Cart content

Create a quote

Cart content

Brand (1)
Cell type
Сell number
Price per Watt
Power Output
DC/Charger Volt Compatible
Scope of application
Frame color
Save & Close

LONGi Solar Panels

In stock
LONGi 445W Solar Panel 144 cell LR4-72HPH-35 Modules - A1 Solar Store
Cell number 144 cell
DC/Charger Volt Compatible 12v, 24v, 48v
Price per Watt $0.52
Rated Power Output 445 W
Voltage (VOC) 49.1V
Cell Type Monocrystalline
In stock
LONGi 355W Solar Panel 120 cell LR4-HPB Modules - A1SolarStore
Cell number 120 cell
DC/Charger Volt Compatible 12v, 24v, 48v
Price per Watt $0.54
Rated Power Output 355 W
Voltage (VOC) 40.6V
Cell Type Monocrystalline

Complete guide on solar systems

Learn how solar panels works and choose the one that suits your needs best

Current technologies in the field of solar energy are moving forward with incredible speed. In the modern world, solar panels provide energy for spacecraft, hard-to-reach areas of the planet, private and commercial buildings, factories, vehicles, gadgets, and much more. With such a growth in solar, it is getting hard to know which manufacture to choose when building your own solar power system. One of the leaders in solar manufacturing, LONGi is the company you can trust. LONGi solar panels are premium monocrystalline modules that are highly efficient and durable.

About LONGi Solar

LONGi Solar is one of the world's leading manufacturers of highly efficient monocrystalline solar cells and modules. The company was founded in 2000, and since 2015 annually produces equipment for photovoltaic stations with a total capacity of more than 1 GW. The company's headquarters is located in Xi'an, China. In addition, LONGi Solar has its official representative offices in Japan, Malaysia, the USA, India, and Germany.

LONGi Solar pays special attention to the research and development, production, sales, and marketing of monocrystalline silicon products. LONGi Solar strives to provide the best cost-effective solutions, and also promotes the implementation of monocrystalline technologies worldwide.

High efficient Longi solar panels

LONGi Solar Panels are highly efficient monocrystalline modules, with excellent electrical and solid structural performance. They achieve an efficiency of close to 20%. The panels provide great power output and greater energy yields. LONGi solar modules generate an outstanding amount of power even in low irradiance conditions, such as dawn, dusk, and cloudy days.

LONGi solar technology

LONGi solar adopt three distinct technology in the production of their solar panels: PERC Technology, Bifacial Power Generation, and Half-cut Technology.

PERC technology improves cell efficiency by passivating the rear of the solar cell. Thanks to this passivation, light that reaches the back surface of the element is reflected in the cell, where it receives a second chance to create an electric current. PERC Technology increases the spectral sensitivity of solar cells.

Bifacial Power Generation is based on PERC Technology but as the name suggests, the solar module is a double-sided PERC panel that generates energy from direct, defused, and reflected sunlight.

Solar panels made using Half-Cut Cell technology consist of twice as many photocells. Half-cut solar cells are traditional silicon solar cells that were cut in half using a laser. Thanks to the shortened busbars, such modules have less electrical resistance and, as a result, produce more electricity.

What mounting is suitable for Longi solar panels?

When attaching LONGi solar panels, the installation location must be taken into account, and in the case of roof installation, the roofing material.

First, the most convenient and correct place needs to be chosen for the installation of solar panels. If the ground type of installation suits you, then there are two types of ground mounting: standard ground mount and pole mount. Standard ground mount uses a metal frame that is screwed into the ground to hold solar modules. Pole mounting is considered the most reliable type of mounting and can hold multiple panels.

If you plan to use the roof to place the panels, then you should think not only about the method of attachment but also about the roofing material. Most roofing materials are suitable for LONGi solar panels with the metal roofs being the best choice and slate roofs being not ideal.

How long is the warranty on the LONGi solar panels?

All LONGi solar panels come with a 10-year product warranty on materials and processing and a 25-year extra linear power output warranty.

To see the warranty information, please refer to the datasheet available with every solar panel.

What is the price of LONGi solar panels?

We offer a variety of budget-friendly LONGi solar panels that are priced from $170 to $230.

What cell types of Longi solar panels are the best?

Monocrystalline solar cells are considered the most developed solar cells. They are made from a single silicon crystal and as the results they have much higher efficiency and sleeker aesthetics compared to polycrystalline cells. It is known that monocrystalline solar panels are the most efficient panels on the solar market with an efficiency of more than 22%. These panels are approximately 10-15% more efficient than polycrystalline modules of the same size. Thanks to their efficiency, monocrystalline panels are the most space-efficient panels and take up less space than any other solar panels. Also, monocrystalline panels are more durable and have a longer life span than polycrystalline panels. The single silicon crystal in the monocrystalline panel does not age and has stable characteristics over the entire service life, only elements that surround the silicon deteriorate with time. And finally, monocrystalline solar panels tend to work better in low light and perform greater in warm weather compared to polycrystalline panels.

What conditions are suitable for Longi solar panels?

LONGi solar modules are made to withstand very harsh environmental conditions like heavy snowfall or strong wind. Some LONGi modules passed rigorous ammonia and salt mist resistance tests, which makes them an excellent choice for installations in harsh environments such as farms and seaside as well as for installations in hot and highly humid areas.

The efficiency of LONGi solar panels depends on light intensity. The better the illumination, the more energy solar modules will generate. But weather and climate conditions are no less significant factors that affect solar panel productivity.

LONGi solar panels are designed to operate in temperatures ranging from -40 °F to +185 °F, however, like most solar panels, LONGi panels reach their maximum efficiency at lower temperatures.

Load more

Frequently asked questions

Our standard shipping charge is $195 for up to 11 panels and it is increased by $25 for every 4 additional panels. In the event, the product is only available on East or West coast custom quote will be sent to you before the order is processed. Normally, we are able to deliver solar panels within 7 business days.

With top tier solar panels, you pay for the brand name, proprietary new technology, higher energy output, and better warranty support.

Please refer to the product datasheet on the product page. We have a datasheet for every product we sell.

In general, manufacturers provide a 25 year-long performance warranty and a 10 year-long equipment guarantee. Some manufacturers offer 12-15 years of warranty. More information is available in our warranty support section.

We recommend Panasonic and Mission Solar panels for smaller systems as their high energy output and excellent craftsmanship guarantee years of service.

Any of our panels can be used for a 12v system with a properly selected inverter and charge controller.

Yes, we can set up a pick up at a local distributor. Please call to discuss options and stock availability.

To achieve the best system efficiency, panels should be connected in series to create higher voltage.

Arrange & Filters Reset