TCG's Sodium Leap: The Future of Indian Batteries

The Chatterjee Group (TCG) is exploring the commercial production of sodium-ion batteries, with a focus on cell manufacturing.

Developed by TCG’s Research Institute for Sustainable Energy (RISE), the batteries are made entirely using India-sourced materials. They can charge up to 94% in just five minutes and deliver an energy density of 180 Wh/kg, comparable to leading lithium–iron phosphate (LFP) technologies. Being free of cobalt, nickel, copper, and lithium, the technology significantly reduces dependence on global supply chains for critical minerals. With strong potential across electric mobility, grid-scale storage, and off-grid applications, sodium-ion batteries could become a major enabler of India’s energy transition.

A commercial rollout—requiring an estimated investment of USD 10–12 billion—may take place within the next two to three years, contingent on the development of a robust domestic supply chain. Additionally, TCG CREST, now recognised as a deemed-to-be university, is advancing research in green hydrogen systems as part of wider sustainable energy initiatives.

News by Rahul Yelligetti.