A NATIONAL INVENTORY OF Hydrogen Production POTENTIAL from Archimedean Small Hydropower SYSTEMS in Greece

Alkistis Stergiopoulou, Institut für Wasserwirtschaft, Hydrologie und Konstruktiven Wasserbau, B.O.K.U. University, Muthgasse 18, 1190 Vienna, (actually Senior Process Engineer at the VTU Engineering in Vienna, Office Campus Gasometer, Guglasse 15/4a/1.OG, 1100 Vienna), Lindengasse 15, 1070 Vienna, Austria

Vassilios Stergiopoulos, Professor, ASPETE, School of Pedagogical and Technological Education, Department of Civil Engineering Educators, ASPETE Campus, Eirini Station, 15122 Amarousio, Athens, Greece

Abstract
This paper presents a comprehensive inventory of the potential for green hydrogen production derived from the Archimedean small hydropower resources of Greece. The assessment is based on hydrological and geographical data from the country’s 14 Water Districts and adopts a holistic methodology to estimate the total theoretical hydropower potential exploitable through Archimedean Screw Turbines (ASTs). The theoretical Archimedean hydropower potential is estimated to reach several TWh per year, corresponding to an installed AST capacity in the order of several thousand megawatts, with notable values of specific capacity and capacity density. Building upon this energy assessment, the study evaluates the associated hydrogen production potential through water electrolysis under different efficiency and operational scenarios. The results highlight the significant, yet largely untapped, opportunity for coupling environmentally friendly small-scale hydropower with green hydrogen production in Greece.

Keywords
Hydrogen Production, Archimedean Screw Turbines, Renewable Energy, Small Hydro, Greek Hydropotential

Cite this paper
Alkistis Stergiopoulou, Vassilios Stergiopoulos, A NATIONAL INVENTORY OF Hydrogen Production POTENTIAL from Archimedean Small Hydropower SYSTEMS in Greece , SCIREA Journal of Energy. Volume 11, Issue 1, February 2026 | PP. 1-13. 10.54647/energy480270

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