DEFT is a collaboration between DETERLab, the University of Illinois, and the Pacific Northwest National Laboratory (PNNL) that is bringing large scale experimentation techniques to bear on problems in critical infrastructure. In particular DEFT is exploring networking of power systems. Using the DETER federation architecture, members of the collaboration have been able to interconnect data streams from local power facilities at UIUC and PNNL to each other and central systems at DETERLab. The result is a collaborative l