LONGi 550W Solar Panel | LONGi Solar Module

Solar panels are the most important component in solar power systems. They ensure that the designed performance and output are met in real-world conditions, making the choice of a high-quality panel especially crucial for large-scale projects.
If you're unsure which panel to choose and are looking for a top-tier option, the LONGi 550W solar panel is a standout candidate that we highly recommend.

Design of the LONGi 550W Solar Panel

The LONGi 550W panel features an anodized aluminum frame that enhances durability and protects against outdoor corrosion. With a total weight of 27kg, it is easy to install on both ground-mounted structures and rooftop systems.

The front glass is a 3.2mm thick tempered glass, offering excellent strength and protection for the internal solar cells. The high-transparency glass used by LONGi allows optimal light transmission, ensuring the panel operates at its best efficiency.

The junction box is centrally positioned, a distinctive feature enabled by LONGi’s half-cell cut technology, which improves performance and reliability.

Specifications of the LONGi 550W Solar Panel

LONGi Solar Panel 550W – Technical Specifications

Category	Specification
Model	LR5-72HPH-550M
Rated Power (Pmax)	550 W
Module Efficiency	21.5%
Open Circuit Voltage (Voc)	41.95 V
Short Circuit Current (Isc)	13.12 A
Voltage at Pmax (Vmp)	49.80 V
Current at Pmax (Imp)	13.98 A

Test Conditions

Condition	Details
STC	1000W/m², AM1.5 spectrum, Cell Temp 25°C
NOCT	800W/m², Ambient Temp 20°C, Wind 1m/s, AM1.5

Temperature Coefficients

Parameter	Coefficient
Isc	+0.048% / °C
Voc	-0.270% / °C
Pmax	-0.350% / °C

Mechanical Specifications

Item	Details
Cell Type	144 half-cut cells (6 x 24)
Junction Box	IP68, 3 bypass diodes
Output Cables	4mm², 300mm
Front Glass	3.2mm tempered glass
Frame	Anodized aluminum alloy
Dimensions (L x W x H)	2256 x 1133 x 35 mm
Weight	27.5 kg

Packing Information

Packaging Type	Quantity
Panels per Pallet	31
Panels per 20ft Container	155
Panels per 40ft Container	620

Mechanical Load & Durability

Test	Result
Front Load	5400 Pa
Rear Load	2400 Pa
Hail Resistance	25mm hail at 23 m/s

Operational Characteristics

Item	Value
Operating Temperature	-40°C ~ +85°C
Power Tolerance	0 ~ +5 W
Voc & Isc Tolerance	±3%
Max System Voltage	1500V DC (IEC/UL)
Fuse Rating	25 A
Typical Operating Cell Temp	45 ±2 °C
Safety Class	Class II
Fire Rating	UL Type 4

The LONGi 550W solar panel is a high-capacity module, perfectly suited for large-scale commercial projects and solar power plants. With its high efficiency and stable performance, it ensures reliable power generation even under varying environmental conditions.

One of the key strengths of LONGi lies in its trusted warranty policies, offering peace of mind for long-term investments. This makes the LONGi 550W panel a highly competitive choice in major markets around the world such as Australia, the United States, Canada, the Netherlands, and more.

Datasheet Pin LONGi LR5-72HPH-550M 550W

Key Advantages of LONGi 550W Solar Panel

✅ Advanced Cell Technology: Built using the modern M10-182mm wafer size, making it an ideal choice for large-scale solar power plants.
✅ High Efficiency: Achieves up to 21.5% efficiency, with less than 2% degradation in the first year of operation.
✅ Half-Cell Technology: Reduces cell temperature, enhancing longevity and maintaining power output with only 0.55% annual degradation throughout its lifetime.
✅ Improved Module Design: Optimized for better power transmission and enhanced overall performance.
✅ IP68 Water Resistance: Ensures durability and safety in outdoor environments with excellent waterproofing and electrical insulation.
✅ Long-Term Reliability: Guarantees over 25 years of high performance, backed by 12-year product warranty and 25-year power output warranty.
✅ International Certifications:
- IEC 61215, IEC 61730, UL 61730
- ISO 9001:2015 – Quality Management System
- ISO 14001:2015 – Environmental Management System
- ISO 45001:2018 – Occupational Health and Safety
- IEC 62941 – Design qualification and type approval of PV modules