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HZI logo

Hitachi Zosen Inova (HZI)

HZI is a global greentech company operating in Waste to Energy (WtE) and Renewable Gas. Our roots are in Switzerland, where we were established in 1933 as “L. von Roll Aktiengesellschaft”, later known as Von Roll Inova. Since 2010 we have been part of the Hitachi Zosen Corporation, one of Japan’s largest industrial and engineering firms and a longstanding partner and licensee of Von Roll Inova. To this day we foster the spirit of a traditional Swiss company combined with the know-how and economic strength of an international group.

BioGasclean logo


BioGasclean is a Danish limited liability company specialized in biological desulfurization and methanation of biogas. We develop, manufacture and supply fully automated gas cleaning systems for H2S removal without the use of chemicals combining low operating costs with high availability.


Institute of Chemical Technology Prague (ICT Prague), Department of Water Technology and Environmental Engineering

Collaboration with ICT Prague is an important part of our work for independent assessment of technical standards and laboratory procedures.

Logo EBA

European Biogas Association

In the European Biogas Association (EBA) we participate and collaborate in preparation of expert reports and studies. This work is focused mainly on the preparation of EU legislation.

The Chief Executive Officer of NovaEnergo, Dr. Jan Stambasky, was elected as a member of the Board of Directors of EBA for several terms in the period of 2009-2014. In 2014 Dr. Jan Stambasky has been appointed to the position of EBA president (2014-2019).

R2Gas Logo

Research Centre for Renewable Gases

Research Centre for Renewable Gases (R2Gas) was founded in July 2019 as a non-profit association based in Vienna (Austria). It focuses on cutting-edge research activity, which converts into a range of services, providing private and governmental sector with studies, technologies, and consultancy.

CEO of NovaEnergo, Ing. Jan Štambaský, Ph.D. is Vice President of R2Gas (since 2019).

Biogas News
New product: Axiase 100

New enzyme product, Axiase 100 is now available for customers in the Czech and Slovak Republic.

Activated Carbon

Activated carbon for biogas desulphurization.

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150 00 Praha 5

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