Innovations and Advancements in Heterojunction Solar Technology: An In-Depth Interview with Abhishek Kaushal, Director South Asia, Huasun Energy

In an interview with Abhishek Kaushal, Director for South Asia at Huasun Energy Co., Ltd, we delve into the insights of a seasoned expert with over 15 years in the energy sector. Known for his strategic prowess and comprehensive understanding of both conventional and renewable energy markets, Abhishek has held senior roles across various sectors and regions. Join us as we explore his vision for advancing renewable energy and gain insights into his perspectives on the industry’s evolving landscape.

1. Can you provide an overview of Huasun’s latest innovation, the zero busbar (0BB) heterojunction (HJT) modules? What makes this technology a game-changer in the solar industry?

Huasun’s latest innovation, the zero busbar (0BB) heterojunction (HJT) modules, represents a significant advancement in solar technology. Unlike traditional HJT modules that use multiple busbars, the 0BB design eliminates these busbars entirely. This innovation enhances the efficiency of the modules by reducing shading losses, increasing the light-absorbing area and improving the overall cell performance. The 0BB technology also contributes to lower production costs due to reduced material usage and simpler manufacturing processes. This makes the technology a game-changer as it not only improves module efficiency and performance but also drives down costs, making high-efficiency solar power more accessible.

2. As Huasun continues to lead in HJT mass production, how has the integration of 0BB technology enhanced the market competitiveness of your products, particularly in terms of reliability and lower LCOE?

The integration of 0BB technology has significantly enhanced the market competitiveness of Huasun’s products by addressing key factors such as efficiency, reliability and cost-effectiveness. The absence of busbars reduces shading losses and improves energy conversion efficiency, leading to higher power output per module. This increased efficiency contributes to a lower Levelized Cost of Electricity (LCOE) as more energy is produced at a lower cost. Additionally, the 0BB technology improves reliability by reducing the risk of hot spots and other possible cause areas associated with traditional busbar designs. Overall, these advancements position Huasun’s products as highly competitive in the market, offering superior performance and cost advantages.

3. Huasun is consistently recognized as a Tier I solar manufacturer. How does this status influence your approach to innovation, production quality, and market trust?

We are proud to be in the BNEF Tier I listing consistently as it demonstrates the trust and faith our customers have shown in us and we assure all our stakeholders to continue putting strong efforts in the R&D initiatives to bring innovation to the forefront, improve production quality as well as bring down the costs in the process. Tier I status not only enables Huasun to be eligible for various bids / tenders but also helps in building confidence amongst the project developers, lenders, investors and other stakeholders. This status drives the company to always maintain very high standards in each and every aspect of its operations. This focus on quality and innovation builds market trust, reinforcing Huasun’s reputation as a reliable and leading solar manufacturer. It also motivates the company to continue pushing the boundaries of solar technology to deliver superior products.

4. Huasun has achieved significant efficiency milestones with the Himalaya and Everest G12 Series HJT modules. Could you share more details about the technological improvements that have led to champion efficiencies of 26.5% and 26.41%, in mass production, respectively?

The significant efficiency milestones achieved with the Himalaya and Everest G12 Series HJT modules are the result of several technological improvements:

• Advanced Cell Design: Innovations in cell design, including the integration of 0BB technology and optimized cell structure, have contributed to higher efficiency.
• Enhanced Light Absorption: Improved light absorption techniques and the use of high-quality materials help capture and convert more sunlight into electricity.
• Reduced Losses: Minimization of electrical losses through advanced contact and interconnection technologies enhances overall cell performance.
• Precision Manufacturing: Enhanced manufacturing processes, such as two-step single printing (SP) technology, ensure higher accuracy and better cell performance.

These advancements have enabled Huasun to achieve champion efficiencies of 26.5% for the Himalaya series and 26.41% for the Everest G12 series, setting new standards in the solar industry.

5. Could you elaborate on the specific manufacturing processes, such as welding before lamination and two-step single printing (SP) technology, used in the production of 0BB cells? How do these processes ensure superior product quality and performance?

In the production of 0BB cells, Huasun employs several advanced manufacturing processes:

• Welding Before Lamination: This process involves welding the cells before they are laminated, which helps in achieving a more uniform and reliable connection between cells. This method reduces the risk of defects and enhances the overall durability of the module.
• Two-Step Single Printing (SP) Technology: This technique involves printing the cell’s front and back contacts in two separate steps, which allows for more precise control over the cell’s electrical properties. The improved accuracy in printing contributes to higher efficiency and better performance of the modules.

These processes ensure superior product quality by minimizing defects, enhancing cell performance and improving the overall reliability and longevity of the modules.

6. With the introduction of the Everest G12R Series modules, what key benefits do these rectangular cells offer over traditional square wafers, and how do they enhance the overall performance of photovoltaic projects?

The Everest G12R Series modules offer several key benefits over traditional square wafers:

• Higher Power Output: The larger rectangular wafers allow for increased power output per module, which can significantly enhance the overall energy production of a photovoltaic system.
• Reduced Module Count: The higher power output means fewer modules are needed to achieve the same energy production, leading to lower installation and material costs.
• Improved BOS Efficiency: With fewer modules required, Balance of System (BOS) costs, such as mounting structures and wiring, are reduced.
• Enhanced Performance: The rectangular design and advanced technology of the Everest G12R Series contribute to better efficiency and performance, optimizing the overall performance of photovoltaic projects.

7. The Everest G12R modules boast a maximum power output of 640W, surpassing other rectangular modules by 20W. What specific applications and scenarios are these modules best suited for, and how do they contribute to reducing Balance of System (BOS) costs and LCOE?

The Everest G12R module, is also a very special product in the Huasun’s product portfolio, with their maximum power output reaching upto 640W however maintaining the smaller dimensions, these modules are well-suited for almost all types of solar installations where high power density is crucial. These modules are ideal for utility-scale solar farms, commercial solar installations as well as large residential systems.  Currently all project developers who had anticipated their projects with 540/580w modules can take advantage of our G12R Everest modules and increase 40-60w additional output per panel and almost negligible change in the structure designs. By providing higher power output per module, the Everest G12R series reduces the number of modules needed for a given project size. This reduction in the number of modules lowers Balance of System (BOS) costs, including costs for mounting, wiring and inverters. Additionally, the increased efficiency and power output contribute to a lower Levelized Cost of Electricity (LCOE) by maximizing energy production and minimizing installation and operational costs.

8. With 20GW of HJT production capacity, how does Huasun plan to meet the anticipated surge in global demand for HJT modules, especially from Chinese state-owned enterprises, international investors, and project developers?

To meet the anticipated surge in global demand for HJT modules, Huasun has been strategically expanding its production capacity since establishment. The company has scaled up its HJT production to 20GW with four manufacturing bases being established in Xuancheng, Hefei, Wuxi and Dali in China.  As the world’s largest HJT manufacturer, Huasun is in full swing to meet the increasing demand from various market segments, including Chinese state-owned enterprises, international investors and project developers. By investing in advanced manufacturing facilities and technology, Huasun aims to ensure a steady supply of high-quality HJT modules to support global solar projects and maintain its competitive edge in the market.