Reply to comment

Insteon doesn't support hardwired or ethernet connections. It only communicates on either wireless or X10.

The power consumption of Insteon wireless is really negligible though. The practical range of the transmitter is so low that you would almost need to be in the same room with the switch to intercept a signal from it.

That said, there isn't much in terms of third-party development APIs and hardware for Insteon yet. So you're pretty much married to an M$ software control platform.