supply with power (9)
'supply with power?' is the definition.
(to enable is to give someone means or power)
This is the entire clue.
(Other definitions for enable that I've seen before include "Give power or capacity to" , "Capacitate" , "Make possible using baleen" , "Authorise" , "Make it possible for someone to do something" .)
(Other definitions for electrify that I've seen before include "Charge - excite greatly" , "Excite intensely" , "Galvanise - animate" , "Supply power to; shock, thrill" , "Charge with power" .)