IIT Madras Startup Develops Long-Duration Energy Storage with Zinc Technology

Sthyr Energy has created a system that converts excess renewable energy into metallic zinc, allowing for storage over months. When needed, the zinc can be converted back into electricity through a zinc air battery, achieving an energy density of 550 Wh/l—three times that of lithium-ion batteries.

This technology aims to solve the problem of energy curtailment prevalent in India's renewable energy sector, which suffers from a lack of effective long-duration storage solutions. Although still in early stages, if successful at scale, this innovation could significantly impact renewable energy utilization and sustainability.