My grandparents paid attention to how much electricity they were consuming with classic electricity meters (and careful study of their electric utility bills).

My grandparents paid attention to how much electricity they were consuming with classic electricity meters (and careful study of their electric utility bills). The information in kWh already exists and is at the fingertips of almost every electricity consumer, there's just currently not a lot of incentive to study it (given low energy costs). The information is even getting richer as meter technology has improved since the big classic mechanical meters of my grandparents' generation and energy companies are often more than happy to provide as much information as the collect if you ask for it.