The paper describes the first implementation of the Unified Citizen Engagement Approach (UCEA), a newly developed design-oriented framework for citizen engagement in the energy transition. The preliminary testing and evaluation of several of its pathways in Groningen, the Netherlands, show that the role of design in the energy transition is not limited to the adoption of (co)design tools and methods. Instead, design should be integrated in the process in a more holistic way and on multiple levels, taking into account broader issues than energy, the maturity of local initiatives, and effective communication with stakeholders.