I want to thank you for making me aware of this. I had never thought of the ability to track me merely by energy usage. That one's "silent" enough to not even have crossed my mind and shy of wasting energy (and money) I don't see a way to "beat the system" here outside of getting off the grid.
I was a little surprised by it too. The new "smart" power meters that are starting to be installed by power companies deliver hourly power use data to the power company for a variety of reasons.