22.52% Weak · bottom 16% 6,517
Power density 220.5 225.2 Weak · bottom 21% 6,236
Temperature coefficient -0.280 -0.290 Strong · top 21% 1,309
Weight per kWp 52.4 49.5 Typical 5,978
Performance warranty 30 yrs 30 yrs Typical 21
Colour key Strong - top 25% Typical - middle 50% Weak - bottom 25%

Signals from the data

6 positive · 4 caution
Best for

Residential and commercial.

Not ideal for

Tight roof space and roofs where every square metre has to count.

Strengths
-0.280 %/°C temperature coefficient

Top 21% of the N-type 450-500 W segment, against a median of -0.290.

Watch-outs
22.00% module efficiency

Bottom 16% of the N-type 450-500 W segment, against a median of 22.52%.

220.5 watts per square metre

Bottom 21% of the N-type 450-500 W segment, against a median of 225.2.

What owners get
Glass-glass double-glass build

The glass-glass construction improves resistance to moisture ingress and thermal cycling, reducing the risk of delamination and long-term power loss compared to typical glass-backsheet designs.

N-type cells with low degradation

N-type cell technology eliminates the LID effect common in older PERC cells and delivers more stable performance at high temperatures, translating into higher real-world annual yield, especially during peak summer months.

~80% bifaciality boosts yield

A bifaciality factor of roughly 80% lets the module capture light reflected off the ground - on bright roofs, ground-mount installations, and carports this can add a few extra percentage points of energy without adding more panels.

30-year power warranty at 87.4%

The manufacturer guarantees at least 87.4% of rated power after 30 years, alongside a 25-year product warranty - a longer linear power warranty term than the standard 25 years offered by many competitors in this segment.

Tier-1 bankable manufacturer

LONGi Solar is a Tier-1 (bankable) manufacturer operating since 2000, which simplifies project financing with banks and insurers and reduces long-term counterparty risk related to warranty guarantor solvency.

Trade-offs
Series discontinued

The Hi-MO 7 LR7-54HGBB 440-460M series has been discontinued (end of production in 2025), superseded by the newer Hi-MO 9 generation (up to 24.8-25.2% efficiency). This means limited spare parts availability and potentially longer turnaround for warranty claims.

Efficiency below top-tier peers

Maximum efficiency of 22.5% trails comparable Tier-1 modules at the same 460 Wp power class, such as Phono Solar Draco N-TOPCon (23.02%) and SunKean SKT440-460M12-96D4 (23.02%) - meaning slightly lower yield per unit of roof area.

Notes from the database
  • Efficiency of 22.0% is 0.5pp below the N-type 450-500W median (22.5%)
  • At 220.5 W/m², this panel generates 4.7 W/m² less per unit area than N-type 450-500W median (225.2 W/m²)
  • At -0.28%/°C, hot weather performance is typical for N-type 450-500W panels
  • Bifaciality factor of 80% can add 4-12% extra yield with reflective mounting surface
  • In the top 47% for efficiency among all N-type panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 450 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 22.00 % Weak Segment median 22.52%
Vmpp · Impp 33.22 V · 13.55 A Operating point at max power
Voc · Isc 39.70 V · 14.37 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 23.6 kg Typical Typical · median 23.7 kg
Cells 108 · N-type Monocrystalline
Bifaciality 80 % Rear output as a share of front
Coefficient Pmax -0.280 %/°C Strong top 21% of its segment
Coefficient Voc · Isc -0.230 · 0.045 %/°C
NOCT 45 °C At 800 W/m², 20 °C ambient
Product warranty 25 years Hardware defects only
Performance warranty 30 years Typical median 30 yrs · median 30 yrs
End-of-warranty output 87.4 % Equals 393 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 450 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
-
With bifacial gain
-

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
-
Bifacial gain
Rear gain over light concrete: -
-

Model: bifaciality × albedo × 0.6 view factor. A first-order estimate, not a yield simulation.

