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Longi Solar LR7-60HVH-550M
Longi Solar Brand review

LR7-60HVH-550M

550 Wp N-type
ComparePV verdict

Strong in heat, no clear weak spot

Rank 2,603 of 14,005
Compare panels Datasheet PDF
Power (Wp)
550
Weak · bottom 2%
Efficiency (%)
24.40
Strong · top 1%
Density (Wp/m²)
243.7
Strong · top 1%
Temp (%/°C)
-0.260
Strong · top 1%
Weight (kg)
25.0
Strong · 4.5 kg below median
Warranty (yrs)
30
Typical · median 30 yrs

The Longi Solar Hi-MO X10 Scientist LR7-60HVH 535~560M series is designed to maximize energy yield from every square meter - especially in locations with limited roof space or where high power in a compact format is essential. A key feature is the application of back-contact (BC) technology in the enhanced HPBC 2.0 architecture, which translates to better performance under strong sunlight and an attractive, uniform front appearance without visible busbars. The modules utilize N-type cells, which help minimize power losses over time and maintain high efficiency for an extended operational lifespan. An additional benefit is the lower operating temperature, crucial during summer months and on roofs with poor ventilation - more energy reaches the inverter instead of being converted into heat. This series is suitable for residential and commercial installations, as well as projects requiring enhanced mechanical durability and flexible mounting methods while ensuring high reliability.

Ranking

259 panels in the segment N-type 550-600 W
Metric This panel Median Position in segment Overall rank
Module efficiency 24.40% 22.45% Strong · top 1% 99
Power density 243.7 224.5 Strong · top 1% 128
Temperature coefficient -0.260 -0.290 Strong · top 1% 511
Weight per kWp 45.5 52.3 Strong · top 10% 725
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, utility-scale and hot-climate.

Strengths
-0.260 %/°C temperature coefficient

Top 1% of the N-type 550-600 W segment, against a median of -0.290. Ranked 511th in the whole database.

24.40% module efficiency

Top 1% of the N-type 550-600 W segment, against a median of 22.45%. Ranked 99th in the whole database.

243.7 watts per square metre

Top 1% of the N-type 550-600 W segment, against a median of 224.5. Ranked 128th in the whole database.

What owners get
Efficiency clearly above segment average

Module efficiency of 23.7-24.8% (HPBC 2.0 back contact technology, N-type TaiRay cells) is roughly 2-3 percentage points higher than comparable 560 Wp modules (Exiom, Fellow Energy, Premier Energies - all around 21.7%). That's about 14% more power from the same roof area.

Low power temperature coefficient

The Pmax temperature coefficient is -0.26%/°C, meaning less power loss at high operating temperatures than typical TOPCon modules (usually around -0.29 to -0.34%/°C). A real advantage in summer installations and on poorly ventilated pitched roofs.

Clean front aesthetic with no visible busbars

The back-contact design with zero-busbar (0BB) technology eliminates visible metallization grids on the front, giving a uniform, dark appearance - important for residential installations where roof or facade aesthetics matter.

30-year linear power warranty and low degradation

The linear power warranty covers a full 30 years, with degradation of ≤1% in the first year and ≤0.35%/year thereafter - better than the industry-typical 0.4-0.5%/year for PERC/TOPCon modules.

Bankable Tier-1 manufacturer

Longi Solar (founded in 2000) is a Tier-1 manufacturer per BNEF criteria, reducing counterparty risk over the 30-year power warranty horizon.

Trade-offs
Shorter product warranty than market standard

The product warranty is 15 years, while in 2026 most Tier-1 panels (including competing TOPCon lines) offer 25 years as standard. The gap between the 15-year product warranty and 30-year power warranty may raise customer questions.

No bifacial variant available

The series is mono-facial only (is_bifacial: false), while some comparable 560 Wp modules (e.g., Premier Energies, dual-glass bifacial) offer additional albedo-driven yield - that option is not available here.

Limited field track record for BC technology

The HPBC 2.0-based series launched in 2024 - compared to mature PERC/TOPCon technologies, long-term field data is more limited, even though back-contact technology itself is no longer experimental.

