Yes, exactly. Thanks for elaborating! Now I wouldn't mind having the total spent energy available (because I just like having metrics), but currently it wouldn't stand to much use. The power economy in the game is currently based mostly on the availability of power at a given moment rather than the availability of energy per se.
On the same streak, for some reason the production of items have a power requirement expressed in MW, which doesn't really make much sense either since it's just the same as the nominal power of whichever machine you use to build it: it's not a very useful metric. In this case, expressing the requirement in MWh would make sense, but it would probably still require changes to the game logic to actually be useful.
I'll leave the actual game mechanics to be decided by the studio, but I still wish the unit labels on metrics would be correct to avoid confusion.