New interfaces to the energy system can facilitate changes of habits and provide means to control the household’s use of energy. In this paper, we look at energy use and such interfaces in the home from a socio- technical perspective. We describe how interviews and user observations can be used in combination with the theory of domestication to inform and inspire the design of interfaces to the energy system. As a result of our approach, we present the Energy AWARE Clock, an example of a new type of electricity meter that challenges the norm of how the electricity system is typically represented in the home. The Energy AWARE Clock makes use of a clock metaphor to visualise electricity-use in relation to time in everyday life. Energy-awareness products always challenge domestic social patterns and it is important to consider these aspects in the design process to find successful solutions for the future.