LONGi Solar Panel review

When you are thinking to get yourself a solar system, there is always a dilemma between what to choose and what not to. Which brand will be suitable for your needs and which will be affordable too. To answer all these questions, you refer to the reviews of each brand to find out more about them and conclude your decision about it.

Today we will be reviewing and giving you our honest opinion about the LONGi solar panels. Stick to the end, and you will find out why or why not these panels are worth your money.

History of LONGi Solar panels

Established in 2000, ‘LONGi Green Energy Technology’, formerly known as ‘Xi’an LONGi Silicon materials Corporation’, is a well-known solar panel manufacturer. Their headquarters are located in Xi’an, Shaanxi, China, but that doesn’t mean it lacks a global presence. LONGi solar alone fulfils a quarter of the world’s solar demands, which shows that the company is incredibly trusted and recognized globally. The LONGi solar is a subsidiary brand in the name of LONGi Green Energy Technology which do their business in many big countries like South Korea, France, Japan, United States of America and Australia.

All of LONGi solar manufacturing is done in their plants located solely in China. Knowing this might make you think about the stereotype we have developed over Chinese manufacturers, but LONGi can easily change that for you if you give it a try. Due to a not so good reputation of Chinese brands in Australia, Australians tend to think that every Chinese product and brand will provide them pretty low-quality products, which will cause them problems in the long run, but that’s not the case with LONGi. As we told you that it fulfils a quarter of the global solar demands, they have a proven track record of quality and reliability. Also, to prove that point, LONGi solar has won numerous awards in its quality product lineup. These include awards for the highest efficiency found in any solar panel, proving how well their products perform.

After knowing the History of LONGi Solar panels and LONGi solar as a brand, let’s individually discuss their product lineup and see if there is anything worth noticing.

LONGi Solar Cell Technologies

Before discussing the range of solar panels LONGi Solar has to offer, let’s first briefly discuss what goes into the process of manufacturing these solar panels, which makes them the most efficient solar panels in the entire world.

The secret behind the impressive efficiency of LONGi solar panels is that the company combines three of the most innovative methods of manufacturing solar panels into its modules. These methods are namely the PERC cell technology, half-cut cells technology, and the Bifacial Technology. Let’s talk about them briefly

Firstly the PERC technology uses PERC cells in combination with laser grooving and passivated rear sides, which all work together to provide better efficiency to the panels. The success of this technology can be seen in the no. of awards won by it. It got the top spot in the Energy Yield Simulation for two years straight, i.e. 2017 and 2018. Recently it won the TÜVRheinland’s Outdoor Energy award for the maximum yield of mono facial modules.

Bifacial technology is our favourite technology used by LONGi Solar to give their solar panels maximum efficiency. The panels which use the Bifacial Cell technology are incorporated with a grid that uses Artificial intelligence and is transparent. This makes the panels transparent from either side, which gets the maximum light possible to the panels for them to be converted to energy, increasing the panel efficiency.

Last but not least, the half-cut technology is rather complex to be described here, and honestly, it’s not even needed for you to understand it. What you should know is the usage of half-cut technology in the LONGi solar panels make them generate more power than their alternatives, and this technology also becomes a factor in increasing the panel’s reliability and longevity.

All of these technologies are packed in LONGi’s solar panels, which make it the world’s most efficient one. These technologies also become a significant factor in increasing the reliability and longevity of the panels.

LONGi Solar Range of Panels

Here we list out the solar panels offered by LONGi Solar in the Australian market.

  • LONGi LR4-72HPH (420W – 455W) Mono
  • LONGi LR4-72HBD (415W – 455W) Bifacial
  • LONGi LR4-60HPH (350W – 380W) Mono
  • LONGi LR4-60HPB (340W – 365W) Mono, All Black

We will explain each of these solar panels and their key features below in the Article

LONGi LR4-72HPH (420W – 455W) Mono

The LONGi LR4-72HPH (420W – 455W) Mono comes under LONGi’s residential solar panel’s options. This Solar Panel operates in 420 to 450 watts and comes with a monocrystalline cell layout. All of LONGi’s solar panels come with a monocrystalline cell layout which makes them an expert in it. This panel have a maximum efficiency output of 21.2%, and the company claims that the power degradation will be less than 2% in the first year and 0.5% in the coming years. It also comes with a 12 years standard warranty for material and processing and a 25-year warranty for linear power output. This panel incorporates half-cell technology, which makes it operate at a relatively low temperature than its alternatives.

Key Features of LONGi LR4-72HPH mono

  • Perfect for residential use
  • Maximum Efficiency output of 21.2%
  • The company claims to have a first-year power degradation of less than 2%
  • The coming years after it, i.e. the second year to the 25th year, will show only a 0.5% power degradation rate
  • This panel comes integrated with a half cell technology which increases the panel’s efficiency and reliability
  • It has a 2mm of tempered glass coating
  • It offers a 12-year processing warranty and a 12-year material warranty
  • It also comes with a 25-year warranty for linear power output
  • Its kerb weight is 23.3 Kg, and its dimensions are 1755x108x35 mm

LONGi LR4-72HBD (415W – 455W) Bifacial

The LONGi LR4-72HBD (415W – 455W) comes with bifacial technology, which increases the panel output and efficiency. The panels come with a maximum power efficiency of almost 21%, and the company claims that it will degrade by less than 2% in the first year and show a linear degrade of a mere 0.4% for the coming 25 years. This also comes with a material warranty of 12 years and a processing warranty of 12 years. It also comes with a 30-year warranty for linear power output, which is excellent for this solar panel. To our surprise, it also carries half cell technology along with a facility of 70%, which makes it a perfect combination for efficiency and reliability. Both of the glasses on either side gets a 2mm coating of tempered glass, which makes it stand tough in extreme weather conditions like the one we experience in Australia.

