Research, education and consultancy activities are mainly in the field of Energy and Environmental Sciences, including human induced Climate Change.
He has been promotor of nearly fourty PhD students.
He is author or co-author of several hundreds of publications (H-factor = 58) on energy systems analysis, energy policy, energy and sustainable development, climate change and CO2-emission reduction, energy efficiency improvement, renewable energy technologies (solar-PV, wind and biomass energy), CO2 Capture and Storage (CCS), nuclear energy, storage of energy, energy technology assessment, and environmental risk management.
An overview of his peer reviewed publications can be found at:
http://scholar.google.com/citations?user=YzGx36sAAAAJ&hl=en&cstart=40&pagesize=20