The Koninklijke Oosterhof Holman Groep.

The Koninklijke Oosterhof Holman Groep has been in existence since 1912. What started as a road building company has now developed into a diverse contracting company in various branches of the civil industry in the north of the Netherlands. Since 2003, the company has been involved in the realisation of biogas projects.
The retrofit of the biogas installation will be performed in Leeuwarden under the leadership of Oosterhof Holman Bio Energie, thereby breathing new life into the biogas industry in the Netherlands.