Els van der Roest is active as an Energy and Water researcher in the Industry, Wastewater and Reuse team. While working on her Master’s at Utrecht University she built up considerable knowledge in the field of energy. This included for instance a project on the elaboration of a system for converting toilet paper in wastewater treatment into electricity. Els’s interests focus on the interface between energy and water because these two areas are becoming increasingly interdependent as society transitions to sustainable energy. Through her participation in projects related to the hydrogen economy, Els draws on her knowledge to promote this energy transition.