VERBUND's power plant at St. Georgen is a run-of-river power plant situated on the river Mur and west of the town of St. Georgen ob Murau in Styria.
The power plant was built between 1983 and 1985. The two-field weir dams the water of the Mur, a Kaplan spiral turbine runs in the power house. The power plant generates around 31 GWh of electricity annually.
Owner: VERBUND Hydro Power GmbH
Operator: VERBUND Hydro Power GmbH
Commissioning: 1985
Type: Run-of-river power plant
Country: Austria
Region: Styria
Waters: Mur
Output: 06 MW
Annual output: 30,755 MWh
Turbine: Kaplan
Connectivity: Fish bypass is in the planning process
Turbines and generators: The power plant is driven by a Kaplan spiral turbine with five impeller blades and a diameter of 2.7 metres. At a nominal flow rate of 50 m³/sec., it achieves a nominal power output of 6,364 kW. The three-phase synchronous generator has a nominal output of 8,500 kVA.
Transformers: The 8,500 kVA machine transformer converts the generated energy from 3.5 kV to 30 kV, which is conducted along open-air lines to Kreischberg, Murau and the Bodendorf power plant. The power plant’s own requirements are met by a 160 kVA three-phase transformer. It connects the 400 V and the 30 kV voltage levels.
Weir system: The two-field weir system is equipped with welded pressure segment gates with weir flaps. Each weir field is 11.5 metres wide with a barrier height of 8.5 metres. The barriers are raised and lowered by an oil-hydraulic pull cylinder, the flap is operated and deployed by centrally arranged push cylinders.
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A fish bypass for the St. Georgen power plant is currently being planned.
The entire plant group of the Styrian hydropower plants has been awarded the environmental certificate ISO 14001. The power plants on the rivers Mur and Enns not only fulfil the statutory requirements but also focus on high environmental standards and technical innovations. The goal is the efficient use of hydropower and the balance between economy and ecology. The effectiveness and benefit of the environmental management system are mainly the responsibility of our employees, who undergo constant training and development in this area.
Wherever ecologically valuable and technically feasible, VERBUND has set itself the goal of guaranteeing the continuity of flow for domestic fish and aquatic life at the locations of its hydropower plants. By 2025, VERBUND will invest 280 million euros on the implementation of fish bypasses and other ecological structural measures.
