Tata Steel, in partnership with Kraftblock GmbH, a German energy transition technology startup, is close to completing a year of reliable operations of a thermal energy storage system at Sinter Plant No.3 (SP3) at its Jamshedpur Works.
Sintering is the process of thermal agglomeration of iron ore fines into larger, stronger, rock-like lumps (called “sinter”) that are suitable to be fed into a blast furnace to make iron.
The system is designed to recover high‑temperature waste heat from the sintering process that would normally be released into the atmosphere, store it efficiently and use it to warm process water required in the sintering stage.
The process helps reduce fuel use, improve productivity and lower carbon emissions by 22000 tn-CO2 annually .
Chaitanya Bhanu, Vice President – Operations, Tata Steel Jamshedpur, said the Kraftblock thermal energy storage system demonstrates how high-temperature waste heat from an energy-intensive stage of steelmaking can be captured and reused in the process.
The system demonstrates a practical and scalable pathway to more energy‑efficient steelmaking, he said.
Dr Martin Schichtel, CEO & Co-founder, Kraftblock, said the project demonstrates the feasibility of heat recovery and storage in the steel industry. There are many use cases in steelmaking, from furnaces to flaring. With sustainable thermal storage progress, the company supports the steel industry in their efforts to become more energy- and cost-efficient, he said.
With successful implementation at SP3, multiple cross‑deployment opportunities can be unlocked across high‑temperature furnaces and flaring zones.
Published on February 27, 2026
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