NTPC Simhadri to pilot indigenous iron-air battery for long-duration energy storage

18 August 2026National

A pilot project at NTPC Simhadri Thermal Power Station (Andhra Pradesh) will evaluate an indigenous Iron-Air Battery for Long-Duration Energy Storage (LDES), implemented by the Atal Incubation Centre - Anna University (AIC-AU) with technology partner Meine Electric. The 'Made in India' battery is designed for a 6-hour charge / 18-hour discharge cycle to support 24x7 clean, dispatchable power and enhance grid flexibility. The pilot will generate operational data to benchmark the technology for future commercial-scale deployment.

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NTPC founded: 1975; HQ: New Delhi; a Maharatna CPSE | Long-Duration Energy Storage (LDES) complements lithium-ion for grid balancing beyond 4-8 hours | Iron-air batteries use reversible rusting of iron for storage

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