There are many stakeholders involved when considering buildings’ energy flexibility. The stakeholders are the occupants/users in the buildings, the owners, energy cooperatives, the caretakers and ESCOs, but also aggregators, utility companies, consultants, manufacturers, local authorities and politicians. The understanding of the motivations and barriers for the different stakeholders is a key input for developing frame conditions of simulation models or innovative business models for the utilization of flexibility services from buildings and clusters of buildings. The viewpoint of the different stakeholders is also important when developing and designing technical solutions to make these adapted to the user needs. This webinar will mainly focus on how the stakeholders are involved in energy flexibility activities and what we can learn from this involvement. The webinar is organized by Subtask C within the IEA EBC Annex 82.