Altenmarkt Run-of-River Power Plant

VERBUND's Altenmarkt power plant is a run-of-river power plant situated on the Enns River and located in the municipality of Altenmarkt near St. Gallen in Styria.

* Quelle: ENTSO-E Erzeugung 2017

The run-of-river power plant was built between 1958 and 1960. In 1978, the power plant was automated and the control room converted to remote control. In 1999, the turbines and generators were replaced, a building for the emergency power generator built and the control room converted. Nowadays, the power plant generates 150 GWh of environmentally friendly electricity from 100% hydropower, with which it can supply almost 36,000 households.

Turbines and generators: A vertically installed, six-blade Kaplan turbine in a sheet metal spiral achieves a nominal output of 25,700 kW at a nominal flow rate of 140 m³/sec. and a head of 20.5 metres. The directly coupled 30,000 kVA three-phase synchronous generator has a nominal voltage of 10.5 kV.

Transformers: The generated energy is raised from 10.5 kV to 110 kV by a 30,000 kVA machine transformer in the main power plant. The electricity is discharge via a 110 kV line to the Eßling substation of STEWEAG-STEG-GesmbH (SSG).