PI Mitterfellner

Small hydro power station Greith

Revitalisation of a diversion plant at rivers Ötzbach and Brücklerbach in the municipality of Turnau in the district of Bruck-Mürzzuschlag.

Utility company Greither Wasserkraftwerk GmbH planned the revitalisation of a small hydro power plant at rivers Ötzbach and Brücklerbach. PI Mitterfellner was commissioned with the overall planning, consisting of submission, overall execution and detailed planning, tender submission for all disciplines and funding applications. PI Mitterfellner was further responsible for local building supervision and overall management of the planning and construction phase as well as the approval process.

This small hydro power station has been designed as a diversion plant. Two catchments at the same bed height and with an uncontrolled weir with coanda screen and subsequent stilling basin. The penstock, made from glass fibre reinforced plastic with two different nominal diameters (400 mm and 500 mm) overcomes a height difference of about 163 m at an overall length of about 4,100 m. The power house was built in wood and reinforced concrete on the orographic right bank of Brücklerbach river.  With a three-jet Pelton wheel and an air-cooled synchronous generator, the plant generates clean electricity for about 350 households, which is fed mainly into the public grid of utility Energie Steiermark.  

Client and operator:
Greither Wasserkraftwerk GmbH

Service period:
2013 – 2015

Koerbler