About us


SET Sustainable Energy Technologies GmbH

We are experts in the development, manufacturing, and testing of electro-mechanical systems. We offer our customers excellent engineering service and customized test-lab development. Furthermore, we design highly efficient variable-speed differential systems for industrial and wind applications.

About us – Based in Klagenfurt (Austria), we are a globally operating technology company. We supply our international customers in the business fields of industry, energy, oil & gas, automotive and wind power with innovative drive and testing concepts.

Scope of Supply


  • Concept analysis and feasibility studies
  • Development of the entire drive train including all electronic and mechanical engineering requirements
  • Design of the non-standard motors and frequency converters to customer specifications (standard industrial components)
  • Design and development of Gearboxes
  • Realistic testing over a defined power range before integration
  • Installation and commissioning
  • Service and Training



SUCCESS STORY from 1986 to this day

Gerald Hehenberger, founder and CEO of SET GmbH, has consistently played a leading role in system development over the past 30 years. Right from the very beginning of the wind industry he has been among the pioneers in developing new technologies for drive Systems.

The evolutionary path started in the mid-eighties with the development of one of the first 600 kW variable-speed, pitch-controlled turbines, followed by doubly-fed induction-generator systems in the mid-nineties, and multi-megawatt offshore WECs in the early years of this century. With SETCON® for industry and DSgen-set® for wind energy, he has taken SET GmbH to a level that sets new standards in drive technology.


DI Gerald Hehenberger

Owner and founder of SET GmbH and GHP Holding GmbH



SET office building

Dating back to the Austro-Hungarian Empire with a great history and long set-palais-sterneck-logotradition, Palais Sterneck is home to SET GmbH. The majestic building with its neoclassical facade previously housed the Post Office’s Carinthian headquarters. Surrounded by scenic mountains and close to Lake Wörth, Palais Sterneck is situated right in the center of Klagenfurt, one of Austria’s most attractive cities.

This location was carefully renovated and refurbished from 2011 through 2013, taking the needs of preservation into consideration. In addition to office space on four levels totaling 5,000 sqm, large conference and meeting rooms, Palais Sterneck also has an underground car park with over 100 spaces.