Google has now been rumoured to keep tabs on their energy use and adjust accordingly. As part of a project reportedly dubbed EnergySense, the hardware itself seems to be created by a third party such as Ecobee. Ecobee he said that Google isn't working with them but it is still possible that the company could still be using their hardware.
It is believed that Googles goal is to toy with making the energy grid more efficient and build applications and services with the data it collects. Non-employees are apparently being enlisted as “Trusted Testers” to give the service a whirl in St. Louis, Missouri and potentially other areas.