Peer-to-peer technology has the potential to achieve scalability, fault-tolerance and robustness in a cost-efficient way. These properties are not only of interest for Internet applications, but benefits can also be realized in industrial applications. In this short article we discuss the use of P2P networks for the control of microgrids, small islanded parts in electrical power systems. Although deployment of P2P seems far from now, the importance of open networks for the control and supervision of critical infrastructure will increase.