Find different plugs to heat generating station (4,4)
I believe the answer is:
wind farm
'generating station' is the definition.
(wind farms generate energy)
'find different plugs to heat' is the wordplay.
'different' indicates an anagram.
'plugs' indicates putting letters inside (plug can mean to fill a gap).
'to heat' becomes 'warm' (to warm something up is to heat it).
'find' with letters rearranged gives 'indf'.
'indf' going into 'warm' is 'WIND FARM'.
(Other definitions for wind farm that I've seen before include "Generating station" , "this should give you plenty of energy" , "Group of aerial rotors generating electricity" , "generator" , "energy producer" .)