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Deep Sea Energy Storage is constructing and operating subsea pumped hydro storages.


Michael Difliff discovers the great wind potential of Aegean islands. Cooperation with Cycladic project developer starts.


Kirein Franck joins the efforts to find suitable finance for wind turbines.


German foundation shows interest in long-term investment. First due diligence is finalised. Sifnos Island Copperative discusses off-grid situation and energy storage solutions with Michael.


Michael and Kirein discuss new “Storing Energy at the SEA” technology with researchers at Fraunhofer IEE Institute, Kassel.

Michael meets Prof. Dimitris Katsprakakis in Crete. Prof. Katsaprakakis has written the first comprehensive study on future RES Hybrid Power Plant in Sifnos.

Michael and Kirein commission new analysis from Fraunhofer IEE: “Optimization of the energy supply system of the island Sifnos”


Fraunhofer IEE finishes the report “Optimization of the energy supply system of the island Sifnos”. One of the conclusions: Sifnos is fitting for a pilot “Deep Sea Energy Storage”.

Michael and Kirein presented the study at meetings of Greek RES entrepreneurs in Frankfurt.

“Deep Sea Energy Storage” is selected to present at the “Energy Lab” of EUSEW, European Sustainable Energy Week, Brussels.