Interview

TECHNICAL DIRECTOR: SOUTH & CENTRAL ASIA JINKO SOLAR SOLAR PV MODULE

MR. SAI CHARAN KUPPILI

Q. What notable achievements and significant milestones has Jinko Solar attained in the past year? Jinko Solar being a Leader in Technology, Capacity Shipment, Market share and Manufacturing across the globe, topped the Leader board chart for 2022 and the same is getting continued for 2023 as well.
 
Few milestones achieved in recent past: Largest Global Solar Module Shipments: consistently topped the list of global solar module shipments over the years. Jinko Solar’s highquality modules and strong market presence have contributed to its success in terms of volume of shipments.
 
Industry Recognitions: we received several industry recognitions for our contributions to the solar industry. Included in Fortune’s Future 50 list, Deloitte’s Technology Fast 500 list, and BloombergNEF’s Tier 1 Module Supplier list, among
others. These recognitions highlight JKS strong market position and reputation.
 
Global Market Presence: Significant global presence with a strong customer base in both established and emerging solar markets. We have successfully expanded our operations and JKS modules were installed in various countries around the world, contributing to the growth of solar energy adoption globally.
 
Financial Performance: We consistently demonstrated our strong financial performance and reported robust revenue growth and profitability over the years, indicating our ability to compete effectively in the solar industry.
• TOPCon production ramped up from 15GW(2022) to 50-60 GW(e)
• Total Jinko Production capacity for 2023 will reach 90GW
• Best in class optimisations within TOPCon Technology
• Increased Power & Energy Densities with Jinko’s High efficiency Technology products
Overall, we achieved significant milestones and continues to play a crucial role in the global solar industry. With our emphasis on technological innovation, sustainability, and quality, JKS is wellpositioned to contribute to the growth and adoption of solar energy in the future.
 
Q. Could you share details about Jinko Solar’s recent initiatives or projects in the realm of solar energy?
 
Jinko Solar is committed to continuous innovation and technological advancements in solar PV modules by developing highly efficient modules, utilising advanced technologies such as TOPCon, PERC in both monofacial & bifacial variant modules and BIPV, which can generate more electricity from sunlight.
JinkoSolar has been a pioneer in developing highefficiency solar modules. Right from the initial days of
 
Multi Crystalline or PERC Products : Cheetah Series with 156.75mmx156.75mm- cell size with 380Wp to Tiger Pro with 182mm x 182mm with 580Wp ; to the recent TOPCon with 182mm x 182mm or any other Rectangular cell with the maximum power class of 630Wp. These advancements in efficiency have contributed to improved performance and increased energy generation. Developed certain new mechanism in the space of TOPCon with Selective Emitter configuration to reduce temperature coefficient in increasing power density and energy density.
Also made certain new innovations on the fronts of BESS segments with reduced auxiliary consumption for the solutions being provided by Jinko. Highly intelligent solutions are designed from the state of art of Jinko’s technology in reducing the levelised cost of storage (LCOS)
Sun TERA is one of our prominent solution in MWh markets, which is leading most of the markets with our 280Ah LFPe cell. Typical Sun TERA can come with high energy density of not less than 3.44MWh per 20’ container.
 
Q. How do you assess the current state of the renewable energy sector in India? What major trends do you anticipate shaping the sector in the coming years?
 
The current state of the renewable energy sector in India, particularly in solar PV, is quite promising. Solar Capacity: India has made significant progress in solar energy installations, with a total installed solar capacity of over 60 gigawatts (GW) as of FY 2022-23.
 
Policy Initiatives: The Indian government has introduced several policy initiatives to promote solar energy, including incentives such as subsidies, tax benefits, and competitive bidding for projects.
 
International Collaboration: India has actively participated in international collaborations like the International Solar Alliance (ISA) to promote solar energy deployment at a global level.
 
Cost Reduction: The cost of solar PV modules has significantly reduced over the years, making solar power more affordable and competitive with conventional energy sources.
 
Thus, it’s need of an hour to emerge for the market to consider high energy density and high power density technologies like TOPCon- Tiger Neo kind of leading PV Technologies and BESS with LFPe – Sun GIGA or Sun TERA kind of Storage solutions to cater the immediate and intermediate needs of market applications .
Overall, the renewable energy sector in India, including solar PV and BESS, is in a positive trajectory. However, challenges such as land availability, financing, and grid integration need to be addressed to achieve the full potential of solar power in the country.
 
Q. How has Jinko Solar adapted its modules to better align with the specific needs of the Indian market?
 
Are these adaptations distinct from the modules offered in the global market? Global markets tasted the benefit of TOPCon during 2022 and majority of matured markets transformed completely towards TOPCon, which is the reason for most of the Global PV Manufacturers to opt TOPCon technology as mainstream technology manufacturing with expected capacity to reach 600GW by 2024.
Indian market is in the verge of transformation from PERC to TOPCon because of constraints limited to BCD, ALMM, capacity availability from TOPCon manufacturers, economic viability on manufacturing cost as compared with PERC. But most of the developers started considering TOPCon on all their futuristic needs and with the same reason, we can notice Indian manufacturers also started to consider SMBB stringers with in their new manufacturing lines.
 
Q. What ongoing research and development initiatives are your company undertaking to further advance PV module and battery energy storage technologies?
 
