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NTPC rolls out CO2 battery at NTPC Kudgi
Industry News- Jan 29,25
Unlike BESS, which is based on electrochemistry, the CO2 battery is based specialised electro-mechanical turbomachinery.
NTPC Ltd, India’s largest integrated power utility, launches a CO2 battery energy storage technology—a significant milestone in its journey towards sustainable and innovative energy solutions. This project is undertaken by NETRA, the R&D wing of NTPC, and will be executed in collaboration with M/s Triveni Turbine Limited and M/s Energy Dome, Italy.
The CO2 battery with an energy capacity of 160 MWHr shall be setup at NTPC Kudgi. This project forms part of NTPC's broader strategy to diversify its energy portfolio and increase renewable power generation within its total capacity. Additionally, the CO2 battery aligns with the Government of India's ‘Make in India’ and ‘Atmanirbhar Bharat’ initiatives.
Unlike BESS, which is based on electrochemistry, the CO2 battery is based specialised electro-mechanical turbomachinery. It operates on ‘Closed Brayton Thermodynamic Cycle’ with anhydrous CO2 as the process fluid. Electricity is ‘charged’ and ‘discharged’ by manipulating ‘physical parameters’ of CO2 from vapour to liquid stage and vice-a-versa.
Shri Gurdeep Singh, CMD, NTPC, said “This is a landmark development in the domain of ‘Long Duration Energy Storage’ (LDES). NTPC is proud to be in the technology forefront and setup the ‘CO2 Battery’ at its Kudgi station. With several advantages viz very long lifetime (>25 year), no need of critical minerals viz Lithium, Cobalt, topography agnostic, minimal performance degradation - unlike BESS where intricate electrochemistry is involved, very high depth of discharge (100%) - successful demonstration of this technology shall open new vistas in the field of ‘Electrical Energy Storage’.
Claudio Spadacini, Founder & CEO, Energy Dome, further added that the CO2 battery will further advance NTPC’s decarbonisation goals and round-the-clock (RTC) power delivery while strengthening India’s local supply chain through domestic sourcing.
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