On 13 April 2021, in the framework of the SMARTEES project, the second policy scenario workshop, organised by RUG, ICLEI and K&I, took place. The workshop was addressed to local stakeholders from the cities of not only Groningen and Zurich (as in the first workshop), but also Budapest and Vienna. These stakeholders were asked to reflect on policy scenarios that would be interesting to simulate and incorporate into the Sandbox that will be created at the end of the project. The Sandbox is a tool that will allow to virtually reproduce different scenarios and see what their possible social effects might be. The workshop provided insights into the best strategies for overcoming (possible) citizen resistance and increasing social acceptability, as well as supporting energy innovations by involving citizens in the design of energy policies.