Notes from the database
  • Efficiency of 24.4% is 1.9pp above the N-type 550-600W median (22.4%)
  • Power density of 243.7 W/m² packs 19.2 W/m² more into the same footprint vs N-type 550-600W median (224.5 W/m²)
  • At -0.26%/°C (vs median -0.29%/°C), loses ~1% less power in hot conditions
  • At 25.0 kg, this panel is 4.5 kg lighter than N-type 550-600W median (29.5 kg) - easier handling during installation
  • #99 for efficiency, #511 for temperature performance out of 14005 panels

Specifications

Open datasheet PDF
Nominal power (Pmax) 550 Wp Nameplate at 1000 W/m², 25 °C
Module efficiency 24.40 % Strong Segment median 22.45%
Vmpp · Impp 37.31 V · 14.74 A Operating point at max power
Voc · Isc 45.08 V · 15.45 A Sizes the string length
Max system voltage 1500 V Longer strings than 1000 V modules
Dimensions 1990×1134×30 mm · 2.26 m² of roof
Weight 25.0 kg Strong Strong · 4.5 kg below median
Cells 120 · N-type Monocrystalline
Coefficient Pmax -0.260 %/°C Strong top 1% 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 489 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 550 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 LR7-60HVH-550M 550 W 24.40% -0.260 25.0 kg You are here
LR7-54HJD-510M 510 W 25.00% -0.240 23.5 kg -40 W, cooler, +0.6 pp
LR7-60HVH-560M 560 W 24.80% -0.260 25.0 kg +10 W, +0.4 pp
LR7-54HJD-505M 505 W 24.70% -0.240 23.5 kg -45 W, cooler, +0.3 pp
LR7-60HVH-555M 555 W 24.60% -0.260 25.0 kg +0.2 pp
LR7-54HJD-500M 500 W 24.50% -0.240 23.5 kg -50 W, cooler, lighter
LR7-60HVHL-535M 535 W 23.70% -0.260 16.3 kg -15 W, lighter, -0.7 pp
LR7-60HVH-540M 540 W 23.90% -0.260 25.0 kg -10 W, -0.5 pp
LR7-60HVH-545M 545 W 24.20% -0.260 25.0 kg Very close match
JAT60S40-540/LR 540 W 24.40% -0.260 23.5 kg -10 W, lighter
GK-5-60HG-540M 540 W 24.40% -0.260 23.3 kg -10 W, lighter
JKM545-54QL6-DV-F1-EU 545 W 24.27% -0.260 27.5 kg Heavier

Found 86 panels of the same or similar size to this one, within ±10 mm. See them here Found 94 panels of the same or similar size to this one, within ±25 mm. See them here Found 588 panels of the same or similar size to this one, within ±50 mm. See them here Found 1466 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 Scientist panels and is it worth the premium?
HPBC 2.0 (High-Performance Back Contact) relocates all electrical contacts to the rear of the module, leaving the entire front surface available for light absorption — no busbars blocking sunlight. This enables module efficiency up to 24.8%. For homeowners it means more energy from the same roof area and a clean, uniform appearance with no visible silver lines on the front glass.
What warranties come with the LONGi Hi-MO X10 Scientist LR7-60HVH 535–560M?
LONGi provides a 15-year product warranty covering materials and workmanship, plus a 30-year linear power warranty. After 30 years the module retains at least 88.85% of its rated output. Annual power degradation beyond year one is capped at 0.35% — among the lowest in the industry for mass-production back contact modules.
How do the LONGi Hi-MO X10 Scientist panels perform in hot summer conditions?
The power temperature coefficient is -0.26%/°C, lower than standard PERC modules (-0.34%/°C). This means less output loss during heat waves. On rooftops with limited airflow the difference can add up to several percentage points of extra energy over a summer season — a meaningful gain in Central European climates with increasingly hot summers.
Are the LONGi Hi-MO X10 LR7-60HVH 560W panels suitable for a pitched roof with limited space?
Yes — the Hi-MO X10 Scientist series is designed specifically for space-constrained installations. At 1990×1134×30 mm and approximately 25 kg, the module is compatible with standard pitched-roof racking systems. With up to 560 Wp and 24.8% efficiency it delivers one of the highest energy yields per square meter available in its class.
How much does the LONGi Hi-MO X10 Scientist degrade over a 30-year lifespan?
Per the datasheet, first-year degradation is no more than 1% and subsequent annual degradation is capped at 0.35%. At the end of year 30 the module still delivers at least 88.85% of nameplate power. This outperforms conventional PERC panels, which typically carry a linear degradation rate of 0.45–0.55% per year.
Is the LONGi Hi-MO X10 Scientist LR7-60HVH a bifacial module?
No — the Hi-MO X10 Scientist LR7-60HVH 535–560M is a monofacial module that collects energy from the front surface only. Rather than relying on bifacial gain, LONGi maximized front-side conversion using HPBC 2.0 back contact architecture and N-type cells. The installation does not require a reflective ground surface or additional rear clearance for reflected irradiance.
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