There is no single answer to the question of how people should live nor any silver bullet to solve current ecological problems - and yet, we must seek new ways to think and act in light of emerging environmental challenges. Given the power of design to influence consumer and societal values, its role must be questioned and renewed in relation to current problematics of mass-production and (over)consumption. Switch! develops design artifacts and methods to influence perceptions and values around energy use in everyday life. Within the collaborative design research program, a conceptual and practical inquiry focused on critical interventions into sustainable design discourse.