--- title: 'Jaberg & Partner Unternehmensberatung: ☛ Hydraulic development for the Stegenwald hydropower plant' url: 'https://www.jabergundpartner.com/en/news/news-and-activities/hydropower-plant-stegenwald/' description: 'From draft design studies to turbine development: our hydraulic concepts optimise efficiency, space requirements and operational safety in Stegenwald.' image: 'https://www.jabergundpartner.com/fileadmin/user_upload/jabergundpartner/website_ueber_uns/jup_aktuelles_pix.jpg' date: '2025-10-07' modified: '2025-10-07' lastUpdated: '2025-10-07' --- # Jaberg & Partner Unternehmensberatung: ☛ Hydraulic development for the Stegenwald hydropower plant [![](https://www.jabergundpartner.com/fileadmin/images/2024/JuP-logo-transparent.png)![](https://www.jabergundpartner.com/fileadmin/images/2024/JuP-logo-filled.png)](https://www.jabergundpartner.com/en/ "Prof. Dr. Jaberg & Partner GmbH") ![](https://www.jabergundpartner.com/fileadmin/_processed_/1/c/csm_jup_aktuelles_pix_1babb6c0e4.webp) - [DE](https://www.jabergundpartner.com/de/news/aktivitaeten/salzachkraftwerk-stegenwald/ "Deutsch") - [](https://www.jabergundpartner.com/en/about-us/contact-us/) - [](tel:+49624122575) - [](https://www.jabergundpartner.com/en/about-us/contact-us/location/) [![](https://www.jabergundpartner.com/fileadmin/images/2024/JuP-logo-transparent.png)](https://www.jabergundpartner.com/en/ "Prof. Dr. Jaberg & Partner GmbH") - [ Tel:: +43 (0) 316 393188 ](tel:+43316393188) - [Enquiry](https://www.jabergundpartner.com/en/about-us/contact-us/) - [DE](https://www.jabergundpartner.com/de/news/aktivitaeten/salzachkraftwerk-stegenwald/ "Deutsch") Hydropower Plant Stegenwald =========================== Draft design of the machine concept and hydraulic development ------------------------------------------------------------- The Stegenwald hydropower plant (Salzburg, Austria) went into operation in September 2025 and is setting new standards in hydropower with its innovative technology. **We are delighted to have supported the project by assisting with the draft design of the machine concept and the subsequent hydraulic development of the turbines.** ### From draft design of the machine concept to turbine concept In order to reduce the overall width of the power plant, the idea arose to rotate a classic vertical Kaplan turbine with a concrete semi-spiral concrete housing 90 degrees horizontally and replace the elbow-type draft tube with a straight draft tube. To save on construction depth, an unconventional spiral was designed based on the model of a pump intake sump. [![](https://www.jabergundpartner.com/fileadmin/_processed_/2/b/csm_design_principle_51da6e5e11.webp)](https://www.jabergundpartner.com/fileadmin/_processed_/2/b/csm_design_principle_9135ce31f9.webp)Design principle of the vertical axis Kaplan turbine [![](https://www.jabergundpartner.com/fileadmin/_processed_/a/7/csm_stegenwald_spiral_modification_15d24391b0.webp)](https://www.jabergundpartner.com/fileadmin/_processed_/a/7/csm_stegenwald_spiral_modification_ad08b1c45a.webp)Modification of the spiral in several steps ### Optimised space requirements and environmental protection The Stegenwald hydropower plant project has resulted in a modern facility that combines maximum efficiency with optimised space requirements. An innovative machine concept and extensive investments in environmental protection underline the forward-looking nature of the project. Using state-of-the-art numerical methods, a hydraulic concept was developed that not only exceeds all requirements but also guarantees additional safety for long-term operation. Find out more interesting details about our draft design of the machine concept and hydraulic development here. 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