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Jaipur-based Insolation Energy Limited (INA Solar), through its subsidiary Insolation Green Energy Private Limited, has entered into a five-year partnership with US-based Caelux Corporation.
Under the partnership, the companies plan to commercialise 3 GW of solar module manufacturing  by integrating Caelux’s Energy Producing Glass technology with INA Solar’s N-type TOPCon manufacturing platform. The collaboration aims to develop high-efficiency Hybrid-Tandem™ solar modules, with commercial production targeting module efficiencies of up to 29% by 2028.
The technology combines TOPCon solar cells with a perovskite-based, power-generating glass layer designed to boost energy generation, increase power density and reduce the levelised cost of electricity (LCOE). The companies will collaborate on technology validation, manufacturing readiness and applicable regulatory approvals, including compliance with the Approved List of Models and Manufacturers (ALMM) requirements.
Commenting on the partnership, Manish Gupta, Chairman of Insolation Energy Limited, said, “This collaboration marks an important milestone for INA Solar. By combining advanced Perovskite technology with our TOPCon manufacturing capabilities, we aim to accelerate the development of high-efficiency solar modules and contribute to India’s renewable energy ambitions.”
Vikas Jain, Managing Director of Insolation Energy Limited, added, “The partnership strengthens our focus on building an integrated solar manufacturing ecosystem. We remain committed to innovation, advanced technology and delivering high-performance solar solutions.”
Scott Graybeal, CEO of Caelux Corporation, said, “Our partnership with INA Solar is an important step towards bringing next-generation solar technology into commercial production at scale in India. With this agreement, Caelux’s global contracted volume with module manufacturers exceeds 25 GW, validating Caelux’s technology and market approach.”
Vish Iyer, Managing Director, India and West Asia, at Caelux Corporation, said, “Integrating Energy Producing Glass with TOPCon technology represents a significant step towards the Indian market benefiting from ultra-high power density solar modules.”
INA Solar currently operates three solar module manufacturing facilities in Jaipur, Rajasthan, with a combined annual capacity of 5.5 GW. The company is also developing a 4.5 GW TOPCon solar cell manufacturing facility and an 18,000 MTA aluminium frame manufacturing facility in Narmadapuram, Madhya Pradesh.
Its product portfolio includes TOPCon and Mono PERC modules ranging from 500 Wp to 635 Wp, along with engineering, procurement and construction (EPC) services.
The company also has an independent power producer (IPP) portfolio of approximately 400 MW. Founded in 2015 and headquartered in Jaipur, Rajasthan, Insolation Energy Limited is listed on the NSE and BSE.
Headquartered in Baldwin Park, California, Caelux Corporation specialises in perovskite solar technology. Its proprietary Energy Producing Glass technology transforms the top glass layer of solar modules into an additional power-generating layer, increasing power density and improving solar project economics.
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