Pump-storage plant Leun

In 2012, we were assigned with the planning of the pump-storage power plant in Leun. These power plants have an important role to play – as currently the only option they are able to economically save energy on a large scale. The client had the goal to use the existing topographical gradient between Leuner Burg and Leuner surface mining 1 energetically. The topographical conditions concerning the necessary slope conditions are given with 340 m + NN ground elevation and a seawater level of 153 m + NN. As well as the required funicular water volume of ~ 450.000m³ in the upper and lower reservoirs.

A special feature of the pump-storage power plant Leun are the parallel arranged penstocks which allow constant pump- or turbine readiness. A small hydropower Pelton turbine set contributes  – at an excellent drop height – a small amount of water to generate base load, benefits both regionally and locally the nearby city of Leun. The pump-storage plant close to the river Lahn in Leun with 40 MW of installed capacity can feed secondary energy for 4 hours in the energy grid. It fits to be integrated into the landscape of future German energy revolution. The Hermann Hoffmann Group intends to establish a regional grid with its wind turbines and the pump-storage plant (PHS) and is in the final phase of the approval process.