LONGI

LONGi Solar Panels – Hi-MO, Back-Contact and High-Efficiency Photovoltaic Modules

LONGi Solar, part of LONGi Green Energy Technology, is a global photovoltaic manufacturer specialising in high-efficiency monocrystalline solar panels, advanced silicon wafer technology, back-contact solar cells and photovoltaic solutions for residential, commercial, industrial and utility-scale installations.

At 3Buy Solar, we support European solar installers, EPC contractors, resellers, solar wholesalers and project developers sourcing LONGi solar panels, associated solar inverters, mounting components, solar batteries and complete photovoltaic systems.

LONGi’s manufacturer portfolio includes Hi-MO X10, Hi-MO X6, Hi-MO X6 Max, Hi-MO 7, Hi-MO 9, Hi-MO 9 Prime, Hi-MO S10, EcoLife and earlier Hi-MO generations. These product families use different photovoltaic technologies, module formats and construction methods for different installation environments.

The manufacturer’s development strategy increasingly centres on high-efficiency back-contact technology, including Hybrid Passivated Back Contact (HPBC), HPBC 2.0 and heterojunction back-contact (HBC) architectures.

For professional buyers, the right LONGi module is determined by the project, not simply its name or nominal wattage. Electrical characteristics, available roof or land area, mounting design, module efficiency, environmental exposure, expected energy yield and lifetime system costs all influence the purchasing decision.

3Buy Solar’s online catalogue currently includes selected LONGi Hi-MO X10 Explorer 480W, 485W and 490W solar panels. For other LONGi product families, customers can request a project-specific sourcing quotation without assuming that every manufacturer model is available from stock.

Shop LONGi Solar Panels

Request LONGi Wholesale & EPC Project Pricing

Why Choose LONGi Solar for Residential, Commercial and Utility PV?

LONGi is recognised for its focus on monocrystalline silicon technology, high-efficiency solar cell research and manufacturing-scale photovoltaic production.

Its extensive module portfolio allows engineers to evaluate different solutions according to installation conditions rather than treating every roof or solar farm as an identical application.

LONGi Solar Technology Advantages

• Advanced back-contact solar cells: Reduced front-side metallisation shading and improved light capture in relevant product families.
• High module power density: Increased installed DC capacity within a given module area.
• HPBC and HPBC 2.0 technologies: Different generations of back-contact engineering.
• HBC premium residential solutions: Heterojunction back-contact technology in selected EcoLife models.
• Bifacial solar module options: Additional rear-side generation in suitable installation conditions.
• Environment-specific products: Anti-dust, anti-glare, lightweight and specialised variants.
• Wide application coverage: Residential rooftops, C&I systems, ground-mounted arrays and utility-scale projects.
• Manufacturer technical documentation: Datasheets, installation manuals, warranties and certification resources.

No single product family offers all these characteristics. Professional procurement requires selection by exact LONGi model.

LONGi – Official Manufacturer Website

LONGi Solar Product Portfolio – Hi-MO X10, X6, X6 Max, 7, 9, S10 and EcoLife

LONGi’s manufacturer portfolio contains several generations of photovoltaic modules, including both contemporary back-contact platforms and earlier products that remain relevant to installed systems and replacement projects.

Product names describe families rather than universal technical specifications. Exact cell design, electrical ratings, bifaciality, module size, warranty and geographic availability must be verified against the selected model.

LONGi Official Global Datasheet and Certificate Library

LONGi HPBC, HPBC 2.0 and HBC – Solar Cell Technology Explained

LONGi’s back-contact technologies are important because they address the limitations imposed by conventional front-contact solar cell metallisation.

HPBC – Hybrid Passivated Back Contact

HPBC uses a rear-contact cell architecture to minimise front-surface shading from electrical metallisation.

This technology is associated with LONGi’s Hi-MO X6 platforms.

Its technical objective is to increase useful light absorption and improve the collection of generated electrical charge.

HPBC 2.0 – Second-Generation Back-Contact Solar Cells

HPBC 2.0 extends LONGi’s earlier technology through advanced passivation, TaiRay silicon wafers and optimised cell interconnections.

