LONGi 615W Bifacial Solar Panel

LONGi 615W Bifacial Solar Panel Overview

The LONGi 615W Bifacial Solar Panel is designed for solar projects that require high module output, efficient use of installation space and long-term energy production. Part of the Hi-MO X7 series, this module combines HPDC cell technology with a bifacial design that allows both the front and rear surfaces to contribute to electricity generation when suitable sunlight reaches them.

With a rated output of 615 watts and module efficiency of 22.8%, it is suitable for commercial rooftops, industrial facilities and ground-mounted solar installations. Its dual-glass construction and anodized aluminium alloy frame provide a robust module structure for appropriately designed mounting systems.

For buyers in Pakistan, this panel offers a high-wattage option for projects where panel output, electrical compatibility, installation space and long-term performance are important considerations.

Key Features and Benefits

HPDC Cell Technology

The panel uses HPDC cell technology to achieve high module efficiency and power output. Its 615W rated capacity helps installers design solar arrays with substantial output from each module, subject to the available installation area and system requirements.

Bifacial Energy Generation

The bifacial solar panel design allows the rear surface to contribute additional electricity when sunlight reaches it. Actual energy gains depend on mounting height, surface reflectivity, rear-side shading, panel spacing and surrounding conditions.

The panel has a bifaciality rating of 80 ± 5%. This represents the rear-side electrical performance relative to the front side under relevant test conditions. It does not mean that every installation will produce a fixed percentage of additional energy.

High Module Efficiency

With 22.8% module efficiency, the panel converts a substantial proportion of incident sunlight into electrical power under standard test conditions. Higher efficiency can be useful when installation space is limited and the project requires significant generation capacity.

Actual electricity production varies with sunlight, temperature, orientation, shading, dust and the performance of the complete solar system.

Dual-Glass Construction

The module uses 2.0 + 2.0mm heat-strengthened dual glass and an anodized aluminium alloy frame. This construction is suitable for projects requiring a glass-based module design with defined mechanical loading ratings.

The panel weighs 33.5kg and measures 2382 × 1134 × 30mm. These dimensions and weight should be considered when planning rooftop layouts, handling procedures and mounting structures.

Low Power Degradation

The panel has a stated first-year power degradation rate of less than 1%, followed by 0.4% annual degradation from years 2 to 30 under the applicable performance warranty terms.

Lower degradation supports long-term solar production planning. Actual output will still depend on operating conditions, maintenance and the overall system design.

Best Applications

The LONGi 615W Bifacial Solar Panel is suitable for consideration in:

• Commercial solar systems requiring high-output modules.

• Industrial solar installations with sufficient mounting space and structural capacity.

• Ground-mounted solar projects where rear-side sunlight can contribute to generation.

• Large rooftop solar systems with suitable roof loading and installation space.

• Bifacial solar projects designed to make effective use of reflected and scattered sunlight.

• Solar installations for businesses, installers and project developers requiring high-wattage modules.

Residential use may also be possible if the panel’s dimensions, weight and electrical characteristics fit the property and selected inverter.

When Another Panel Configuration May Be Better

This panel may not suit every installation.

• Restricted roof space: Check the panel dimensions and proposed layout before finalising the system design.

• Limited structural capacity: Confirm that the roof and mounting structure can safely support the panel weight and applicable loads.

• Minimal rear-side light: A bifacial module may offer less additional generation when its rear surface receives little sunlight.

• Incompatible inverter limits: Verify voltage, current and string configuration before installation.

• Specific size requirements: A different module format may be more suitable where the mounting area is restricted.

Cell and Module Technology

The LONGi 615W model uses HPDC cell technology in a bifacial module design. Its cell arrangement consists of 132 cells in a 6 × 22 configuration.

The panel features heat-strengthened glass on both sides, an anodized aluminium alloy frame and an IP68-rated junction box with three bypass diodes.

For bifacial installations, mounting design matters. Panel height, row spacing, rear-side shading and ground reflectivity can affect how much additional energy the rear surface contributes.

Technical Specifications

Performance and Degradation

A solar panel’s long-term value depends on its initial power output and how its performance changes over time.

The LONGi 615W Bifacial Solar Panel has a first-year power degradation figure of less than 1%, followed by an annual degradation rate of 0.4% for years 2–30. Its linear performance warranty provides a framework for assessing long-term power output under the applicable warranty conditions.

The temperature coefficient of maximum power is -0.280%/°C. As cell temperature rises above the reference temperature, the module’s power output decreases, all else being equal. Proper mounting ventilation and correct system design are therefore important, particularly during hot weather in Pakistan.

Performance Considerations for Pakistan

Solar panels in Pakistan may experience high summer temperatures, dust accumulation and long periods of strong sunlight. Installation quality and regular maintenance help support consistent system performance.

For practical results:

• Allow adequate ventilation beneath rooftop-mounted panels.

• Clean the surface appropriately when dust reduces light transmission.

• Plan bifacial mounting carefully to avoid unnecessary rear-side shading.

