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As part of a planned succession plan, Holger Mennigmann will join the management board of IB Nordhorn GmbH & Co. KG Münster with effect from 1 April 2026.
Klaus Nordhorn, who has built up IB Nordhorn since its foundation in 1995 and developed it into one of Germany’s leading building services engineering firms, will continue to lead the company alongside Holger Mennigmann until his retirement in 2027. This dual leadership ensures continuity in day-to-day operations and creates the ideal conditions for a seamless handover of responsibility.
With his extensive technical expertise in the fields of energy, refrigeration, ventilation and heating, as well as his proven experience in establishing and scaling up planning and service businesses, Holger Mennigmann brings the ideal qualifications for the further development of IB Nordhorn. Furthermore, his extensive network in the energy and property sectors opens up new strategic growth prospects for the company.
Together with the branch managers in Berlin and Hamburg and the head office in Münster, Holger Mennigmann will continue to drive forward the successful growth of IB Nordhorn within the RWTÜV Group, of which IB Nordhorn has been a part since 2015. The aim is to expand the company’s market position as a quality-oriented building services engineering consultancy and to make targeted use of the synergy potential within the group.
“We are delighted to have secured Holger Mennigmann, an experienced and competent managing director for IB Nordhorn, to ensure we are best positioned to capitalise on growth opportunities in the field of building services engineering in the coming years,” said Dr Fabian Fechner, Managing Director of RWTÜV GmbH, commenting on the appointment.
About Holger Mennigmann
Holger Mennigmann has nearly 30 years of experience in energy and plant engineering. A graduate in electrical engineering, he began his career as a project manager for combined heat and power (CHP) plants at Motoren-Werke Mannheim AG. After holding positions at Stadtwerke Aachen AG, Enoplan Ingenieurgesellschaft, and Caterpillar Energy Solutions, he spent over 15 years at RheinEnergie AG in Cologne, assuming increasingly senior leadership roles, most recently as an authorized signatory for the Energy Services and District Heating division. At the same time, he served as managing director of AGO GmbH Energie + Anlagen in Kulmbach—a specialist in decentralized energy supply, ventilation, and air conditioning technology.
About IB Nordhorn
As a building services engineering firm with offices in Münster, Berlin, and Hamburg, IB Nordhorn has been planning and supervising heating, ventilation, refrigeration, plumbing, and electrical engineering projects for more than 30 years. With over 80 employees, IB Nordhorn manages complex projects both domestically and internationally, including the building services engineering for office buildings, commercial properties, residential complexes, and chalets. Planning is carried out at a technically sophisticated, future-oriented level. IB Nordhorn has been part of the RWTÜV Group since 2015.
About the RWTÜV Group
The RWTÜV Group, founded in 1872, is a consortium of renowned technology service providers with business divisions in insurance services, telecommunications, and energy & environment. The Group’s companies are present in over 32 countries across Europe, Asia, and Australia, employing approximately 2,200 people.