Prof. Alexander Wokaun

«Petroleum is a valuable primary energy carrier. Its conventional and unconventional reserves are limited. If it is used CO2 is emitted which affects the climate negatively. For these two reasons, industries, research and society in general have to work with the greatest possible effort to achieve the transition from fossil fuels to CO2-free energy sources. We should only use petroleum in areas where we do not yet have alternatives such as in long distance flights and the transport of heavy goods. We should support individual mobility by promoting the development of lighter, safer and more efficient vehicles which would use less than the equivalent of 3 litres of fuel for 100 km. Hybrid vehicles which are recharged with renewable energy and at the same time use a small combustion motor to maximise their reach are already available today. In the future, hydrogen will be used as fuel. Hydrogen will store the fluctuating supply of energy gained from wind and photovoltaic. The hydrogen is stored in the car and converted into electricity in a fuel cell. The energy consumption is thus reduced, as the electric motor has a significantly higher degree of efficiency than the combustion engine.»

Prof. Alexander Wokaun, Paul Scherrer Institute, Villigen, Switzerland