• Check roof and mounting strength before installation.

• Calculate string voltage and current using the inverter limits and expected temperature range.

• Install suitable electrical protection and earthing according to the system design and applicable requirements.

The operating temperature range is -40°C to +85°C, but power output does not remain constant throughout this range.

LONGi 615W Bifacial Solar Panel Price in Pakistan

The LONGi 615W Bifacial Solar Panel price in Pakistan is an important consideration for homeowners, businesses, installers and commercial solar project developers.

The current price of the LONGi 615W Bifacial Solar Panel in Pakistan is Rs. 24,753.75 per panel.

The complete project cost also depends on the number of panels required, mounting equipment, inverter selection, electrical protection, installation and other system components. Dealers and bulk buyers can contact Hajvery Solar Energy to enquire about quantity-based pricing and availability.

LONGi 615W Bifacial Solar Panel Specifications and Buying Considerations

Buyers comparing the LONGi 615W Bifacial Solar Panel specifications should consider more than rated wattage alone. Module efficiency, operating current, voltage, dimensions, bifaciality and warranty all affect its suitability for a particular installation.

The 615W rating represents nominal output under standard test conditions. It does not guarantee a specific daily energy yield or establish compatibility with every inverter.

Before purchasing, confirm the exact model, inverter input limits, proposed string configuration, mounting requirements and applicable warranty terms. For bifacial installations, also assess whether the rear surface will receive enough light to contribute meaningfully to energy generation.

LONGi Solar Panel Authenticity and Product Verification

Before ordering the LONGi 615W Bifacial Solar Panel, confirm the exact model identification and applicable warranty arrangements.

Hajvery Solar Energy can assist with product and system-selection enquiries. Buyers and installers should ensure that the selected modules match the approved system design and the inverter’s voltage and current requirements.

For commercial and bulk orders, confirm the required quantity, delivery arrangements and availability before finalising the purchase.

You can verify your LONGi 615W Bifacial Solar Panel through Hajvery Solar Energy before purchasing. Check the exact model number and product details to help ensure you are buying the intended panel. The link for panel verification is given below:
LONGi 615W Bifacial Solar Panel verification.

Warranty and After-Sales Support

The LONGi 615W Bifacial Solar Panel comes with a 12-year product warranty and a 30-year linear performance warranty.

The product warranty and performance warranty cover different aspects of the panel. Product-related coverage applies under the relevant product warranty conditions, while the linear performance warranty relates to warranted power output over the specified period.

Both warranties are subject to their applicable terms and conditions. Buyers should confirm the claim procedure, coverage requirements and relevant documentation with the seller before purchasing.

Before You Buy

Before selecting this solar panel, check the following:

• Confirm the exact 615W model.

• Verify the inverter’s maximum DC voltage and input-current limits.

• Calculate the number of panels per string using temperature-adjusted voltage.

• Check total short-circuit current against the inverter’s permitted input limits.

• Confirm roof or mounting-structure load capacity.

• Consider rear-side light exposure for bifacial installations.

• Check cable, connector, earthing and electrical-protection requirements.

• Confirm the product warranty and linear performance warranty terms.

• Verify the current price and availability before placing an order.

Frequently Asked Questions

1. What is the LONGi 615W Bifacial Solar Panel price in Pakistan?

The current price is Rs. 24,753.75 per panel. Contact Hajvery Solar Energy to confirm availability and any quantity-based pricing.

2. What are the specifications of the LONGi 615W Bifacial Solar Panel?

It has a rated output of 615W, module efficiency of 22.8%, bifaciality of 80 ± 5% and dimensions of 2382 × 1134 × 30mm. It also features HPDC cell technology and dual-glass construction.

3. Is the LONGi 615W solar panel bifacial?

Yes. Its bifacial design allows the rear surface to generate additional electricity when sufficient sunlight reaches it. Actual gains depend on mounting conditions and the surrounding surface.

4. What is the efficiency of the LONGi 615W panel?

The module efficiency is 22.8% under the applicable standard test conditions.

5. What is the warranty of the LONGi 615W Bifacial Solar Panel?

It has a 12-year product warranty and a 30-year linear performance warranty, subject to the applicable warranty terms and conditions.

6. Is the LONGi 615W solar panel suitable for commercial installations?

It can be considered for commercial and industrial solar projects where the module’s dimensions, electrical characteristics and mounting requirements suit the system design.

7. Can this panel work with any solar inverter?

No universal compatibility should be assumed. The inverter’s maximum DC voltage, MPPT operating range and current limits must be checked against the panel’s electrical characteristics and proposed string configuration.

Buy LONGi 615W Bifacial Solar Panel from Hajvery Solar Energy

Hajvery Solar Energy supplies solar products for buyers, installers, dealers and commercial projects in Pakistan. If you are considering the LONGi 615W Bifacial Solar Panel, contact the team to enquire about availability, warranty arrangements and system-selection requirements.

For mor options, View LONGi Solar Panel In Pakistan.