Deciding on different layouts

A layout I made experimenting with the positioning of my original idea. The selected device is highlighted. Also the amount of money saved is larger to show its importance. The headings are also much Smaller and it is easy to see which page is selected.

I decided to move on from my original layout and tried to simplify it a bit. In this concept I also played with the idea of how to show data. Each ball representing a different device, its size shows how much power it is using and the string it is hanging on shows how long that device has been used for. Although I like the simplified look of this concept, I didnt think that this way of showing energy use was easy to understand.

Another simple looking layout that lists the different devices being monitored and shows information about them. I also played with a 3d look.