From May 2010 to March 2021, Johannes was CEO of E.ON SE, driving a landmark transformation, splitting the company into renewables- and infrastructure-led businesses, spinning off Uniper in 2016, and re-focusing E.ON on energy networks and retail to serve 50 million customers across Europe.

Earlier, he had risen through legal, financial, operational, and executive ranks across E.ON and its predecessors, including roles as CFO, COO, and Deputy CEO.

Beyond E.ON, he has chaired and shaped European energy governance bodies as President of Eurelectric (2013-2015) and European Vice-Chair of the World Energy Council (2006-2012). He was German Honorary Consul General until 2020. His non-executive experience also includes board tenures at Deutsche Bank (2008-2018) and Salzgitter AG (2006-2016).

He brings deep cross-sector expertise in:

• Utility transformation & capital structuring – executing spin-offs, ESG-aligned reinvention, and multi-jurisdictional network governance

• Board-level energy & infrastructure strategy – steering listed firms through regulatory and transition complexity

• Global energy policy & industry organisation leadership – guiding EU and international energy

• Governance, sustainability & cultural integration – embedding rigorous stewardship and purpose within multinational institutions

Johannes holds a PhD in law from the University of Göttingen. Known for blending legal discipline, strategic vision, and energy-market foresight, he is widely respected for guiding legacy utilities through profound transformation, capital transition, and global board governance.