Alexander Voigt is a physicist and both a solar and energy storage pioneer. As founder, CEO and supervisory board member of a number of national and international companies, he has been working on a competitive CO2-free energy supply for 30 years. In 2015 he founded Lumenion GmbH, of which he was the managing director until 2020. In 2021 he founded the hydrogen company HH2E and is managing director there.

From 2012 to 2019 Alexander Voigt was a member of the supervisory board of Greenpeace. Since 2020 he is a member of the advisory board of IKEM.