Wishes to offload power tools (4)
I believe the answer is:
hoes
'tools' is the definition.
(hoe is a kind of tool)
'wishes to offload power' is the wordplay.
'wishes' becomes 'hopes' (hoping is a kind of wishing).
'to offload' indicates named letters should be taken away.
'power' becomes 'p' (symbol in physics).
'hopes' with 'p' taken out is 'HOES'.
(Other definitions for hoes that I've seen before include "Garden tools" , "Gardening tools" .)