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Deeptech Startup Sthyr Energy Secures $1 Mn to Advance Zinc-Air Battery Innovation

Sthyr Energy was founded by Gunjan Kapadia, Akhil Kongara, and Muhammed Hamdan, all researchers from IIT Madras
Deeptech Startup Sthyr Energy Secures $1 Million to Advance Zinc-Air Battery Innovation

IIT Madras-incubated startup Sthyr Energy has raised $1 million in seed funding, led by Speciale Invest and supported by Antares Ventures, reported Economic Times. The funding will accelerate the development of their novel mechanically rechargeable Zinc-Air battery system, designed for long-duration, grid-scale energy storage.

What Makes Sthyr Stand Out

  • Mechanically rechargeable Zinc-Air battery architecture
  • 100+ hours of storage ideal for seasonal and remote grid use
  • Uses non-flammable, water-based electrolytes for safety
  • No rare earth materials; built from locally available resources
  • Decoupled energy and power components for modular scaling
  • Targets fossil-free peaker plant replacement and microgrids

Comparison with Other Energy Storage Solutions

Lithium-Ion Batteries

  • 4–6 hour duration
  • Safety concerns due to thermal runaway
  • Dependence on imported metals like cobalt and lithium
  • Suited for EVs and short-duration balancing

Flow Batteries

  • 6–12 hours duration, extendable
  • Generally safe but bulky systems
  • Uses vanadium or other redox materials
  • Costly upfront, best for frequent cycling

Green Hydrogen

  • Storage duration from days to weeks
  • Challenges with storage and flammability
  • Involves electrolyzers and fuel cells
  • Still expensive with energy conversion inefficiencies
Sthyr Energy was founded by Gunjan Kapadia, Akhil Kongara, and Muhammed Hamdan, all researchers from IIT Madras. Gunjan serves as the CEO, Akhil as the CTO, and Hamdan as the COO. Their collaboration stems from over five years of foundational research at IIT-M, where they set out to rethink battery architecture for long-duration energy storage.

The Deeptech founders are quite the powerhouse trio—each bringing technical depth and a mission-driven mindset to the table.

Sthyr’s Zinc-Air solution could prove transformative for India’s renewable grid, microgrids in remote areas, and as a cost-effective alternative to fossil-based peaker plants—marking a significant step toward energy independence and resilience.
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