The managing directors of AGO GmbH Energie + Anlagen

Günther Hein


(born in 1965) joined the executive board of AGO AG Energie + Anlagen in September 2011 and became spokesman of the board in 2013. Among other duties, he is responsible for the technology and distribution divisions. In September 2012, Günther Hein joined the regional board of directors of the Bavarian Association of Metal and Electrical Industries.


From 2009 to 2011, he worked as a managing director in the company KKT Kraus Klima u. Kältetechnik GmbH, located in Lauf on river Pegnitz, and reorganised the company during this period. Nine years earlier he joined Hyfra Industriekühlanlagen GmbH in Neuwied and worked there as a distribution manager and as a member of the excecutive board until 2009.


From 1991 to 2001 he was managing director of the company Atlatek Kältetechnik, located in Swakopmund in his native country Namibia.


Here you find images of our management team in printable resolution.

Georg-Stephan Wilkening


(born in 1975) joined the board of directors of AGO AG Energie + Anlagen in May 2013 and is responsible for the finance, controlling and human resources divisions. He worked as a management consultant for Pricewaterhouse Coopers and IBM Global Business Services from 2001 to 2008, where he was responsible for project and program management and the optimisation of processes and strategies. Between 2009 and 2013, he held various management positions in company re-organisation and re-structuring projects with the solar equipment manufacturer Roth & Rau and other companies.

Holger Mennigmann


(born 1971) has been Managing Director of AGO GmbH Energie + Anlagen since July 2020 and is responsible for the cooperation between RheinEnergie AG and the subsidiary AGO GmbH.


After studying electrical engineering, Mr. Mennigmann successfully worked in various positions as a project manager and sales engineer for decentralized energy generation systems (CHP systems), before he first took over the management of a planning department at RheinEnergie AG and then head of the energy services division since 2014. In addition to studies on energy efficiency, holistic energy supply solutions for industry and neighborhoods are also implemented and operated.