The purpose of this paper is to investigate the dynamics of networked power in a concentrated business network. Power is a long standing theme in inter-organisational research, yet there is a paucity of studies about how power emerges and is constructed over time at the network level. The paper adopts process, systems and network theory to interpret a rich single case study from the food industry. Three power mechanisms are identified, gatekeeping, decoupling and resource allocation, which form the basis of a model of networked power dynamics. Empirically tracing the dynamics of networked power highlights the economic contents of interactions. The paper extends current understandings of power as 'conflict and