Clean Energy
Day & Night

Energy Storage For Renewable Energies

Making 100% renewable energy available day and night, for a fairer and cleaner world – that’s the big challenge of our time. With the Iron Salt Battery, we at VoltStorage are developing an innovative and groundbreaking technology and solution for this.

The Iron Salt Battery is aimed at energy providers, grid operators or large industrial companies to be able to provide baseload with renewable energies safely and reliably. It not only stores energy from wind or sun and discharges over long durations, it is also environmentally friendly, scalable and at significantly lower costs than other options. 

Thus, it makes a significant contribution to a comprehensive decarbonisation of our energy landscape as well as to more energy security and energy autarky.

For A Tomorrow Worth Living In

Driving Forward The Energy Transition With Innovation, Boldness And Responsibility

The success story of VoltStorage begins in 2016 as a Munich-based start-up. In our technology and product development, we rely on the non-critical raw materials iron and salt. With them, we are developing a battery specifically for Long Duration Energy Storage (LDES) applications as an important component for a climate-friendly energy future.

As a young company, we are building on the innovative strength, expertise and motivation of our international employees from almost 20 countries. Together, we are committed to mastering the challenges of the energy transition and thus laying the foundations for a sustainable future.

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Store Green Energy Sustainably

Our Iron Salt Battery leverages the proven technology of flow batteries. It is cost-effective, highly reliable, and long-lasting. Importantly, it contains no rare earth elements or conflict minerals. Furthermore, with core materials that are fully recyclable, it stands out as a particularly climate-friendly solution.

Benefits at a Glance


  • 01
    Economical: Cost-effective provision of long-duration storage
  • 02
    Environmentally friendly: Without rare or conflict-related raw materials and recyclable battery technology
  • 03
    Durable: More than 10,000 charging cycles without loss of storage capacity
  • 04
    Safe: Storage medium consists of non-inflamable components
  • 05
    Flexibility: Power and capacity can be scaled independently

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