Mid-Range★★★★4.3/5

LONGi Solar Panels

4 panel models | Up to 22.8% efficiency | China

22.8%

Top Efficiency

580W

Max Wattage

25yr

Performance Warranty

2000

Founded

About LONGi

LONGi Green Energy Technology is the world's largest manufacturer of monocrystalline silicon wafers and one of the top solar module producers globally. The company has been instrumental in driving down solar costs through vertical integration and technological innovation, with their Hi-MO series setting industry benchmarks.

Pros

World leader in monocrystalline silicon technology
Vertically integrated supply chain ensures quality control
Hi-MO series offers excellent power output and efficiency
Massive R&D investment drives continuous innovation

Cons

Primarily focused on large-format commercial/utility modules
US residential presence still growing compared to established brands
Some geopolitical supply chain concerns

LONGi Solar Panel Models

Model	Wattage	Efficiency	Cell Type	Price/Watt	Warranty
Hi-MO 7 LR5-54HTH	580W	22.8%	HJT	$0.55-$0.85	15/25yr
Hi-MO 6 LR5-54HPH	445W	22.3%	Monocrystalline	$0.50-$0.82	15/25yr
Hi-MO X6 LR5-72HPH	570W	22%	Monocrystalline	$0.48-$0.78	15/25yr
Hi-MO 5 LR5-72HBD	540W	21.1%	Monocrystalline	$0.42-$0.70	12/25yr

Detailed Specifications

Hi-MO 7 LR5-54HTH

Wattage

580W

Efficiency

22.8%

Cell Technology

HJT

Dimensions

92.2 x 44.8 x 1.4 in

Weight

65.5 lbs

Temperature Coefficient

-0.26%/°C

Degradation Rate

0.35%/year

Product Warranty

15 years

Performance Warranty

25 years

Hi-MO 6 LR5-54HPH

Wattage

445W

Efficiency

22.3%

Cell Technology

Monocrystalline

Dimensions

75.6 x 41.5 x 1.4 in

Weight

47.4 lbs

Temperature Coefficient

-0.34%/°C

Degradation Rate

0.4%/year

Product Warranty

15 years

Performance Warranty

25 years

Hi-MO X6 LR5-72HPH

Wattage

570W

Efficiency

22%

Cell Technology

Monocrystalline

Dimensions

92.2 x 44.8 x 1.4 in

Weight

64.2 lbs

Temperature Coefficient

-0.34%/°C

Degradation Rate

0.4%/year

Product Warranty

15 years

Performance Warranty

25 years

Hi-MO 5 LR5-72HBD

Wattage

540W

Efficiency

21.1%

Cell Technology

Monocrystalline

Dimensions

89.4 x 44.8 x 1.4 in

Weight

62.6 lbs

Temperature Coefficient

-0.35%/°C

Degradation Rate

0.45%/year

Product Warranty

12 years

Performance Warranty

25 years

LONGi Solar Panels FAQ

LONGi is a mid-range-tier solar panel manufacturer headquartered in China, rated 4.3/5 by industry experts. Their panels offer up to 22.8% efficiency with 25-year performance warranties. World leader in monocrystalline silicon technology.

LONGi solar panels range from $0.42 to $0.85 per watt. For a typical 6kW system, that's approximately $3,300 to $5,100 before the 30% federal tax credit.

The most efficient LONGi panel is the Hi-MO 7 LR5-54HTH at 22.8% efficiency and 580W. Higher efficiency panels are ideal for homes with limited roof space.

LONGi offers 15-year product warranties and 25-year performance warranties on their solar panels. The performance warranty guarantees at least 91.3% output after 25 years.