LONGi uses HPBC 2.0 in product families such as Hi-MO X10 and Hi-MO 9.

The manufacturer also describes advanced zero-busbar architecture and shading-mitigation features for selected models.

HBC – Heterojunction Back Contact

HBC combines the principles of heterojunction technology with a rear-contact arrangement.

LONGi introduced commercialised HBC photovoltaic modules within its EcoLife portfolio, including high-efficiency premium residential products.

HPBC 2.0 and HBC are different architectures and should not be treated as interchangeable.

LONGi Back-Contact vs TOPCon Solar Panels

Higher laboratory cell efficiency does not necessarily translate into the same percentage improvement in annual PV output.

Professional buyers should compare module-level characteristics and site-specific energy-yield models rather than laboratory records alone.

Official LONGi Hi-MO X10 Technology Information

LONGi Hi-MO X10 – HPBC 2.0 Modules for Residential and Commercial PV

Hi-MO X10 is one of LONGi’s advanced high-efficiency product platforms.

Built around HPBC 2.0 technology, the family includes multiple power classes and configurations for residential, commercial and specialised applications.

Hi-MO X10 should not be reduced to the three 480–490W products currently listed on the 3Buy Solar webshop.

Hi-MO X10 Explorer

Explorer modules are relevant to rooftop projects requiring high efficiency, compact module formats and careful roof-area utilisation.

3Buy Solar offers individual purchasing pages for three LR7-54HVH variants:

These three models are listed as monofacial glass-backsheet photovoltaic modules, not bifacial dual-glass products.

Hi-MO X10 Scientist

The Scientist range focuses on advanced high-efficiency back-contact performance and power density.

LONGi’s 2026 documentation identifies model families including:

• LR7-54HVD in the 475–500W range.
• LR7-60HVD in the 530–555W range.
• LR7-60HVH in the 535–560W range.
• LR7-72HVH in the 640–670W range.

These module formats target different installation conditions and must be compared using their actual physical dimensions, current ratings, warranty and manufacturer mounting instructions.

Hi-MO X10 Guardian

Guardian refers to specialised designs for particular application requirements.

Relevant configurations include:

• Anti-Dust: Designs intended to mitigate dirt accumulation.
• Anti-Glare: Products for projects requiring glare control.
• Light Design: Reduced module weight for certain roof structures.
• Fire-Resistant: Configurations designed around specified fire-performance requirements.

Environmental features are model-specific and should never be attributed to every Hi-MO X10 product.

LONGi Hi-MO X10 Light Design

LONGi has introduced lightweight Hi-MO X10 modules for roofing situations where structural load is a major design constraint.

The manufacturer has reported selected Light Design models with:

• Module output up to 560W.
• Efficiency up to 24.8%.
• Module weight per area of approximately 7.2 kg/m².

For EPC contractors, the potential benefit is not limited to module efficiency. Reduced weight can affect roof reinforcement requirements, handling and the feasibility of rooftop PV.

However, lightweight construction must still be assessed against mechanical loading, approved mounting arrangements and local building requirements.

LONGi Hi-MO X10 Light Design – Manufacturer Announcement

LONGi Hi-MO X6 – Explorer, Scientist and Guardian

LONGi Hi-MO X6 is an established back-contact module family associated with the manufacturer’s earlier HPBC platform.

The range includes Explorer, Scientist and Guardian versions for different rooftop and environmental requirements.

Hi-MO X6 Explorer

Explorer products target residential and commercial applications where efficiency, available area and system economics matter.

Hi-MO X6 Scientist

Scientist variants place greater emphasis on module power density and advanced cell performance.

Hi-MO X6 Guardian

Guardian products include specialised configurations developed for particular installation challenges, such as dust or demanding environmental conditions.

The X6 platform remains relevant for project comparisons, installations already designed around these models and replacement procurement.

LONGi European Datasheet Library – Hi-MO X6

LONGi Hi-MO X6 Max – TaiRay and M11 High-Power Modules

Hi-MO X6 Max builds on LONGi’s HPBC platform using the manufacturer’s TaiRay technology and larger rectangular M11 wafer formats.

