Stoff2

STOFF2 was founded in Berlin in 2020 and aims to bring 100 % renewable energies to all sectors and applications of energy. Our innovative technology, the Zink-Zwischenschritt Electrolysis (ZZE), combines the functionality of an energy storage system and an electrolyser efficiently in one system.

The Zink-Zwischenschritt Electrolysis charges solar and wind power over 4 hours when they are abundantly available and cheap. The energy is safely stored as solid zinc within the electrolyser. When discharging over 12-24 hours, the ZZE produces green hydrogen out of the stored energy. Our system does not require critical raw materials such as lithium, cobalt and platinum and, unlike many other electrolyser technologies, does not require PFAS.

With the ZZE we are creating a completely new market, relieving the burden on the power grids, reducing the need for power grid extension and enabling a reliable supply of green hydrogen for industrial customers – on-site or for supply via the H2  grids.

Future called, said it’s great!

Our daily work at STOFF2 is to link electricity and hydrogen grids, fluctuating renewables, and stable H2 demand as well as public funding and private capital. A strong ecosystem helps us and our customers to implement faster and achieve greater impact.

Sebastian Sipp, Managing Director of STOFF2


This might also interest you

  • Climate Tech as the Backbone of Resilient Growth

    Climate tech is not only essential for decarbonization but also a strategic pillar for Europe’s economic security and long-term competitiveness. As geopolitical pressures and climate risks intensify, clean technologies – from renewables to digital grid solutions – form the backbone of a resilient future. The paper calls for faster execution, clearer policy signals, and stronger…

    Learn more: Climate Tech as the Backbone of Resilient Growth
  • Our Recommendations vs. Coalition Agreement 2025

    Position paper for the 2025 Federal Election Policy proposals from the climate tech ecosystem The economic situation in Germany is tense. Decisive political action is required in order to utilize the potential for innovation and growth in Germany. The aim must be to reduce energy costs for the economy, renew the country’s industrial substance and…

    Learn more: Our Recommendations vs. Coalition Agreement 2025
  • EU Climate Tech Manifesto

    Demands of the climate tech ecosystem for European policymakers Europe is at a crossroads: the continent’s economic strength and resilience have been increasingly challenged in recent years. The European Union (EU) must now come up with a clear strategy and smart measures to respond to these challenges. Smart economic policies, market-oriented mechanisms and strategic investments…

    Learn more: EU Climate Tech Manifesto