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ProductUpdated on 28 January 2026

Greenest and cheapest MW-minute battery storage

CEO at Geyser Batteries

Mikkeli, Finland

About

Geyser Batteries is developing affordable, and sustainable high-power batteries, commercialising our proprietary and revolutionary water-based electrochemistry. Within 6 years, we created a new class of energy storage – a unique hybrid between supercapacitors and batteries that doesn’t rely on Li-ion technology and uses only low-cost and sustainable materials and production methods. 

Our batteries are the ideal solution for cheap and green MW-minute storage. They: 

  • Respond in less than 1 millisecond,

  • Can be fully charged in 3 minutes,

  • Store up to 5 times more energy than supercapacitors, and

  • Last up to 1 million cycles.

We produce batteries from sustainable, abundant, and cheap materials like carbon black for electrodes, at low-CAPEX facilities using standard manufacturing methods.

Today, we are developing the greenest and cheapest MW-minute energy storage technology. 

And for tomorrow, we are set to build the first carbon-negative battery.

Applies to

  • Automotive, Batteries, Transport & Logistics

Organisation

Geyser Batteries

Start-up company

Mikkeli, Finland

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