The initiative will develop methods and models for how public events can accelerate the climate transition in cities. The project brings together Sweden's largest live music festivals, Swedish sports and destinations for joint action with researchers. Since time immemorial, events have brought people together and sparked popular engagement. Producing and staging events requires energy, materials, water, food, waste management, areas that, like the travel and transportation of audiences and performers, have a significant climate impact. The number of events is increasing, while interest in events as a force for change for greater sustainability is growing. Important dimensions are changing behaviors and attitudes towards consumption and citizen engagement.