Its product families include Explorer, Scientist and Guardian Anti-Dust.

LONGi’s European documentation identifies models including:

• Hi-MO X6 Max Explorer 455–465W.
• Hi-MO X6 Max Scientist 470–475W.
• Larger Explorer configurations around 605–615W.
• Larger Scientist configurations around 620–630W.
• Guardian Anti-Dust configurations for specialised rooftop applications.

The different module dimensions, handling requirements and power classes make exact model identification important.

Hi-MO X6 Max Guardian Anti-Dust

The Guardian Anti-Dust design addresses the accumulation of contaminants near the module edge.

This may be particularly relevant to warehouses, agricultural buildings and commercial low-tilt rooftops.

The resulting energy-yield benefit should be assessed through actual site conditions and maintenance cost assumptions rather than a universal percentage.

LONGi European Hi-MO X6 Max Datasheets

LONGi Hi-MO 7 – Bifacial Modules for Large-Scale Solar Projects

Hi-MO 7 is a high-efficiency bifacial module platform relevant to ground-mounted PV installations and larger commercial projects.

Bifacial photovoltaic modules can capture reflected light from surfaces behind the panels, increasing generation when installation geometry provides sufficient rear-side irradiance.

Typical applications include:

• Ground-mounted solar farms.
• Utility-scale PV arrays.
• Tracker-based installations.
• Agricultural photovoltaic projects.
• Large commercial arrays.
• Projects with suitable reflective ground conditions.

The important engineering parameters include bifaciality, mounting height, row spacing, albedo, shade effects and inverter current limits.

Hi-MO 7 should be compared with newer Hi-MO 9 solutions using the same energy-yield assumptions, financial modelling period and balance-of-system cost boundaries.

Official LONGi Hi-MO 7 Documentation

LONGi Hi-MO 9 – High-Efficiency Back-Contact Modules for Utility-Scale PV

LONGi Hi-MO 9 is a high-power photovoltaic module platform for large-scale solar installations.

It uses advanced HPBC 2.0 technology, with selected models offering high efficiency and bifacial generation.

In April 2025, LONGi announced an upgraded Hi-MO 9 variant reaching:

The stated characteristics relate to the relevant manufacturer product generation and should not be assigned to every legacy Hi-MO 9 model.

Why Consider Hi-MO 9 for Solar Farms?

For utility-scale procurement, higher conversion efficiency can allow greater DC capacity within a constrained land area.

However, the economic benefit depends on the array layout, inverter architecture, electrical infrastructure, mounting system, energy yield and project location.

In ground-mounted projects, additional considerations include:

• Bifacial energy gain.
• Tracker compatibility.
• Row shading.
• Ground coverage ratio.
• String design.
• Module handling.
• Long-term degradation.
• Mechanical and environmental qualification.
• Bankability and warranty documentation.

LONGi Hi-MO 9 – Official Technical Development

Read 3Buy Solar: LONGi Hi-MO 9 IEC 63556 Certification

LONGi Hi-MO 9 Prime – 680W and 25.2% Module Efficiency

In June 2026, LONGi introduced Hi-MO 9 Prime, extending the company’s HPBC 2.0 module platform for high-density utility-scale photovoltaic projects.

The manufacturer’s published specifications include:

• Module output up to 680W.
• Module efficiency up to 25.2%.
• HPBC 2.0 cell architecture.
• Module dimensions of 2382 × 1134 × 30 mm.
• Bifaciality of 75% ±5% for the referenced design.
• Temperature coefficient of maximum power of -0.260%/°C.
• Product warranty of 12 years for the referenced configuration.
• 30-year extra linear power output warranty.

LONGi also describes specialised reliability developments such as Selective Temperature Alloy Connection technology.

Why Hi-MO 9 Prime Matters to European EPCs

Higher module power density can improve the amount of installed DC capacity per hectare in land-constrained projects.

LONGi’s own project modelling illustrates this benefit, although the exact gains are specific to the modelled layout and should not be assumed for every European solar farm.

