Tobias Zwirner is the Managing Director of Phaesun GmbH, a sales, service and installation company of Off-Grid photovoltaic and wind power systems. Since the foundation in 2001 Phaesun is focusing on rural electrification, solar water pumping systems and the use of Off-Grid renewable energies for industrial applications. The main target regions are Africa, Latin America, Europe and the Middle East. Phaesun is closely working together with international NGOs and GOs as well as with local partner companies in the target countries with the aim to provide energy to non-electrified areas. Phaesun has a daughter company in Vendargues, France and holds subsidiaries in Eritrea and Panama.
From 1989 until 2001 Tobias Zwirner was working for Steca Elektronik GmbH, developing the department for electronics for Off-Grid PV applications and collecting first experiences with rural electrification projects in Mongolia, Eritrea, Sudan and Ethiopia.