PI Mitterfellner

Small hydro power station Tiefenbach

Construction of a diversion plant at Tiefenbach river in the municipality of Mühlen in Murau district.

Die Agrargemeinschaft Weite Alm GmbH planned the construction of a new small hydro power station on the Tiefenbach river in the district of Mühlen. PI Mitterfellner was commissioned with the completion of a feasibility study including profitability calculation and planning applications to waterway, environment and energy authorities.

PI Mitterfellner was further responsible for drawing up the construction and detailed plan, for local building supervision and for overall management of the planning and construction phase.

The plant was successfully taken into operation in July 2015. Small hydro power plant Tiefenbach is a diversion plant with residual water section and consists of a water intake, a penstock and a power house. The water intake was executed in the form of a fixed weir with a streambed intake with screen, bottom outlet and downstream underground sedimentation basin. On the orthographic left bank of the Tiefenbach river, a fish migration facility in the form of an environment-friendly fish ladder was situated. The penstock, made partly from glass fibre reinforced plastic pipes with a nominal diameter of 400 mm and partly from ductile cast pipework with a nominal diameter of 400 or 300 mm, overcomes a height difference of 292 m at an overall length of 2,768 m. The power house was built in reinforced concrete on the orographic right bank of Hörbach river.

With a machine unit consisting of a two-jet Pelton wheel and an air-cooled synchronous generator, the plant generates clean electricity for about 450 households, which is fed mainly into the public grid of regional utility Marktgemeinde Neumarkt Versorgungsbetriebsges.m.b.H.

Small hydro power plant Tiefenbach in the district of Mühlen thus pays a significant contribution to the generation of clean electricity, helping prevent about 55,755 tonnes of CO2 by the year 2050.

Client and operator:
Agrargemeinschaft Weite Alm GmbH

Service period:
2011 – 2016

Leaflet (German language):
KW Tiefenbach