Management

From left: Christian Riel, Martin Schlerka, Gerald Bartl and Martin Hornhuber

Christian Riel (CFO), managing partner:

• Accounting
• Human resources
• Purchasing
• Public relations, investor relations
• Legal
• Biogas OPO

Christian Riel is the CFO and has been managing Biogest since 1998. During this period he was also the head of accounting and investor relations in Austria and abroad for the owner of the Biogest brand at that time, a listed environmental engineering group.

Before, the Vienna Law School and Vienna University of Economics and Business graduate worked in Austria’s financial sector in investment banking for nine years.

Mr Riel is married and is a father of two children.

Martin Schlerka (CEO), managing partner:

• Sales, project development
• Project handling
• Strategy
• Marketing
• Research & development

Martin Schlerka, who joined Biogest in 1998, is the CEO. He has been managing the company since 1999. During this period he also held other roles in Austria and abroad for the owner of the Biogest brand at that time, a listed environmental engineering group.

After graduating in environmental engineering at Vienna University of Natural Resources and Applied Life Sciences, Mr Schlerka worked for several consulting engineering firms. He also qualified as a consulting engineer himself. 

Mr Schlerka is married and has three children.

Gerald Bartl (CTO), managing partner:

• Design engineering
• Quality management

Gerald Bartl-Fauler is Biogest’s CTO and has been managing the company since 2007. After joining Biogest in 1997, he was responsible for managing international biogas and wastewater projects.

Mr Bartl has a degree in environmental engineering from Vienna University of Natural Resources and Applied Life Sciences.

He is married and has one child.

Martin Hornhuber (COO), authorised signatory and partner:

• Production
• After sales service 

Martin Hornhuber is the company’s COO and has had full signing powers since 2007.

After joining Biogest in 2005, he was initially responsible for managing international biogas and wastewater projects.

Mr Hornhuber is married and has two children.