The idea is great and will certainly work. But what I do not like is that Google knows everyting about you at the end. What do you search, read, where do you live, your work, where you go on vacation, who do you call, send mail, and now also where you are at the present time.
There are plenty of options for viewing and mapping your energy. Without the intervention of your energy supplier our Google.
Why not improve your entire view of consumption such as gas, water and electricity.
Without the interference of Google and energy companies using the information for their own purpose.
Soon, Google becomes the energy supplier?