Mavericks has this new metric called Energy impact. You can see how much energy do apps use.
That seems a natural thing for iOS - I wonder why isn't it included yet? Is there something in mobile OS design that keeps this from happening?
Steve used to say that the user shouldn't be baffled by or need to use things like that. Plus, it makes more sense on a desktop.
(quote not accurate, out of context)
I'm willing to bet that the majority of consumers don't really care about having all this information.