Run-of-river power plant St. Pantaleon

The VERBUND power plant St. Pantaleon is a run-of-river power plant on the Enns and situated to the east of the town of Enns in Upper Austria.

The St. Pantaleon power plant was built between 1960 and 1965. In 1976/77, the machines were automated and the remote control of the entire plant moved to Mühlrading. Two Kaplan turbines generate around 262 GWh of electricity annually.
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Owner Ennskraftwerke AG
Operator Ennskraftwerke AG
Commissioning 1965
Type Run-of-river power plant
Country Austria
Region Lower Austria
Waters Enns
Output 51 MW
Annual output 239,000 MWh
Turbine Kaplan, Francis
Connectivity Fish bypass
Environmental protection at VERBUND

Ecology & environmental protection

The St. Pantaleon run-of-river power plant is not equipped with a fish bypass and one is not being planned as this would not deliver any ecological added value. The continuity of flow is guaranteed by the tributary of the Enns, from the section at the Thurnsdorf run-of-river power plant, which is equipped with a fish bypass, to the confluence of the Enns with the Danube.

A feasibility study of ecological measures (German only) on the Enns was carried out in 2017 by the University of Natural Resources and Life Sciences Vienna (commissioned by: Office of the Provincial Government of Upper Austria, Office of the Provincial Government of Styria, Ennskraftwerke AG and VERBUND Hydro Power GmbH).
Responsible treatment of the environment
Turbines and generators: The powerhouse accommodates two vertically mounted Kaplan turbines with an expansion output of 27,287 kW each and a flow rate of 145 m³/sec. Immediately above these are two directly coupled generators of different designs: One is a 32,000 kVA single-phase alternator (traction current) with a nominal frequency of 16 2/3 Hz, the other a 31,400 kVA three-phase synchronous generator with the VERBUND standard frequency of 50 Hz.

Transformers: A 32,000 kVA single-phase transformer is available for raising the single-phase current from 8.6 kV to 120 kV. The generated energy is conducted via a loop to an ÖBB line on the west site of the structure. The three-phase current is raised from 6.3 kV to 110 kV by a 31,400 kVA transformer. Switchgear of Energie AG located to the east of the power plant feeds the generated energy into the Upper Austrian regional grid. The power plant’s own requirements are ensured by a 500 kVA, which lowers the energy generated in the Thurnsdorf weir power plant from 20 kV to 0.4 kV. Since the year 2000, the power plants on the Enns have been controlled from the control room in Steyr.