For procurement, confirm the exact commercially available module, certification status, warranty and delivery conditions before including Hi-MO 9 Prime in a binding EPC proposal.

LONGi Hi-MO 9 Prime – Official 2026 Launch and Technical Details

Specialised Hi-MO 9 Variants

LONGi also introduced application-specific Hi-MO 9 solutions in 2026:

• Ice-shield: Designed for selected ice- and cold-weather conditions.
• Sea-shield: Intended for challenging coastal environments.
• Edge: Developed for particular application constraints.
• Hydro Clear: A specialised environmental application configuration.

These products require their own technical assessment; they should not be treated as interchangeable variants of a generic 680W module.

LONGi 2026 Hi-MO 9 Specialised Portfolio

LONGi Hi-MO S10 – Latest High-Efficiency Product Development

LONGi’s 2026 manufacturer documentation library includes the Hi-MO S10 series.

For example, the manufacturer lists the LR7-72HJD family in the 665–690W power range, with documentation published in June 2026.

Hi-MO S10 is relevant to professional buyers tracking the latest large-format, high-efficiency photovoltaic developments.

When specifying this family, installers and EPC contractors should verify:

• Exact cell architecture.
• Module dimensions and weight.
• Monofacial or bifacial construction.
• Maximum system voltage.
• String current and voltage.
• Temperature characteristics.
• Warranty conditions.
• Mounting and certification documentation.

It should not be assumed that a newly documented LONGi module is immediately available through every European wholesaler.

LONGi Hi-MO S10 – Official Datasheet Library

LONGi EcoLife – Premium Residential HBC Solar Panels

EcoLife is LONGi’s premium residential photovoltaic portfolio, including high-efficiency heterojunction back-contact products.

LONGi introduced its EcoLife HBC technology in 2025.

The manufacturer announced selected EcoLife products with:

• Module efficiency up to 25%.
• Module power up to 510W.
• HBC cell architecture.
• Premium residential positioning.
• Selected bifacial module construction.
• Low power-temperature coefficient for the announced product family.

LONGi EcoLife for Premium Rooftop PV

EcoLife is relevant where:

• Available rooftop area is limited.
• High output per square metre is valuable.
• Homeowners prioritise premium module appearance.
• The electrical design requires compact, high-performance modules.
• The installation is part of a hybrid solar and battery storage project.

EcoLife vs Hi-MO X10

EcoLife and Hi-MO X10 belong to different product families.

Hi-MO X10 uses HPBC 2.0 technology, while selected EcoLife products use HBC.

The final purchasing decision must be based on the actual module datasheet, available format, price and installation requirements.

LONGi EcoLife and HBC – Official Manufacturer Announcement

LONGi Hi-MO 5 and Hi-MO 5m – Legacy Solar Modules

Earlier Hi-MO 5 and Hi-MO 5m module families remain relevant to existing commercial and residential installations.

These technologies may be encountered in maintenance, repair and module replacement projects.

Can New LONGi Panels Replace Older Hi-MO Modules?

Not automatically.

Even when a newer module has a similar wattage, differences in voltage, current, connector type, dimensions and mounting requirements may prevent direct substitution.

Before replacing a module, check:

• Exact existing module reference.
• Replacement module electrical characteristics.
• String compatibility.
• Module dimensions.
• Connector compatibility.
• Mounting arrangements.
• Bypass diode and shading behaviour.
• Inverter input requirements.

For older projects, it may be preferable to source a compatible module with matching electrical characteristics rather than install the latest product generation.

LONGi Legacy and Current Product Documentation

Choosing the Right LONGi Solar Panel for a European PV Project

The best LONGi product depends on installation type and engineering priorities.

LONGi Solar Panel Electrical Design – Important Installer Specifications

A LONGi solar module must be electrically compatible with the selected solar inverter and string design.

The key parameters are:

Cold-Weather Voltage and String Length

PV module open-circuit voltage increases as cell temperature decreases.

For installations in Germany, Austria, Hungary, Slovakia, Romania, Poland and other European regions, cold-weather voltage calculations are essential.

