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  6. Solar Panel LR8-66HVD 640-665W High-Output Bifacial

Solar Panel LR8-66HVD 640-665W High-Output Bifacial

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LR8-HYD-625~660M

last updated:Oct 10, 2025

LONGi Solar Technology(ロンジソーラーテクノロジー)
LONGi Solar Technology(ロンジソーラーテクノロジー)
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TaiRay wafers and BC technology HPBC 2.0: high efficiency, high output, reliability, and excellent lifetime power generation; bifacial power generation; double glass solar cell modules.

In addition to the output on the front side, the durability provided by the dual-sided power generation and dual-sided glass structure on the back side, along with the new technology HPBC 2.0 of N-type back contact cells, is expected to lead to further improvements in efficiency, output, reliability, temperature characteristics, low light performance, and IAM (Incident Angle Modifier) performance, resulting in a reduction in power generation costs.

    Solar power generator
2025-10-10

Solar Panel LR8-66HVD 640-665W High-Output Bifacial

2025-10-10 12-01-13-00.png
2025-10-10 12-01-13-00.png 2025-10-10 12-01-57-27.png LR8-66HVD-side view.png
  • Hi-MO X10
  • Special site - Product/service details - https://pr.mono.ipros.com/longi/product/

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basic information

Mechanical Characteristics Number of Cells: 132 (6×22) Junction Box: IP68, Bypass Diodes ×3 Connector: MC4 Compatible Cover Glass: Front: 2.0mm High Transmittance ARC Heat-Strengthened Glass Back: 2.0mm Heat-Strengthened Glass Frame: Anodized Aluminum Alloy Module Weight: 33.5 kg Module Dimensions: 2382×1134×30mm Packaging Specifications: 36 modules/pallet, 144 modules/20' GP container, 720 modules/40' HC container Product Warranty: 15 years Linear Power Output Warranty: 30 years Year 1: -1.0% (Guaranteed Value: 99.0%) Year 2 onwards: -0.35%/year

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Product specifications are subject to change without notice. Please be sure to inquire about specifications, output, and delivery dates when considering specific details.

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Model number overview
LR8-66HYD-635~670M Hi-MO 9

catalog(16)

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Data Sheet Hi-MO X10_LR_7_60_HVHL_535_560M (TaiRay G11 Wafer)

Data Sheet Hi-MO X10_LR_7_60_HVHL_535_560M (TaiRay G11 Wafer)

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Data Sheet Hi-MO X10_LR_8_66_HVD_640_665M (TaiRay G12 Wafer)

Data Sheet Hi-MO X10_LR_8_66_HVD_640_665M (TaiRay G12 Wafer)

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Data Sheet Hi-MO 7_LR_8_66_HGD_595_625M (N-type HPDC TaiRay G12 Wafer)

Data Sheet Hi-MO 7_LR_8_66_HGD_595_625M (N-type HPDC TaiRay G12 Wafer)

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Data Sheet LR_7_72_HVH_640_670M (Scientist Single-Sided Generation)

Data Sheet LR_7_72_HVH_640_670M (Scientist Single-Sided Generation)

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Data Sheet LR_7_54_HVB_475_495M (Full Black, Single-Sided Generation)

Data Sheet LR_7_54_HVB_475_495M (Full Black, Single-Sided Generation)

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Data Sheet LR_7_54_HVH_480_500M (Single-Sided Generation)

Data Sheet LR_7_54_HVH_480_500M (Single-Sided Generation)

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Data Sheet LR_7_60_HVH_535_560

Data Sheet LR_7_60_HVH_535_560

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Data Sheet LR_7_72_HVD_640_665M (Scientist Dual-Sided Generation / Double Glass)

Data Sheet LR_7_72_HVD_640_665M (Scientist Dual-Sided Generation / Double Glass)

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Data Sheet LR_7_72_HVDF_640_665M (Guardian Double-Sided Power Generation and Anti-Soiling Module)

Data Sheet LR_7_72_HVDF_640_665M (Guardian Double-Sided Power Generation and Anti-Soiling Module)

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Data Sheet LR_7_72_HVHF_640_670M (Guardian Single-Sided Generation and Anti-Soiling Module)

Data Sheet LR_7_72_HVHF_640_670M (Guardian Single-Sided Generation and Anti-Soiling Module)

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LONGi Company Introduction

LONGi Company Introduction

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LONGi Case Study Collection

LONGi Case Study Collection

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LONGi Product Introduction

LONGi Product Introduction

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Data sheet collection

Data sheet collection

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Hi-MO X10 Flyer

Hi-MO X10 Flyer

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Data Sheet LR_7_54_HVD_475_495_M (Double-sided generation, double glass)

Data Sheet LR_7_54_HVD_475_495_M (Double-sided generation, double glass)

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News about this product(11)

Announcement event for the "Climate Change Mitigation White Paper" and the first "TNFD Report" at COP30.

