Solex Energy Limited stands at the forefront of India’s solar revolution, driving a sustainable future through cutting-edge photovoltaic technology. Headquartered in Gujarat, the company manufactures high-efficiency solar modules and delivers comprehensive turnkey EPC solutions for residential, commercial, and industrial sectors.
With innovation at its core, Solex offers advanced products such as N-type TOPCon and bifacial modules, each backed by robust warranties and designed to meet the highest global standards. Its scalable, quality-driven manufacturing processes reflect a steadfast commitment to excellence and sustainability. Guided by an experienced leadership team, Solex blends technology, craftsmanship, and environmental responsibility to accelerate India’s clean energy transition.
In an exclusive conversation with The Interview World, Dr. Chetan Shah, Chairman and Managing Director of Solex Energy Ltd., offers deep insights into the pioneering solar technologies introduced through the company’s MoU with ISC Konstanz. He outlines the expected timeline for their market launch, details the scale of investment needed for upcoming solar projects, and evaluates India’s solar power landscape by 2030. Moreover, Dr. Shah addresses one of the sector’s pressing concerns, the responsible disposal of lithium batteries, and proposes effective solutions.
The following highlights capture the essence of his thought-provoking discussion.
Q: What innovative and cutting-edge solar technologies is ISC Konstanz introducing through its MoU collaboration with Solex Energy?
A: ISC Konstanz, one of Germany’s most renowned research institutions, stands at the forefront of solar innovation. The organization pioneered the rear contact technology, widely known today as back-contact technology, a breakthrough that transformed the solar industry. After developing this technology years ago, ISC Konstanz successfully transferred it to Chinese manufacturers, enabling its large-scale commercial adoption. As the original creator of this game-changing innovation, ISC continues to lead advancements in high-efficiency solar solutions.
Through our strategic association and consortium, we aim to co-develop the next generation of rear-contact solar technology, one that delivers even greater efficiency, reliability, and long-term performance. This collaboration represents a significant step toward shaping the future of solar power on a global scale.
Beyond research and innovation, ISC Konstanz excels in process control and manufacturing optimization. Unlike module production, solar cell fabrication is a complex and precision-driven process. ISC’s technical expertise will guide us in refining process parameters, enhancing product performance, and maximizing manufacturing yields, an ongoing challenge across the global solar industry.
Furthermore, as we expand our investments into wafer and ingot production, ISC’s experience will play a pivotal role in helping us establish cost-effective, high-efficiency manufacturing capabilities. Their guidance will enable us to achieve superior productivity while maintaining sustainability and competitiveness in the rapidly evolving solar landscape.
Q: When will this innovative solar product be launched and made available in the market?
A: By June 2026, we plan to bring this breakthrough technology to market, reaching customers across India, Europe, and the United States.
Q: What is the estimated investment required to implement projects of this scale and nature?
A: We are committing an investment of USD 1.5 billion by 2030 to build a 10-gigawatt solar module manufacturing capacity. Of this, 4 gigawatts have already been completed, and we are now expanding to an additional 6 gigawatts of modules along with 10 gigawatts of solar cell capacity.
Our solar cell production will encompass multiple advanced technologies. We are beginning with 2.2 gigawatts of TOPCon+ technology and will subsequently invest in back-contact technology to enhance efficiency and performance across the remaining capacity.
In parallel, we are also investing in wafer and ingot manufacturing, ensuring full vertical integration across the solar value chain.
By 2030, we aim to complete this transformative journey and establish a fully integrated 10-gigawatt solar manufacturing ecosystem.
Q: What is the projected scenario for solar power in India by 2030, and how is the sector expected to grow?
A: India currently installs around 30 gigawatts of solar capacity every year, and the potential exists to expand this to over 50 gigawatts annually. The opportunity ahead is immense.
Until recently, growth was constrained by limitations in transmission infrastructure, substations, and grid capacity. However, both state and national governments are actively addressing these challenges. The development of a robust national transmission grid is well underway, laying the foundation for a significant acceleration in solar deployment.
Moreover, the integration of battery storage technologies is set to transform India’s solar landscape. Traditionally, solar energy generation has been limited to daytime use due to the lack of efficient storage options. Now, with rapid advances in battery energy storage systems (BESS), surplus electricity generated during the day can be stored and utilized at night, resolving the long-standing issue of grid balancing and round-the-clock energy availability.
As these technologies mature and infrastructure strengthens, India’s solar potential will more than double. In fact, with the widespread adoption of battery storage, the country is well positioned to surpass 50 gigawatts of annual solar capacity and move toward becoming a global leader in renewable energy deployment.
Q: Given the lithium disposal challenges with batteries, what technologies or innovations are emerging to address and manage this issue effectively?
A: Lithium battery technology is evolving rapidly, with continuous improvements in efficiency, lifespan, and sustainability. At the same time, researchers are developing alternative polymer-based energy storage technologies that could further reduce global dependence on lithium.
Given the growing global concern over battery disposal and environmental impact, extensive efforts are underway to advance recycling and reuse solutions. Leading institutions and innovators worldwide are actively developing circular systems to recover materials and minimize waste.
Therefore, I am confident that by the time large-scale deployment creates significant end-of-life challenges, effective and sustainable solutions will already be in place.
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This is one of the best explanations I’ve read on this topic.
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