About us

stands for Hydro Service International. The company was established in 1982 as HSI Hydro Engineering GmbH by two mechanical engineers: Harald Hersel and Herbert Pilz. By that time, Hersel and Pilz had already had gained more than 24 years’ experience in the construction of water turbines with two turbine manufacturers, and in the position of planner and consultant at a major international consulting firm. In 1997, after a 7-year stint at a leading power company in the field of hydroelectric power plants on the Moselle and Saar rivers and a subsequent degree in engineering, Peter Marx joined HSI, becoming a managing partner from 1999 onwards.

The firm’s premises are located in the port of Trier. Since 2015, the company has been part of internationally active CETERUM-Holding GmbH.

The company owners’ expertise, the high level of innovation and ongoing staff training make HSI what it is today, and make us able to realize your projects confidently and professionally.
The firm’s clients include
energy utilities, municipalities and private hydropower operators. The company operates worldwide.

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