We recently took delivery of an Energy Informatics portable lab donated by E3 GreenTech to the Energy Informatics group at University of Georgia for teaching and research.
You can remove the electrical outlets and place them around a home, say, and plug devices into them. Each outlet sends a data stream of power, temperature, and occupancy every few secs to the router and hence to a server. A rules engine at the server end processes the data and takes action (e.g., turn off a device, raise the thermostat). The beauty of the kit is that it can be used by students in a variety of settings to learn about creating and processing data streams to reduce energy consumption.
We will develop some exercises for students to undertake as part of a course on Energy Informatics.