Is it normal to calculate how much money you spent running the AC today?
Is it normal to calculate how much money you spent running the AC today?
Not typical but not a bad idea if you're broke and trying to save enough on the energy bill to afford instant ramen next week.
As for annoying I'm guessing the annoying part is talking about it or asking people to change habits. You could also put in work to improve rates passively. Like improving the insulation of the home or filling gaps around windows. Note: Don't do noisy diy projects in the same room as your wife or leave a mess.