GP JOULE HYDROGEN serves the entire green hydrogen value chain. As a Key Account Manager, Patrick is responsible to link the different sectors of the value chain to hydrogen ecosystems. Patrick graduated in "International Business and Engineering" from the University of Applied Sciences Technikum Wien. Afterwards he worked several years in sales and business development at Linde, a leading global industrial gases and engineering company, until he joined GP JOULE HYDROGEN almost two years ago. His presentation at Intersolar 2023 entitled "Regional Hydrogen Ecosystems: Today`s Success and Future Perspective" gives a comprehensive overview of the current developments and successes in the implementation of regional hydrogen ecosystems. Both the current challenges and the promising future perspectives of these innovative energy infrastructures will be highlighted. Mr Topar will demonstrate how regional hydrogen ecosystems can help to drive decarbonisation and enable a sustainable energy transition. This includes both the production of green hydrogen through renewable energies and the development of effective storage and distribution systems.'