Author(s): Jeremy D. Bricker; Håkan Nilsson; Pal-Tore Selbo Storli; Daan P. K. Truijen; Jeroen D. M. de Kooning; Antonio Laguna; Kristina Terheiden; Bernd Engel; Nils Goseberg; Roelof Moll
Keywords: Hydrolink; pumped hydro storage; renewable energy transition; computational fluid dynamics; hydraulic laboratory experiments; dam design
Penetration of intermittent renewable energy sources into the power grid requires large-scale energy storage to ensure grid stability. Pumped Hydro Energy Storage (PHES) is among the most mature, environmentally friendly, and economical energy storage technologies, but has traditionally only been feasible at sites with large natural topographic gradients. ALPHEUS addresses this by developing reversible pump-turbines efficient at low heads, that operate between an enclosed inner basin (that functions as the upper or lower reservoir) and a shallow sea or lake.