There are several technological advancements in solar PV that are expected to contribute to the growth of the sector in India. High-efficiency Solar Products: Research and development efforts are focused on improving the efficiency of solar cells. As such TOPCon will be leading all new variants for the next 8-12 quarters on commercial sense, and as a Technology Leader Jinko is also focusing more on the enhanced development of TOPCon with more advanced variants of TOPCon to leverage better benefits of N type and these evolved technology products will be available in both Monofacial and Bifacial variants. However, Advanced solar cell technologies like multi-junction, tandem, and perovskite cells are being developed to achieve higher conversion efficiencies, which can lead to increased power generation from the same area of solar panels, but is still under development stage only. Bifacial Solar Panels: Bifacial solar panels have the ability to capture sunlight from both sides, increasing their overall energy generation. This technology is particularly beneficial in areas with highly reflective surfaces with better albedo factors. Since most of the installations happen on barren lands, which has high moisture resistance can display better reflectivity sensitivities to have better gain with bifacial kind of variants.
Energy Storage Solutions: The integration of energy storage systems with solar PV plants is gaining momentum. Battery storage technologies enable storing excess solar energy generated during the day for use during periods of low or no sunlight, improving grid stability and enabling solar power to be available round the clock. BESS solutions with Lithium Ferrous Phosphate batteries can relatively provide better energy density, better backup with high depth of discharge and charge/ discharge profile when compared with conventional Advanced lead acid batteries.
BIPV: Building Integrated PV products from Jinko Solar comes in different variants on the name of curtain raiser with wide range of colour variants as per the need and demand of a specific customer.
Thus, customised options are available within BIPV products with wide range of power class upto 600Wp as per the absorption co-efficient of colour required for Solar PV Module. These technological advancements are expected to drive the growth of the solar PV sector in India by improving efficiency, reducing costs, increasing flexibility, and enabling better integration with existing energy infrastructure.
 
Q. Could you provide insights into the recycling and disposal processes for your products?
 
Solar PV module recycling and disposal have become important considerations in the renewable energy industry. As solar installations continue to grow, the proper management of end-of-life modules is crucial for environmental sustainability. Recycling Processes: Currently, the most common method of recycling solar PV modules is through mechanical processes. These processes involve the separation and recovery of valuable materials such as silicon, glass, aluminum, and copper, which can be reused in various industries. Thus, we have Global collaboration with PV Cycle to dispose our modules as per the end client need at a nominal cost for collection and transportation in an effective and efficient recycling with no impact on environment, which will be collected by recycling agency from end client.
 
Q. How do you minimize environmental impact while handling end-of-life components?
 
To minimize the environmental impact while handling the end-of-life components of solar PV modules,
It is important to handle and store end-of-life modules carefully to prevent breakage and the release of potentially harmful materials. Implementing proper protocols for handling, transportation, and storage can help minimise environmental risks. Thus by following JKS maintenance manuals can provide better insights in proper handling and storage. When dismantling modules, it’s important to ensure that all components are properly separated and sorted. This allows for the efficient recovery of valuable materials and the safe disposal of any hazardous substances. Following best practices for dismantling and recycling can prevent environmental contamination. Innovations in recycling technologies aim to reduce environmental impact. Chemical processes and advanced sorting techniques can help efficiently recover valuable materials from end-of-life modules while minimising waste and pollution. Investing in and utilising these environmentally friendly technologies can enhance recycling efforts.
 
Q. How does your company approach the seamless integration of PV modules with the grid?
 
Integration of PV modules with the grid involves connecting solar photovoltaic systems to the existing electrical grid infrastructure. This integration enables the transfer of electricity generated by PV modules to the grid for distribution and consumption by end-users. Here are some common approaches to PV module integration:
• Grid Tied Systems
• Microgrids
• Hybrid Grid Integration Technologies as per local statutory regulations
• Virtual Power Plants
Jinko Solar’s PV Technology Modules can be used on all kinds of above applications and as a module manufacturer, we provide limitations only on the DC side of the interconnecting system with regulation on the Module withstanding voltage as 1500V DC and Series fuse rating specific to current as 25A/30A as per the module variant. Thus, monitoring these two parameters of the module can protect major equipment on DC side of the system on any system. Thus, it’s important to consider local regulations, grid infrastructure capabilities, and the specific goals and requirements of the project when choosing the approach for integrating PV modules with the grid.
 
Q. Can you elaborate on the durability and reliability features of your modules? How do they withstand extreme weather events and ensure long-term performance?
 
All Jinko Solar’s TOPCon products comes with 12 years product and 30 years performance warranties in place, specific to durability.
However, on the fronts of reliability, more specific to the BOM composition of Module which is being used by us on all our high technology variant products comes with stringent quality guidelines considered within our line on internal quality control or in process quality control or even during pre shipment inspection activities, which will nullify the constraints and address all concerns specific to extreme weather conditions. Thus, better reliability on Thermal cycle, Humidity freeze, Dampheat, LID, PID or LeTID etc., can be expected with all Jinko Solar’s Tiger Pro or Tiger Neo products when compared with normal P type Technology products from other manufacturers. PVEL scorecard of Jinko products for the last consecutive 7 years or other Third party test reports speak loud about our product reliability.
 
Q. How do you perceive the future of the Indian solar industry and the role PV modules will play in achieving the country’s renewable energy targets?
 
The future of the Indian solar industry looks promising. India has set ambitious renewable energy targets, including a target of achieving 450 GW of renewable energy capacity by 2030. Solar power is expected to play a significant role in achieving these targets, given India’s abundant solar resources. The role of PV modules will continue to be crucial in the growth of the Indian solar industry. PV modules are the building blocks of solar photovoltaic systems and are responsible for converting sunlight into electricity. Advancements in PV module technology, such as higher efficiency, high energy density, lower costs, integration with energy storage etc., have made solar energy more competitive and economically viable. However, with ongoing advancements and supportive government
policies, solar power has the potential to become a significant contributor to India’s energy mix in the coming years