Industrial, electronic, and specialty gas manufacturer Inox Air Products (INOXAP) has entered into long-term partnerships with Grew Energy and ReNew Energy Global to supply ultra-high-purity (UHP) nitrogen for their upcoming solar cell manufacturing facilities.

Inox Air will supply nitrogen to ReNew’s 4 GW TOPCon solar cell manufacturing facility at Dholera, Gujarat, and to Grew Energy’s 3 GW solar cell manufacturing facility at Narmadapuram, Madhya Pradesh.

Grew’s 3 GW solar manufacturing facility is being developed with an investment of ₹30 billion (~$345 million) and is expected to be operational by 2026.

In May 2025, ReNew secured an investment of ₹8.7 billion (~$100 million) from British International Investment to construct the 4 GW TOPCon cell facility.

As part of this strategic engagement, INOXAP will develop a state-of-the-art air separation unit for Renew and is expected to be fully operation by the end of next year. The ASU will be set up to meet the tailored, stringent purity and consistency requirements for the manufacturing of solar cells.

INOXAP will also invest in and develop a dedicated pipeline network from its existing ASU in Narmadapuram to ensure reliableround-the-clock supplies.

Nitrogen gas is used to keep the solar cell manufacturing environment free of oxygen and moisture. TOPCon cells are extremely sensitive to contamination; oxygen or humidity can ruin wafer surfaces or doped layers.

INOXAP offers a portfolio of gases, equipment, and services, supported by a manufacturing capacity of more than 4,700 TPD of liquid gases, delivered from more than 50 operating locations.

Expanding its backward integration capabilities, ReNew is setting up a 6 GW solar ingot-wafer manufacturing plant as part of a ₹600 billion (~$6.76 billion) plan to develop multiple green energy projects in Andhra Pradesh.

In September this year, GREW Solar raised ₹3 billion (~$34.09 million) from a group of investors, including those from GeeCee Holdings. Grew Solar will use the funds to develop new products, strengthen its technological infrastructure, and expand capacity across its facilities.