Get rid of power in fuel with some energy extracted (6)
I believe the answer is:
dispel
'get rid of' is the definition.
(I've seen this before)
'power in fuel with some energy extracted' is the wordplay.
I cannot really understand how this works, but
'power' could be 'pe' (P.E. is an example) and 'pe' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for dispel that I've seen before include "Get rid of" , "Disperse, dissipate" , "Cause to vanish" , "Dissipate or drive off" , "Clear, blow, away" .)