Energy impact from terminal
Top will do it. However, this is not documented in the man page.

Example:


  top -stats pid,command,power -o power -l 0


And of course you can grep the process of your choice



You can also use the powermetrics command to get some general info.

See documentation via man or here

A nice example can be found here


  powermetrics -i 1000 --poweravg 1 | grep 'Average cumulatively decayed power score' -A 20