Wasserburg TW Run-of-River Plant

VERBUND's Inn power plant of Wasserburg was upgraded and optimised in 2009 through the installation of an additional turbine by E.O.N. Wasserkraft and has since been generating valuable clean electricity from Bavarian hydropower.

Wasserburg power unit was planned from 2008 until 2009 as a recent expansion of the Inn power plant, Wasserburg, built in 1935-38. The expanded capacity amounts to 5 MW. Generation in a normal year can be 42.9 GWh. Not only did the new power unit result in an increase in efficiency, but – during the course of the building measures – also a redesign of the underwater channel in collaboration with ecological construction supervision.

Following the planning phase executed by the Munich-based engineering firm, EDR, 2008 saw the start of works by construction company Max Bögl from Neumarkt on the placement of sheet pile walls to dewater the excavation pit on the right bank of the Inn. Following a construction period of just one year, the power unit was commissioned in summer 2009. 
Located in the powerhouse is a four-blade Kaplan PIT turbine from Andritz VA Tech Escher Wyss GmbH, measuring 3.65 m in diameter. It yields a capacity of 5 MW, which represents a 94.4 % degree of efficiency. It is coupled with a 5.55 MVA three-phase synchronous generator from Elin EBG, with a rated voltage of 6.3 kV. The total weight of the stator and pole rotor amounts to approx. 27 t, whilst that of the turbine rotor is 11 t. The machine hall is equipped with an underslung crane with trolley from Konecranes.

Technical data:

Owner: VERBUND Innkraftwerke GmbH
Operating company: VERBUND Innkraftwerke GmbH
Beginning of operation: 2009
Type:  Run-of-river
Country, State: Germany, Bavaria
Waters: Inn
Capacity: 5.0 MW
Annual generation: 42,900 MWh
Turbines: Kaplan 
Fish bypass: under construction