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Manufacturer review

Longi Solar panels, read off the datasheets

LONGi Green Energy Technology Co., Ltd. is a world-leading solar technology company that manufactures monocrystalline silicon wafers and modules. The company is committed to providing high-efficiency and reliable clean energy solutions for large-scale power plants, various industries, and households. LONGi aims to...

Everything below is computed from those 255 datasheets: no score out of ten, no ranking of brands against each other, and nothing a manufacturer can pay to change. Where Longi Solar does not publish a figure, it is left out of the average rather than assumed.

Panels
255
models in the database
Average efficiency
22.6%
across the catalogue
Best efficiency
25.0%
their strongest module
Power range
100-670 Wp
smallest to largest
Bifacial share
40%
101 dual-sided models
Average warranty
28 years
guaranteed output term
01

The top of the range

The leaders of Longi Solar's own catalogue on the two figures a specification sheet leads with. Neither is a verdict: the most efficient module in a range is rarely the one that suits a given roof.

Most efficient module efficiency
1 LR7-54HJD-510M Monocrystalline bifacial 510 Wp 25.0% 2 LR7-72HVHF-670M Monocrystalline 670 Wp 24.8% 3 LR7-60HVH-560M Monocrystalline 560 Wp 24.8% 4 LR7-60HVHL-560M Monocrystalline 560 Wp 24.8% 5 LR8-66HYD-670M Monocrystalline bifacial 670 Wp 24.8%
Sort the whole catalogue by efficiency
Highest power nameplate output
1 LR7-72HVHF-670M Monocrystalline 24.8% 670 Wp 2 LR8-66HYD-670M Monocrystalline bifacial 24.8% 670 Wp 3 LR7-72HVH-670M Monocrystalline 24.8% 670 Wp 4 LR7-72HVHF-665M Monocrystalline 24.6% 665 Wp 5 LR7-72HVDF-665M Monocrystalline bifacial 24.6% 665 Wp
Sort the whole catalogue by power
02

By what the array is for

Three cuts of the same catalogue, each ordered by efficiency inside its band. An empty column means the brand does not build for that case.

For a house roof 380-460 Wp
1 LR5-54HTH-455M Monocrystalline 455 Wp 23.3% 2 LR5-54HTB-450M Monocrystalline 450 Wp 23.0% 3 LR5-54HTH-450M Monocrystalline 450 Wp 23.0% 4 LR5-54HTB-445M Monocrystalline 445 Wp 22.8% 5 LR5-54HTH-445M Monocrystalline 445 Wp 22.8%
For a commercial array 500 Wp and up
1 LR7-72HVHF-670M Monocrystalline 670 Wp 24.8% 2 LR8-66HYD-670M Monocrystalline bifacial 670 Wp 24.8% 3 LR7-72HVH-670M Monocrystalline 670 Wp 24.8% 4 LR7-72HVHF-665M Monocrystalline 665 Wp 24.6% 5 LR7-72HVDF-665M Monocrystalline bifacial 665 Wp 24.6%
For a ground mount dual-sided
1 LR7-54HJD-510M Monocrystalline bifacial 510 Wp 25.0% 2 LR8-66HYD-670M Monocrystalline bifacial 670 Wp 24.8% 3 LR7-54HJD-505M Monocrystalline bifacial 505 Wp 24.7% 4 LR7-54HJBB-505M Monocrystalline bifacial 505 Wp 24.7% 5 LR8-66HVD-665M Monocrystalline bifacial 665 Wp 24.6%
03

What the catalogue is made of

Cell technology across the market

Shares are of the 255 modules in the database, counted once each. A power ladder of one module counts as its rungs, which is why a large catalogue is not the same as a wide one.

Cell technology share of the catalogue
N-type 42.0% 107 Unknown 21.6% 55 PERC 20.0% 51 Back Contact 16.5% 42
N-type accounts for 42.0% of the catalogue - 107 of 255 modules.
Efficiency spread share of the catalogue
<20% 1.2% 3 20-21% 10.2% 26 21-22% 18.4% 47 22-23% 27.5% 70 23%+ 42.7% 109
04

Strengths and gaps

Both lists are derived from the figures above rather than written about the brand. A gap here is a gap in what is published, which is not always a gap in what is built.

What this catalogue is good at
  • Extensive portfolio of 255 panels across multiple series
  • Tier 1 bankable manufacturer - recognized by major financial institutions
  • High-efficiency panels available (up to 25.0%)
  • Strong warranty coverage averaging 28 years
  • High-power panels available (up to 670W) for commercial applications
  • Established manufacturer with 26+ years of experience
  • Large-scale production capacity of 85-90 GW
Where it is thin
  • Limited adoption of latest cell technologies (TOPCon/HJT)
05

In short

Longi Solar: Longi Solar is an industry leader in efficiency, offering 255 panels suitable for both residential and commercial buyers. With an average efficiency of 22.6% and top models reaching 25.0%, their panels deliver competitive performance. As a Tier 1 bankable manufacturer, they offer strong financial backing and long-term reliability.
Common questions
Is Longi Solar a good solar panel manufacturer?
Longi Solar offers 255 solar panel models with an average efficiency of 22.6%. They are a Tier 1 bankable manufacturer, recognized by major financial institutions for reliability. Check their full panel lineup on ComparePV to find the best model for your needs.
What types of solar panels does Longi Solar make?
Longi Solar manufactures panels ranging from 100W to 670W, covering both residential and commercial applications. Their portfolio includes N-type (42%), Unknown (22%), PERC (20%) cell technologies.
How efficient are Longi Solar solar panels?
Longi Solar panels have an average efficiency of 22.6%, with their most efficient model reaching 25.0%. This puts them among the industry leaders in the current market.
Does Longi Solar make bifacial solar panels?
Yes, Longi Solar offers 101 bifacial panels, representing 40% of their portfolio. Bifacial panels can generate additional energy from the rear side, making them ideal for ground-mounted systems.
What warranty does Longi Solar offer on their solar panels?
Longi Solar panels come with an average performance warranty of 28 years. This warranty guarantees that the panels will maintain a specified level of power output over time, protecting your investment against degradation beyond normal levels.
Are Longi Solar panels good for residential use?
Longi Solar offers panels in the residential-friendly 380-460W range. For home installations, look for models with high efficiency and compact dimensions to maximize power from limited roof space. Browse their full lineup on ComparePV to filter by power range and specifications.
06

Compared with

Build your own

A brand comparison weighs the two catalogues against each other - what each builds, at what efficiency, and how deep the range goes.

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