Energy impact from terminal
Solution 1:
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