These Longi solar panel reviews comprehensively evaluate both the strengths and weaknesses of the brand. Despite only arriving in Australia in 2017, Longi has rapidly become a top seller. Notably, although it is a newer brand, Longi achieved trusted status in 2020, following SunPower and LG.
A Quick Review: The Longi Company History
Founded in 2000, by 2007 Longi boasted 100 tonnes of mono-silicon production capacity, enough for at least one gigawatt of solar panels. Rapid growth followed, with Longi hitting an estimated 18GW production capacity in 2020, making it the biggest solar panel manufacturer globally.
As a result, Longi’s manufacturing plants successfully expanded into China, Vietnam and Malaysia. Longi solar panels then entered the Australian market in 2017 and swiftly gained popularity as a top seller. Remarkably, Longi was the sole brand designated AAA-rated by the ModuleTech Bankability Rating in its Q3 2020 ranking.
Longi also maintains an office in Sydney, a crucial factor to consider. This eliminates potential international frustrations and gives customers a national support helpdesk for emergencies. In the case of warranty claims, the Australian team promptly addresses issues within the country. If you want to compare options, our Canadian Solar panel reviews cover another popular brand.
Reviewing Solar Panels by Longi
Longi Hi-Mo 3
The Longi Hi-Mo 3 series is a solid starter solar panel for homeowners looking to reduce the cost of their energy bills.
Longi Hi-Mo 3 key selling points
- Sizes 305W-325W
- Half Cut Cells
- Conversion Efficiency 19.6%
- Monocrystalline PERC
- 6 BusBar
- 10-Year Product Warranty
- 25-Year Performance Warranty
- Fluoride back-sheet
- Solid PID Resistance
- Higher Energy Yield
- Reduced Hot Spot Risk
- Lower Operational Current
- Reduced Resistive Loss
- Temperature Coefficient
- First-Year Power Degradation <2%
Longi Hi-MO 4
The Hi-Mo 4 is a great solar panel for the price. It offers higher conversion efficiency, high performance, an excellent warranty and an innovative design.
Longi Hi-MO 4 key selling points
- Sizes 350W-380W
- Half Cut Cells
- Parallel Connection Design
- Conversion Efficiency of 20.9%
- Monocrystalline PERC
- Fluoride back-sheet
- Positive Power Tolerance (0~+5W)
- Higher Energy Yield
- Lower Operating Temperature
- Reduced Resistive Loss
- Lower Operating Current
- Reduced Hot Spot Risk
- 12-Year Product Warranty
- 25-Year Performance Warranty
Longi Hi-Mo X
Longi Hi-MO X key selling points
- Sizes 340W-360W
- Mono Cells
- High Strength Frame
- Conversion Efficiency of 20.6%
- Positive Power Tolerance (0~+5W)
- Sleek Appearance (No Cell Gaps)
- Reduced BOS Cost
- Longer Strings
- Reduced Cable Usage
- Monocrystalline PERC
- Solid PID Resistance
- 12-Year Product Warranty
- 25-Year Performance Warranty
Longi Solar Panel Reviews
Price
These panels are well-priced and offer great value. Delivering a high-quality product at an affordable price is what makes them stand out: in effect, you get mono-crystalline panels at a polycrystalline price. For a sense of why estimates differ between suppliers, see our guide on why solar quotes are so different.
Warranty
Longi stands apart from other brands with its warranty offering. The company provides a 12-year product warranty and a 25-year performance warranty. It also guarantees a performance rate of 84.8% after 25 years, unlike other manufacturers that typically offer 75-80%. To make the most of any cover, read our tips on how to secure a solar system warranty.
Performance
The performance level of Longi solar panels is exceptionally high, backed by a robust 25-year performance warranty that reflects the company’s confidence. Longi manufactures only mono-crystalline solar panels, a material known for superior performance, which signals its commitment to delivering high-performance products.
Final Verdict
With over a decade of experience, Solar Air Energy has successfully installed thousands of Longi solar panels and received no complaints. Because of this, we wholeheartedly recommend these panels to our customers, given their exceptional quality at affordable prices.
Connect with our experienced solar installers and request a free quote anytime. Please refer to our reviews — our track record speaks for itself!