AbstractSocial scientists study many different types of networks, from policy networks to sociotechnical networks, in order to better understand processes of change. These diverse networks have a number of characteristics in common, including interconnectedness, flows, and fragility. Exploring these characteristics in relation to smart grids helps us to better understand the social nature of energy sector innovation. In this chapter, I use these themes and concepts to assess three examples: international smart grid policy networks; a local community network on Bruny Island, Australia; and a fragile network, the digital metering programme in the State of Victoria, Australia.