Present requiring electricity? (7)
I believe the answer is:
current
This clue is a double definition.
'present' is the first definition.
(similar in meaning)
'electricity?' is the second definition.
(current electricity is a kind of electricity)
'requiring' acts as a link.
(Other definitions for current that I've seen before include "Up-to-date" , "Source of power" , "In vogue" , "Contemporary" , "Electrical flow" .)