Wasserkraftwerk Haag

Founded in 1939, Wasserkraftwerk Haag is a family-owned headquartered in Rotenburg an der Fulda, Germany specializing in Hydro.

Wasserkraftwerk Haag is a family-owned hydroelectric power plant operating on the Fulda River in Rotenburg an der Fulda, Hesse, Germany. Originally constructed as the Herrenmühle (Lord's Mill) in 1612, it was converted to a hydropower facility between 1939 and 1943 by Eugen Haag. The plant operates three turbines (one original Francis turbine from 1898, plus modernized replacements from 1979 and 1984) with a combined peak capacity of approximately 320 kW. It generates around 1.8 million kWh annually, varying with Fulda River water levels between 70,000 and 230,000 kWh monthly. The facility includes modern fish passage infrastructure installed in 2009 to enable fish migration upstream, and an automated screen cleaning system. The plant operates as a family business (GbR) under Cornelia Haag-Lorenz and is open to public tours and hosts cultural events.