The maximum number of modules in a series string must remain within the inverter’s PV voltage limits under the specified minimum site temperature.

Maximum PV Input Current

Modern high-efficiency modules can have relatively high operating currents.

Professional installers should verify that the intended inverter MPPT accepts the module’s operating and short-circuit current, including any parallel string configuration.

Inverter MPPT Design

Different roof orientations may require separate MPPT inputs.

An east-west array, for example, should be designed according to the inverter’s supported string configurations and electrical limits rather than automatically connecting differently oriented modules into one string.

Module Wattage Is Not a Complete System Specification

A higher nominal wattage may come from a physically larger module rather than higher efficiency.

Installers should compare power per square metre, dimensions, handling requirements and expected annual energy output.

Browse Solar Inverters

LONGi 480W, 485W and 490W Solar Panels – Rooftop Capacity Planning

For a system using the 490W Hi-MO X10 Explorer module, nominal PV capacity is calculated by multiplying the number of modules by 0.49 kWp.

These calculations are for nominal capacity only. They do not establish inverter compatibility, MPPT allocation, string length or mounting requirements.

Shop LONGi 400W+ Solar Panels

LONGi Solar Panels for Commercial and Industrial Rooftops

Commercial and industrial solar PV projects require more than an efficient module.

The full engineering and procurement assessment should consider:

• Usable rooftop area.
• Wind and snow loading.
• Roof membrane and structural condition.
• Module size and handling.
• Mounting-system compatibility.
• DC string routing.
• Inverter location.
• Cable voltage drop.
• System monitoring.
• Fire-safety requirements.
• Cleaning and maintenance.
• Annual self-consumption and electricity exports.

LONGi Modules for Low-Tilt and East-West Flat Roofs

An east-west mounting system can make efficient use of available roof space while producing a broader daily generation profile.

Compared with a south-facing layout, the best arrangement depends on the available roof area, mounting costs, shading, annual irradiation and the project’s electrical demand profile.

For professional procurement, compare:

• kWp installed per square metre of available roof.
• Expected annual kWh/kWp.
• Total annual electricity production.
• Mounting structure and ballast cost.
• Roof loading.
• Installation labour.
• Grid export limitations.
• Consumption matching.

A higher specific yield does not necessarily mean a higher total rooftop energy yield if the mounting layout significantly reduces the installed capacity.

Related 3Buy Solar Commercial Procurement Resources

Commercial Solar Panels

500W+ Solar Panels

Solar Mounting Systems and Racking

The 500W+ category can be used for high-power module comparisons and product enquiries; availability must be confirmed rather than assumed.

LONGi Bifacial, Glass-Glass and Monocrystalline Solar Panels

Different LONGi module constructions suit different projects.

Monocrystalline LONGi Modules

LONGi’s photovoltaic portfolio is based on high-efficiency monocrystalline silicon technologies.

Browse Monocrystalline Solar Panels

Bifacial LONGi Modules

Bifacial modules generate electricity from front-side and rear-side irradiation.

The additional generation depends on mounting geometry, albedo and other installation conditions.

For utility-scale projects, bifacial yield should be modelled rather than assumed as a fixed percentage.

Browse Bifacial Solar Panels

Glass-Glass LONGi Modules

Selected LONGi product families use dual-glass construction.

Dual-glass modules can offer different mechanical and environmental characteristics from glass-backsheet products.

However, panel weight, warranty, mechanical loading and mounting instructions vary by model.

Browse Glass-Glass Solar Panels

LONGi Solar Panels with Hybrid Inverters and Solar Batteries

LONGi solar panels can be used in appropriately designed grid-connected, hybrid and off-grid photovoltaic systems.

The PV modules generate DC electricity; the connected inverter manages power conversion, while a compatible battery system provides storage where required.

LONGi solar panels do not need to be paired with a battery from the same manufacturer.