LONGi announced the "Climate Change Mitigation White Paper" and the first "TNFD Report" at COP30.

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LONGi, a company that globally deploys solar power generation technology, announced the "2024-2025 Climate Change Mitigation White Paper" and its first TNFD (Taskforce on Nature-related Financial Disclosures) report at COP30 (the 30th United Nations Climate Change Conference of the Parties) held in Belém, Brazil. This white paper organizes efforts for decarbonization and medium- to long-term strategies across the entire value chain, from research and development to manufacturing, logistics, and product use. LONGi has set a medium-term goal of reducing Scope 1 and 2 emissions by 60% compared to 2020 levels and reducing Scope 3 emissions per unit by 52% by 2030, positioning the achievement of net zero by 2050 as a long-term goal. Additionally, the TNFD report, which is being published for the first time, analyzes the relationship with natural capital such as forests, water resources, and biodiversity based on the LEAP approach. It clearly states its commitment to reflecting nature-related risks and opportunities in management strategies and governance. LONGi aims to continue balancing climate change measures and nature conservation, contributing to the realization of a sustainable energy society.

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2025 HPBC 2.0 Excellent Case Award Application Now Open!

  • Seminar・Event

Total prize of 1 million yen! HPBC 2.0 Excellent Case Award 2025 application period begins! We are looking for impressive solar cases that have implemented HPBC 2.0. Beautiful installations that adorn residential roofs, smart energy solutions that support the future of businesses—whatever form it takes, please share your solar story created by your hands with LONGi. Outstanding cases will be selected from the applications and awarded as the "HPBC 2.0 Excellent Case Award 2025." The total prize (gift certificates) amounts to 1 million yen. Furthermore, the award-winning cases will be promoted both domestically and internationally through the LONGi official website, social media, exhibition materials, and related media. This is your chance for your project to attract the attention of energy stakeholders around the world. Let’s share the challenges embodied in HPBC 2.0 with the world. EPCs, construction companies, sales partners—anyone can apply. Challenge for the Best Case Award!

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LONGi Webinar Part 2: "Choosing EPCs in the 'Self-Consumption Era.' Proposing high efficiency and high profitability with LONGi's Hi-MO X10 × BC technology - Next-generation solar solutions equipped with lightweight, dirt-resistant, and high-performance features.

  • Seminar・Event

As we enter the "self-consumption era," there is a growing demand for solar power proposals that are more efficient and easier to install, in order to reduce electricity costs and address decarbonization. In this webinar, we will introduce the Hi-MO X10 series equipped with LONGi's latest BC (Back Contact) technology "HPBC2.0." We will provide practical information that directly enhances proposal capabilities as a "chosen EPC," including the features of next-generation modules that combine lightweight design, anti-soiling performance, and high power generation efficiency, as well as profitability and BOS cost comparisons with TOPCon products, and how to utilize the proposal support tool "PV Master." We sincerely look forward to your participation.

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LONGi has been awarded "Overall Highest Achiever" for seven consecutive years by RETC.

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In 2025, the prestigious U.S. testing and certification organization RETC (Renewable Energy Test Center) announced the "2025 PV Module Index Report," awarding LONGi the "Overall Highest Achiever" title for the seventh consecutive year. This award is given only to companies that have achieved outstanding ratings in all three areas of reliability, performance, and manufacturing quality. RETC's tests are conducted under stringent standards that exceed IEC specifications and are applied to major module products worldwide. Of the products evaluated this year, only 13% met the standards, but LONGi excelled in each category. In reliability testing, it received high ratings for damp heat (DH), PID, temperature cycling (TC), and mechanical load (SDML). In performance testing, it recorded top-class results in LETID, LID, temperature coefficients, and PAN file performance. LONGi's seven consecutive awards demonstrate its leadership in product development, manufacturing, and quality control, reaffirming its role as a driving force in the high-quality development of the global solar industry.

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Companynews list (15)

Company information

LONGi

LONGi Solar Technology(ロンジソーラーテクノロジー)

Energy

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The total production volume of the four major processes in solar cell manufacturing is the largest in the world, and wafer production volume is also number one. Specializing in monocrystalline. Although they fully entered the module market in 2014, they achieved the number one global market share from 2020 to 2022, along with an AAA rating. Every year, they actively invest in research and development, continuously supplying high-performance new products to the market that excel in reliability and quality through the latest technologies.

Product/Service List (13)

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