Advisory/professional activities - general
- Consultant to Royal Dutch Shell (1999 - 2021)
- Member of the Technology Advisory Council of BP (2012 - 2018)
- Consultant to Avantium (2012-2021)
Activities for the general public
- Lecturing on energy, CO2, and climate change
- Bible learning and teaching in churches and organisations
- Lecturing on e.g. science and faith, climate change and Christianity; a.o. IFES, Passion weeks; Ichtus, Navigators, VGSU