Tramp catches current inside, and energy (7)
I believe the answer is:
traipse
'tramp' is the definition.
(I've seen this in another clue)
'catches current inside and energy' is the wordplay.
I cannot really see how this works, but
'current' could be 'i' (physics symbol) and 'i' is located in the answer.
'catches' could be 'traps' (trapping is a kind of catching) and 'traps' is present in the leftover letters.
'energy' could be 'e' (physics symbol as in E=mc2) and 'e' is present in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for traipse that I've seen before include "make slow progress" , "Walk heavily" , "Tedious walk" , "Pirates (anag) -- walk without 9" , "Parties (anag.)" .)