Some Key features of LONGi LR4-72HBD (415W – 455W) Bifacial

  • It has a 12-year material and processing warranty which assures the customer of its reliability
  • It also carries a 30-year linear power output warranty.
  • It has both the half cell technology and the bifacial technology in one unit, increasing its reliability and efficiency.
  • Its bifaciality is somewhere around 70%
  • Its power degradation is less than 2% in the first year and 0.45% for the coming 25 years
  • Its peak panel efficiency is around 21%
  • It is covered in 2mm tempered glass on either side
  • Its weight is 27.5 Kg

LONGi LR4-60HPH (350W – 380W) Mono

The LONGi LR4-60HPH (350W – 380W) Mono features a monocrystalline panel, and it operates in the power range of 350 to 380 watts. It features a maximum panel efficiency of 20.9%, and the power degradation annually is no more than 0.55%. It comes bundled with half cell technology which helps to increase the efficiency and reliability of the product. The half cell technology also helps in reducing the operating temperature in LONGi Solar Panels. They come with a standard 12-year manufacture and process warranty, and they have a 25-year warranty for a linear power output throughout its life. It weighs around 19.5 kg

Some Key Features of LONGi LR4-60HPH (350W – 380W) Mono

  • It comes with a monocrystalline panel
  • It has an operational range of 350 to 380 watts
  • It features a peak efficiency of 20.9%
  • It comes with a 12-year standard warranty on manufacturing and processing, and it also packs a 25 years guarantee of linear power output.
  • Its power degradation rate is less than 2% in the first year and not more than 0.55% in the coming 25 years
  • It weighs about 19.5 kgs
  • It comes with the half cell technology that helps to lower the panels average operational temperature
  • LONGi LR4-60HPB (340W – 365W) Mono, All Black

The LONGi LR4-60HPB (340W – 365W) Mono, All Black comes with an all-black design which may appeal to some people. Its design looks great when installed on a rooftop, and the all-black colour adds a sophisticated touch to the look and feel of the property. The features of the LONGi LR4-60HPB (340W – 365W) Mono are similar to LONGi’s other models in this range (as explained above). The thing which is different here is the ten years of standard warranty instead of the 12 years which you get on other panels of the company. Also, the peak efficiency is reduced to 19.2% in this model.

Some Key Features of LONGi LR4-60HPB (340W – 365W)

  • An All black design makes the look of the panel very pleasing and industrial
  • They tend to add a sophisticated touch to the property on which they are installed
  • The Peak Efficiency is 19.2%
  • Its power degradation rate is less than 2% in the first year and not more than 0.55% in the coming 25 years
  • It weighs about 19.5 kgs
  • It comes with an aluminium frame which helps in the reliability of the product.
  • It comes with a half-cut cell for low operational temperature

Why should you consider LONGi Solar panels?

  • LONGi Solar comes under the Bloomberg Tier-1 Ranking
  • LONGi Solar is a top former in PV Evolution labs
  • All of LONGi Solar panels are affordable and offer better value for money than their alternatives
  • No LONGi Solar Panel has a peak efficiency of less than 19.2%
  • All solar modules offered by LONGi Solar comes with a generous warranty period of not less than ten years which makes them reliable
  • They have a library of options of technologies to choose from while getting solar panels from them
  • They offer technologies like Bifacial Cell, PERC Cell and Half cell technology
  • LONGi Solar only Manafacture monocrystalline solar panels, which make them an expert in the mono market, and we can safely say that they develop the best monocrystalline solar panels in the market.
  • Their panels are optimum for residential usage
  • Their Customer Service is around the globe, and they have local offices in Australia itself


LONGi Solar Panels are undoubtedly worth considering if you are looking for a value for money option for your solar installation. The unique selling point of these panels is the efficiency and reliability they offer at such a low budget. LONGi Solar comes under the Bloomberg Tier-1 Ranking, and it is also a top former in PV Evolution labs. They offer Bifacial Cell, PERC Cell and Half cell technology which is hard to find in this price range. Also, their panels are optimum for residential usage.

To conclude it all, If you are looking to get a solar system for your home and don’t want to spend a significant sum of money on it, you should seek LONGi Solar panels. They will offer you high performance, high reliability and excellent quality at a low price. To us, they are the most value for money option in the market.

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About Solar: According to the Australian Energy Council report, around 15% of Australian household has installed a solar system at their home. This shows that the solar revolution has begun in Australia. That means around 1.6 million homes have been producing their own solar energy and reducing carbon footprint & electricity bills. For the last couple of years, you […]

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