Inverter Brands for LONGi PV System Design

Professional installers can evaluate suitable inverter models from manufacturers available through 3Buy Solar:

• Deye – Hybrid and off-grid inverter solutions.
• SolaX Power – Residential and commercial hybrid inverters.
• Growatt – Grid-connected and hybrid solar inverters.
• Huawei – Smart PV power conversion.
• Fronius – Residential and commercial PV inverters.
• SMA – Residential and commercial power conversion.
• Solis – String and hybrid inverter systems.
• SolarEdge – Optimised photovoltaic inverter systems.
• Solplanet – Grid-connected and hybrid energy systems.

These brands provide relevant inverter options, not universal model-level compatibility approval.

LONGi Modules with Solar Battery Storage

For residential projects, solar batteries can increase photovoltaic self-consumption when appropriately configured with a compatible inverter and energy management system.

For commercial projects, storage can also support peak-shaving and load-shifting objectives where the technical and financial conditions justify it.

Related procurement resources:

• Solar Batteries
• Energy Storage Solutions
• Complete Solar Kits

Electrical Protection, Wiring and Mounting

A complete LONGi PV system may also require:

• DC isolators.
• AC disconnect switches.
• Surge protection.
• PV cables.
• Approved connectors.
• Solar mounting structures.
• Monitoring and metering.

PV Protection and Disconnectors

DC Isolators and PV Disconnect Switches

Solar Cables and Wiring

Solar PV Connectors

LONGi Solar Panel Certifications, Warranties and Bankability

Professional European PV procurement requires model-specific technical and compliance documentation.

Relevant documents include:

• Manufacturer product datasheet.
• Installation and maintenance manual.
• Applicable IEC 61215 design qualification documentation.
• IEC 61730 module safety evidence.
• Applicable EU conformity documentation.
• Mechanical loading specifications.
• Product warranty.
• Power output warranty.
• Environmental testing where relevant.
• Serial-number and traceability records.

Is LONGi a Tier-1 Solar Panel Manufacturer?

LONGi has appeared in BloombergNEF Tier-1 PV module manufacturer classifications.

Tier-1 is a bankability-related classification, not an independent quality certificate for every module.

For financing or EPC tender requirements, buyers should verify the manufacturer against the applicable reporting-period list.

LONGi Module Reliability and Kiwa PVEL

Kiwa PVEL reliability testing provides additional information about the tested photovoltaic products and their performance under accelerated stress conditions.

LONGi has appeared in the PV Module Reliability Scorecard and related Top Performer reporting.

Such recognition should not be interpreted as a blanket guarantee for every LONGi product.

Read 3Buy Solar: LONGi 2025 Kiwa PVEL Top Performer

LONGi Warranty – Why Module Family Matters

Warranty terms vary by module generation, product family and geographic documentation.

A 30-year power performance warranty is not the same as a 30-year product warranty.

Check:

• Material and workmanship warranty period.
• Performance warranty period.
• Initial degradation allowance.
• Annual linear degradation limit.
• Exclusions.
• Installation requirements.
• Claim procedures.
• Relevant documentation version.

For binding project proposals, use the warranty issued for the exact module model.

LONGi Datasheets, Installation Manuals and Certificates

LONGi publishes product datasheets, installation documentation, warranty information and certificates through its official manufacturer document libraries.

Official technical libraries:

• LONGi Global Datasheets, Installation Manuals, Certificates and Warranties
• LONGi European Product Datasheets and Technical Documentation

These libraries include documentation for Hi-MO X10, X6, X6 Max, Hi-MO 7, Hi-MO 9, S10, EcoLife and earlier module generations.

Technical Documentation on 3Buy Solar Product Pages

The currently listed LONGi Hi-MO X10 Explorer product pages include sections for datasheets, installation manuals, certification documents and warranty information.

• LONGi 480W – Product and Technical Downloads
• LONGi 485W – Product and Technical Downloads
• LONGi 490W – Product and Technical Downloads

Before installation, verify that the exact certificate and document version match the supplied model.

A certificate from one LONGi family should not automatically be applied to another.

LONGi Technical Training and Product Research – 3Buy Solar YouTube

Professional solar installers require reliable technical information on PV module selection, inverter compatibility, string design, mounting and photovoltaic system optimisation.

