Photo of Sofia Dahlgren

Sofia Dahlgren

Associate Professor

My research is about the use of biogas in Sweden, especially focusing on transportation (buses, trucks and marine shipping) and manufacturing industries.

The role of biogas in the Swedish transition towards renewable energy

We need a transition towards an energy system based on more renewable energy. There is no renewable fuel that at the moment can, alone, replace all the fossil fuels that are used today, and there will need to be a system of several fuels working together in order to achieve large-scale change. Based on current discussion on electric vehicles and electrification, a major role will be played by electricity. However, there are still occurrences when substituting to electricity is not optimal and when other renewable fuels might be better suited. One of these renewable fuels is biogas, which, apart from being produced from waste, have several other benefits for society – such as hygenization of waste and production of fertilizers. Biogas is not a solution that will work as a major substitution for all fossil fuels, but rather as a complement to other renewable energy technologies in areas where it might be better suited than other technologies.


My research is about on what role biogas may have in a renewable energy system. More specifically, my research studies questions like how one can evaluate whether biogas is suitable in a specific context, what determines if it is more or less easy to introduce biogas and what areas in a renewable energy system that might be suitable for biogas use. The focus is on Sweden and especially on different kind of transportation (buses, trucks and ships) as well as manufacturing industries.



I teach in courses related to environmental engineering (TKMJ24), sustainable development and entrepreneurship (TKMJ51), and sustainable city development (TKMJ48), as well as supervise bachelor and master student theses.