Rayzon Solar and Caelux sign 5 GW deal to make perovskite-silicon modules in India

Indian solar manufacturer Rayzon Solar has reportedly entered a five-year partnership with US-based perovskite technology company Caelux to produce solar modules in India. The agreement covers 5 GW of manufacturing capacity and pairs Caelux's energy-producing solar glass with Rayzon's TOPCon modules, yielding hybrid perovskite-silicon modules with efficiencies of up to 28%.

Caelux's technology replaces a module's conventional top glass with a power-generating perovskite layer, turning the cover glass itself into a second power-generation layer - an approach the company calls a hybrid tandem module. Because the perovskite is integrated at the glass rather than built into the cell from scratch, the method adds a power-generating layer to an otherwise standard silicon module, raising power density and allowing more electricity to be generated from the same surface area.

Rayzon plans to integrate the technology into its 11.3 GW bifacial module manufacturing platform. The company operates ALMM-listed facilities in Kim and Kosamba, in Gujarat's Surat district. Both partners have framed the deal around India's "Make in India" initiative and the goal of strengthening domestic solar manufacturing as the country scales up renewable deployment and local production.

According to the companies, early deployments are already underway, with commercial-scale volumes expected to be available by 2028. The resulting products are expected to be eligible for India's government-tendered utility-scale solar market, supported by the Ministry of New and Renewable Energy's Production Linked Incentive (PLI) program and the Approved List of Models and Manufacturers (ALMM) framework.

"We are dedicated to fulfilling India's vision of establishing world-class, high-quality solar manufacturing at scale. By partnering with Caelux, we are furthering our technology leadership and strengthening India's position at the forefront of next-generation solar manufacturing," said Chirag Nakrani, Co-Founder and Managing Director of Rayzon Solar.

"This partnership accelerates our capability to domestically manufacture at the efficiency frontier and at the scale India needs to meet its ambitious clean energy goals of 500 GW by 2030," said Amit Barve, CEO of Rayzon Solar.

For Caelux, the deal is part of a wider international expansion. CEO Scott Graybeal said India is a strategic market for the company: "As India is one of the top solar manufacturing countries in the world, it is a strategic destination for us. This partnership is a critical step in Caelux's growth trajectory as we look to scale our technology globally."

Vish Iyer, Managing Director, India and West Asia at Caelux Corporation, added: "Having spent my career supporting both downstream project development and solar manufacturing, I am excited about the massive impact that this partnership will have for the Indian solar market."

The Rayzon agreement follows a separate five-year, 3 GW partnership Caelux announced earlier in 2026 with module manufacturer Solx, which pairs Caelux's Active Glass with US-produced Suniva silicon cells for the American market - an indication of the company's push to deploy its perovskite-glass technology across multiple regions.