Active on fuel cells since 1986. Manager of the ABB fuel cell development program. After ABB ended engagement in fuel cells (1991), free-lancing fuel cell consultant with clients in Switzerland, Germany, Netherlands, Austria, Spain, US, Japan, Italy, UK, Brazil and European Union. Founder (1994) and organizer (until 2010) of the European Fuel Cell Forum in Luzerne. Many issued (but expired) patents in the fuel cell ara. Active promotor of the energy transition (Energiewende) since 1972. Still engaged in issues involving critical assessment of hydrogen, energy efficiency of buildings, sustainable solutions for transport, overall energy balances etc. Organizer of over 20 international conferences on sustainable energy issues. Great-great grandson of Christian Friedrich Schoenbein, discoverer of the fuel cell effect.