The 3Buy Solar official YouTube channel provides additional video resources covering solar PV, solar inverters, energy storage and installation-related subjects.

For LONGi projects, useful topics include:

• Photovoltaic cell technologies.
• Solar module electrical characteristics.
• Series and parallel PV string design.
• Hybrid inverter integration.
• Commercial rooftop PV planning.
• Solar battery storage.
• Electrical protection and installation practice.
• Complete solar PV systems.

Watch 3Buy Solar Technical Videos

The manufacturer’s current datasheet and installation manual remain the primary sources for product-specific design and safety requirements.

LONGi Solar Research and Industry News – 3Buy Solar Articles

3Buy Solar publishes manufacturer-focused content relevant to photovoltaic system design, product evaluation and professional purchasing.

LONGi PV Module Reliability

LONGi Secures 2025 Kiwa PVEL Top Performer Recognition

This article examines LONGi’s recognition in PV module reliability testing and its relevance to professional procurement.

LONGi Hi-MO 9 Certification

LONGi Hi-MO 9 Achieves IEC 63556 Full-Scenario Certification

A relevant resource for engineers evaluating high-power PV modules for demanding commercial and utility-scale installations.

European Solar Wholesale Procurement

3Buy Solar – Solar Supplier for Resellers and Online Solar Shops

Commercial guidance for resellers, solar shops and sub-distributors sourcing solar panels and related equipment.

LONGi Project Purchasing

3Buy Solar Official B2B Price List

For registered and approved professional buyers comparing solar panels, inverters, energy storage and installation equipment.

LONGi Solar Panel Wholesale Prices – European B2B Procurement

LONGi solar panel pricing depends on the exact product, wattage, quantity, warehouse location and delivery requirements.

A professional purchasing decision should consider both the module price and the total installed system cost.

Factors Influencing LONGi Solar Panel Cost

• Exact module model.
• Nominal power and efficiency.
• Module dimensions and weight.
• Order quantity.
• Pallet and transport arrangement.
• Availability and dispatch location.
• Mounting and installation requirements.
• Project warranty requirements.
• Expected lifetime energy production.

Buying LONGi by Pallet or in Bulk

3Buy Solar supports enquiries for individual professional installations, full pallets, multiple pallets and larger project quantities, subject to sourcing conditions.

For larger purchasing requests, buyers should provide the exact model, total quantity, delivery destination, required schedule and any project documentation requirements.

LONGi Prices vs Total System Economics

A module with a lower €/Wp purchase cost is not automatically the more economical option.

For a roof with limited area, module efficiency may allow greater installed capacity.

For commercial and utility-scale projects, mounting cost, electrical infrastructure, energy yield and operating expenditure can materially change the preferred product.

A complete economic assessment should consider lifetime electricity generation and the installed cost of the entire PV system.

Shop LONGi Solar Panels

Request LONGi EPC or Wholesale Quotation

Why Source LONGi Solar Panels Through 3Buy Solar?

3Buy Solar focuses on professional photovoltaic procurement, including solar panels, hybrid solar inverters, solar batteries, off-grid equipment and complete solar PV kits.

Our approach is designed around actual purchasing and installation requirements rather than simply recommending the highest-rated module.

Model-Level Product Identification

The correct manufacturer reference matters for engineering, certification and project documentation.

Direct Product Ordering

Selected LONGi Hi-MO X10 Explorer modules have individual 3Buy Solar purchasing pages.

Project-Specific Procurement

For other LONGi families, professional buyers can submit exact model and quantity requirements for a quotation.

Related System Components

Installers can coordinate PV modules with appropriate inverters, mounting systems, electrical protection, solar batteries and complete kits.

European Logistics

Delivery arrangements depend on the actual product, warehouse, destination and confirmed dispatch conditions.

Technical and Commercial Resources

3Buy Solar provides manufacturer-oriented technical content, product documentation links, professional pricing resources and additional solar industry information through its YouTube channel.

Frequently Asked Questions About LONGi Solar Panels

What solar panel technologies does LONGi manufacture?