Filter these
Size
Panel Power Eff. Temp. Weight Difference
Longi Solar LR7-54HGBB-450M 450 W 22.00% -0.280 23.6 kg You are here
AIKO-A495-MCE54Mw 495 W 24.80% -0.260 21.0 kg +45 W, lighter, +2.8 pp
AIKO-A490-MCE54Mw 490 W 24.50% -0.260 21.0 kg +40 W, lighter, +2.5 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg +50 W, cooler, +2.5 pp
CIPRO-TN9C54M-500W 500 W 24.50% -0.260 21.4 kg +50 W, lighter, +2.5 pp
GK-3-54HGb-500M 500 W 24.50% -0.260 21.4 kg +50 W, lighter, +2.5 pp
GCL-NR10R/54BGDF 500 W 24.50% -0.260 24.6 kg +50 W, cooler, +2.5 pp
LR7-54HGBB-440M 440 W 21.60% -0.280 23.6 kg -10 W, -0.4 pp
LR7-54HGBB-445M 445 W 21.80% -0.280 23.6 kg Very close match
LR7-54HTH-455M 455 W 22.30% -0.280 21.6 kg Lighter, +0.3 pp, -5 yr warranty
LR7-54HTH-460M 460 W 22.50% -0.280 21.6 kg Lighter, +0.5 pp, -5 yr warranty
LR7-54HTH-465M 465 W 22.80% -0.280 21.6 kg Lighter, +0.8 pp, -5 yr warranty
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg +60 W, cooler, +3.0 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg +55 W, cooler, +2.7 pp

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
Is the Longi Solar Hi-MO 7 LR7-54HGBB 440–460M series still available for purchase?
The Hi-MO 7 LR7-54HGBB 440–460M series has been discontinued by Longi Solar. New orders directly from the manufacturer are no longer fulfilled, and availability through distributors is limited to remaining stock. If you need the same N-type cell technology and glass-glass construction, ask your distributor about current Tier 1 alternatives from Longi or another manufacturer.
What warranty does the Longi Hi-MO 7 LR7-54HGBB carry and what does it cover?
Longi provides a 25-year product warranty covering materials and workmanship, plus a 30-year linear power output warranty guaranteeing at least 87.4% of rated power at year 30. First-year degradation is capped at 2%. This is one of the longest power warranty schedules available in the residential and commercial PV segment.
What does bifacial technology mean in the Hi-MO 7 LR7-54HGBB and how much extra energy can I expect?
Bifacial modules generate power from both the front and rear surfaces by capturing light reflected off the ground or rooftop surface. Under typical rooftop conditions, the bifacial gain ranges from 5% to 15% compared to a monofacial module. The highest gains come from installations over light-colored membranes, white gravel, or ground-mounted systems with adequate clearance below the module.
How do the Longi Hi-MO 7 LR7-54HGBB panels perform in winter and at low temperatures?
The N-type cells used in the Hi-MO 7 series have a low temperature coefficient of -0.28%/°C, meaning smaller power losses during hot summers and better performance on cold, sunny winter days compared to legacy PERC technology. Frost alone does not harm the modules, and the glass-glass construction improves moisture resistance and tolerance to thermal cycling — an important advantage in continental climates.
What advantage does the glass-glass construction of the Hi-MO 7 offer over a standard backsheet module?
Standard modules use a polymer backsheet that is susceptible to micro-cracks and moisture ingress over time. The glass-glass design replaces the backsheet with a second glass layer, eliminating those failure points and significantly reducing the risk of moisture-induced degradation (PID) and rear-side hail damage. The result is more stable power output throughout the entire 30-year power warranty period.
Are the Longi Hi-MO 7 LR7-54HGBB 460W panels suitable for a pitched residential roof?
Yes, the 1800×1134×30 mm footprint and approximately 23.6 kg weight are within the range handled by standard rooftop mounting systems. A 460 Wp rating lets you maximize energy yield from limited roof area. Note that glass-glass modules are slightly heavier than backsheet equivalents, so a certified installer should assess whether the roof structure and racking can support the load before proceeding.
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