LONGi manufactures advanced monocrystalline photovoltaic modules including HPBC, HPBC 2.0, HBC and bifacial product configurations. Technology depends on the exact model and family.

What LONGi product families are available?

The manufacturer’s documented portfolio includes Hi-MO X10, X6, X6 Max, Hi-MO 7, Hi-MO 9, Hi-MO 9 Prime, Hi-MO S10, EcoLife and earlier Hi-MO 5 ranges.

What is the difference between LONGi Hi-MO X10 and X6?

Hi-MO X10 uses HPBC 2.0 technology, while Hi-MO X6 is associated with the earlier HPBC platform. The exact efficiency, warranty and electrical characteristics depend on the model.

Is LONGi HPBC the same as TOPCon?

No. HPBC is a back-contact architecture, while TOPCon uses tunnel oxide passivated contacts. Both are advanced photovoltaic technologies with different cell designs.

What is LONGi Hi-MO 9 Prime?

Hi-MO 9 Prime is a high-efficiency module platform introduced in June 2026, with manufacturer-published performance reaching 680W and up to 25.2% efficiency for selected configurations.

What is LONGi EcoLife?

EcoLife is LONGi’s premium residential product portfolio, including selected HBC heterojunction back-contact modules.

Does LONGi offer anti-dust solar panels?

Yes. The manufacturer has developed Guardian Anti-Dust configurations intended to reduce soiling-related losses under suitable operating conditions.

Does LONGi manufacture lightweight solar panels?

Yes. The manufacturer’s Hi-MO X10 Light Design range targets certain rooftops with structural loading constraints.

Are LONGi solar panels bifacial?

Selected LONGi product families include bifacial modules. The current 480–490W LR7-54HVH Explorer products listed by 3Buy Solar are categorised as monofacial.

Can LONGi solar panels be used on commercial flat roofs?

Yes, where the exact module, mounting system and structural requirements are suitable. East-west and south-facing layouts should be compared through site-specific yield modelling.

Can LONGi solar panels be used with Deye, SolaX, Growatt or Huawei inverters?

Yes, when the electrical PV string design satisfies the exact inverter’s voltage, current and MPPT requirements.

Can LONGi solar panels charge solar batteries?

Yes. LONGi panels can provide PV generation to suitably designed hybrid inverter and energy storage systems.

How many 490W LONGi modules make approximately 10 kWp?

Twenty modules provide 9.80 kWp, and twenty-one provide 10.29 kWp nominal array capacity.

Is LONGi a Tier-1 solar panel manufacturer?

LONGi has appeared in BloombergNEF Tier-1 manufacturer classifications. The classification concerns bankability and is not a product quality certificate.

Where can I find LONGi installation manuals and certificates?

LONGi provides official datasheets, warranty documents, installation instructions and certificates through its global and European download libraries. 3Buy Solar’s listed LONGi product pages also contain document sections.

Can installers order LONGi solar panels by the pallet?

Professional buyers can submit pallet and larger-volume enquiries through 3Buy Solar. Exact quantities, pricing and delivery arrangements must be confirmed for the requested model.

Does 3Buy Solar supply every LONGi module?

The webshop lists selected LONGi products. Other manufacturer families may be evaluated through project-specific enquiries, subject to actual sourcing availability.

Where can I buy LONGi solar panels wholesale in Europe?

Professional installers, EPC contractors, resellers and solar wholesalers can browse LONGi products at 3Buy Solar or request a quotation through the 3Buy Solar European sales team.

Buy LONGi Solar Panels in Europe – 3Buy Solar B2B Supplier

Looking for LONGi Hi-MO X10, X6 Max, Hi-MO 9, EcoLife or another high-efficiency LONGi photovoltaic module for a European PV project?

3Buy Solar supports professional procurement for residential rooftops, commercial and industrial solar installations, EPC projects and selected utility-scale applications.

Choose the required LONGi product based on electrical design, available installation area, manufacturer documentation, purchasing quantities and delivery requirements.

Buy LONGi Hi-MO X10 Explorer 480W

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